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Rio Grande Mexican Restaurant

3.3 (692 reviews)
ModerateMexican, Tex-Mex
Closed • 11:00 am - 9:00 pm
Updated 2 weeks ago

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Rio Grande Mexican Restaurant Photos

RIO GRANDE MEXICAN RESTAURANT ATMOSPHERE

What's the vibe?
Casual
Loud
Happy hour specials
Good for groups

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Recommended Reviews - Rio Grande Mexican Restaurant

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Tortilla soup
Justin M.

Based upon the other reviews I had low expectation, but I was pleasantly surprised. I am always looking for a good chili relleno, this one didn't disappoint. Fresh, hot, crisp, and flavorful. The tortilla soup was fantastic. They have a great verity of Margaritas and the atmosphere is open and with a modern Mexican restaurant vibe. The service was a bit off, maybe that contributes to their lower overall average review. They are pretty busy and prob rely on CU for a lot of their staff, so have a bit of patience and you may enjoy a decent meal.

Quesabirria quesadilla.  Very good!
Nick V.

Love this place, especially sitting on the rooftop. Had the quesabirria quesadillas last time and they were delicious.

Grilled Chicken Fajitas for 1
Jami B.

This place was packed on a Friday night by 5:30, so I was happy we had reservations. It's a big place and pretty loud inside, but I can see why it draws the crowds with great chips and salsa, picture perfect guacamole, and solid standard dishes like enchiladas, fajitas, and tacos. I don't think you could go wrong with anything on the menu. Also, the skinny margarita was really tasty! There was easy and free parking in the ramp across the street, and after dinner we walked a block over for a scoop of gelato and had fun wandering into the fun shops and bookstores in the neighborhood.

Skirt Steak Fajitas with Rice and Black Beans
Jeremy S.

Food was delicious, steak was tender veggies had just the right crisp to them. The Chili Con Queso wasn't anything special, wouldn't waste my money on it. However we really enjoyed the chips and fresh salsa. My wife ordered a frozen house margarita and it was not very good, horrible tequila. It's a neat place with outdoor seat along the road and also seating on the rooftop, rooftop seating was closed for a party which was a bummer. Our waitress was extremely busy so the service wasn't all that great.

Fish Tacos
Cathrine S.

Returned to Rio Grande a few years later and was disappointed in the quality of the food and slow service. We stopped in on a Saturday early afternoon, service was noticeably slow (I feel bad because they must have been short staffed) but we waited an especially long time to be waited on, checked in on, and served. It took away from our experience overall. The food was also lacking in flavor, it was not how we remember from our last visit. This is a huge restaurant, with a big bar area, two-story dining rooms as well as a rooftop seating area. I imagine it gets very busy during the summer, or for special events. We may have just been dining during a downtime.

Guacamole and Strawberry Margarita Mocktail
Lauren D.

Visited Rio Grande on a quick stop in Boulder to meet friends in town for the game. The rooftop seemed busy and inviting, so we put our name in for a 4 top. We grabbed a seat at the bar to grab a quick drink while we waited and were not even looked at in the few minutes we sat waiting. Luckily enough, our table was ready quickly and we went upstairs to be seated. The service was okay, as expected for a busy restaurant on gameday. The drinks were decent (and had mocktail options that were superb!), ordered a Strawberry Margarita Mocktail, Frozen Mango Margarita, a few different beers, and some High Noons. The mocktail was fantastic, and the mango Margarita was pretty basic. We ordered the Guacamole, Rice and Beans, and a Steak Quesadilla. Guac was pretty basic with no seasoning, but chips and salsa were good (not enough chips to finish the huge plate of guac so it was a waste), Rice and Beans were pretty good, and the Quesadilla was like eating gummy cold cheese with a few pieces of Steak. Mentioned the Quesadilla to the waiter and he said "well that's what a quesadilla is like". Would recommend for drinks and starters, but not for the rest of the menu.

Watermelon Margarita
Tiyenne G.

