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    First Flatiron

    4.4 (10 reviews)

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    