Tonight's dinner was another one for the books! Came to Rio Grande because it was recommended by the locals and it didn't disappoint. Started with a watermelon margarita, which was on their Specials menu. For food, I had the shrimp empanadas and they were soooo good. Our server recommended them. For dinner, I had the crab and shrimp enchiladas and it was a great meal. It was the perfect setting for our group. Can't wait to go back!

Bar
Kristi M.

Sadly having to update this review - overall the experience wasn't great. The service was subpar, the food was mediocre at best, and I'm not feeling so well post meal. The tacos were awful, the tortillas were wet and soggy? It was very bizarre. The steak was gray, the shrimp were chewy. The rice wasn't flavorful. Majority of my food was left on the plate. I don't see us coming back anytime soon. It was nothing like our first experience here.

Tortillas
Susan G.

Service: sweet and attentive. Accommodating and friendly. (We sat at the bar) Ambiance: excellent bar seating and fantastic bar stools. Music is solid and the patronage is great (lots of locals) Food: my husband and I always split the chicken and veggies fajitas and it doesn't disappoint. I would love to see humanely raised beef/poultry and milk products here (like Snooze)-- so that is why I have only four stars

Steak Fajitas
John H.

Putting aside for a moment that everyone knows "The Rio" has the best darn old-school margaritas in Colorado, it seems all my local peeps think the food is a second-class citizen to those yummy margs. I'm here to definitively say the Grilled Steak Fajitas are the absolutely unequivocal best steak fajitas I have ever tasted in my life! Oh yeah, I said it... and it just so happens to be true. First off, there are no gimmicks here. The plate does not come out sizzling to wow guests with its fresh-off-the-grill theatrics, but incredible fajita ingredients you shall certainly have. The marinated skirt steak is always cooked perfectly with a beautiful char on the outside and juicy on the inside. The meat is so delicious all by its lonesome, I generally eat the second half of my steak with none of the fajitas fixings like it's a premium chop at Peter Lugers in NYC. It comes with a vibrant medley of grilled onions, green & red peppers, simple Mexican rice and black beans, plus wonderfully detailed additions like fresh house-made flour tortillas & guacamole make the dish. I also love the perfectly thin chips & house-made salsa. So if you're near one of the various Rio locations in Colorado, come for the margaritas, but stay for the fajitas!

Food swept but not cleaned up. Dirty floor.

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3 months ago

It's always a fun time at Rio's with great food, good vibe, and excellent margs! This is my go-to Mexican restaurant!

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6 months ago

Litteraly worst restaurant experience I've ever had. Do better. Food was exetremly average, service was horrible, and rude staff.

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Rio Grande Mexican Restaurant Reviews in Other Languages

Ask the Community - Rio Grande Mexican Restaurant

What time do you have to go on a Thursday to get $4 margaritas ? Also is it any flavor?

Hi Ellie! $4 margs starts at 9pm on Thursday! it is all Classic Rio Margs - on the rocks or frozen - and includes the classic flavor, strawberry, or manberry. hope to see you soon!!

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Cozobi Fonda Fina

4.7(95 reviews)
0.1 mi•Central Boulder

Our go-to Mexican spot. We ordered guacamole a las brasas, camote asado, aguachile de pepino, taco…read morede pastor, and for mains, carne asada and huachinango a la veracruzana. Drinks: lemonade. All in, it came to around $200. The guacamole is a real standout. The camote asado (charred sweet potatoes) is my favorite - great char, well-seasoned. The lemon rice that comes with the fish was also great. One genuinely great thing about this place: everything is gluten-free, which makes it an easy pick whenever family visits since a few of them can't do gluten. That said, I'm personally a big flour-tortilla person, so if that's your preference too, just know this isn't that, but I still really enjoy coming here regardless. Solid, reliable, and great for gluten-free dinners.

Incredible. Absolutely wonderful. A gem in the middle of the USA…read more I dined during happy hour at 2pm right when it opened. Everyone from the hostess, and all the wait staff were so kind -and made me feel welcomed. I was on call and unfortunately had two phone call I had to take, and my waitress was so gracious to send back one of my plates so that it can come out later warm and fresh. The service felt like casual fine dining, in the best sense. I really appreciated this. The happy hour menu is small but mighty. One thing I was intrigued by before coming here was that the corn is flown in from Mexico, celebrating and providing a cultural experience. I'm so grateful that they delivered on the oral experience with the balance in flavor, texture, and spice. No one ingredient overpowered the dishes service, and even the spice was there, but not to a miserable level that often leaves me suffering as I eat my food. I had the sopes de picadillo and the taco de puesto. Seriously a glorious meal. I wish I was hungrier so I could try more. Because of my work schedule, I couldn't return back during my trip, but I wish I had the chance. I would definitely make it a priority to dine here again if afforded the chance to return to Boulder!

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Tierra y Fuego Taqueria - Mole Poblano Dinner

Tierra y Fuego Taqueria

4.6(82 reviews)
2.8 mi•North Boulder

Stopped here for lunch and got the 11$ street taco, a side of cauliflower bites and a Jarritos…read moreTamarind soda. Cauliflower bites came out first, they were ok, with the mild sauce to dip. The tacos took some time and were loaded with meat, but it tasted like it was just boiled meat, no seasoning... gave them a squeeze of lime and used the hot salsa which as well was fairly flavorless, the mild salsa had a lot more flavor... Ate 2 tacos and was done, unfortunately I wasn't that impressed with the flavor in general... 3 stars.

Sadly can't recommend this place. The night I went the whole restaurant was being ran by teen boys,…read morewhich is fine. They were working really hard and trying their best, but there was no adult to assist them in the front and it was a super busy night. They were very young and there were issues that were arising that needed adult guidance. I can't even comment if the food was good or not because I left before I got it. The first time my tacos came out it was only half of the order and there was a large, super moldy lime on my taco. I told the young boy and he was very polite about it took it back to the kitchen, but then a few seconds later just brought the same tacos out. I told him I didn't want the same food and wanted it fresh, that might be dramatic for most but for me with an immune disorder i can't risk it. I waited for a while, but I was turned off enough by the whole situation that I didn't wanna eat there anymore so I just left no refund or anything. Sad, I wanted to like this place.

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Tierra y Fuego Taqueria - Chips, rice & beans and huarache  & taco.

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Santo - Chicken burrito.

Santo

4.0(301 reviews)
0.6 mi•Newlands
•$$$

Even for a pick up for dinner, they shine. The food was ready and hot and handed over quickly. The…read morebar was busy on the evening before game day and front entrance was clearly ready for students, alums and local residents for Homecoming Weekend. We had our favorite shrimp tacos with sides of rice and of beans. It's a fun, quick and affordable casual meal for us to have at home. Eating in is always fun too.

Wanted a new experience, so we checked out the menu for this new restaurant and it looked tasty…read moreenough to give it a shot on a Sunday afternoon. We walked in and at first it seemed like it had a decent vibe. I had actually been to this location before when it was a different restaurant. Seems like this spot changes ownership pretty frequently, which in hindsight probably says something. Right away we noticed a bunch of tables, especially the booths, still hadn't been bussed. We were told to "sit anywhere," but the only clean tables available were high tops and we wanted a booth, so we waited for the busser, who moved at a pace that honestly felt unbelievable. He seemed to be clearing tables one cup and one plate at a time, walking each item individually back to the kitchen. It was painfully inefficient. It was obvious both he and the girl at the bar saw us standing there waiting for a booth to be cleared, but nobody seemed concerned about it. Eventually the table was finally cleared, but then it sat there dirty for a long time without being wiped down. At that point we just sat anyway, assuming someone would quickly come over and clean it once they saw guests sitting there. In most restaurants, that's standard. Not here. After waiting even longer, I finally asked for a rag so I could wipe the table down myself. The response I got back was rude: "Why don't you just sit at one of the tables that's already clear?" That pretty much sealed it for us. The vibe was off from the second we walked in, and you could feel the lack of care throughout the whole place. At that point we didn't even want to order food because it already felt like the experience was headed downhill. We got up and left. Honestly, I'm glad we did. Service and atmosphere usually reflect what's happening behind the scenes, and I had zero confidence the food experience would've been any different. After leaving, we went to El Centro instead and had a much better experience. I'd recommend choosing that over this place any day of the week. Giving people a good dining experience really isn't that complicated. Sometimes it honestly feels like restaurant staff have never gone out to eat themselves and experienced what good hospitality actually feels like. Unfortunately this place completely missed the mark. We won't be back, and I wouldn't recommend it.

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Santo - Ambience

Ambience

Santo - Sopapillas

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Santo - Barbed wire fence post sculpture. So cool!

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Mojo Taqueria Boulder - Chips, salsa & guac

Mojo Taqueria Boulder

4.3(104 reviews)
1.8 mi•Parkside

Waiting for my tires to be changed I needed some place to hang out and I'd never been here before…read moreso off I went. The staff were so friendly and accommodating! The vibe is chill and I sat outside as it was a beautiful day. It was happy hour so I ordered a margarita and it was just like I like them! Fresh, no made with a sickly sweet and sour mix and refreshing! I got a chicken tinga taco and it was packed with meat. No skimping for happy hour here. I am so glad that I stopped in as now I know where to meet my friends who live on the north side of town!

I decided to stop by Mojo Taqueria in Boulder after watching some concerts at PorchFest, and we…read morehappened to catch happy hour, so the food was a little cheaper than usual. I tried the chicken tinga taco, carnitas taco, short rib enchilada with Christmas sauce, and the chicken tinga tostada. The chicken tinga tostada was definitely my favorite. It had really fresh greens and a lot of flavor without being too heavy. The chicken tinga taco was probably my second favorite and had some of those same flavors. The carnitas taco was good too, but it didn't stand out quite as much compared to the other two. The enchilada was probably my least favorite, although I really liked the red sauce. I got the Christmas sauce with both the green and red sauces, and the red had a really nice smoky flavor. The service was actually impressive. Our server was really friendly, and somehow we got our food faster than we usually do at some fast food places. I also really liked all the plants and flowers out front, which gave the place a nice atmosphere. Overall, I really enjoyed it and would definitely come back.

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3 taco plate

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Efrain's of Boulder Mexican Restaurant & Cantina - Chicken Chimichanga

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3.9(518 reviews)
1.0 mi
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Amazing burrito at Efrain's and I had a great beer with it, I love this place and I usually get it…read moreonce a month.

I had been to the Lafayette location more than a decade ago and never returned. It simply did not…read moresuit me at all. I recently saw that a different family group operated this one in a very convenient part of Boulder so I decided to give it a try. A favorite classic family run restaurant with a similar menu had closed in 2014 after being in operation for 20 years. We missed that sort of menu. This is it, all the way to type of sopapillas and the classic plates with rice and beans , sauce and melted cheese. The family appeal carries through from hosts to servers to clearing staff. The menu is large though it appears that most only vary by central item. The entrees all come with the same sides and a sauce. Next time I will ask for light sauce as it pretty much buried my tamales. They need to stand out and shine and I love the taste of masa. The server was right on the spot with our drinks and we had a comfortable and clean booth. Chips and salsa were at the table as we were seated. They are plainer than some in town but still fresh and classic and free, just like Casa Alvarez, our old classic. The place was buzzing with customers young and old a perfect place for a comfortable and swiftly served meal. The space filled up quickly and though they have an enclosed patio and an open patio, not a soul for takers including us, on a 30° degree evening with a "breeze" so there was a line for tables as we left. We'll be back in a warmer weather and customize our plates a bit. It's friendly and filling and for anyone. And easy on the wallet too. Nice to have a family friendly spot like this in an easy to park shopping center with McGuckins in the lead.

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Efrain's of Boulder Mexican Restaurant & Cantina - Enclosed patio was pleasant.

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Enclosed patio was pleasant.

Rio Grande Mexican Restaurant - mexican - Updated October 2026

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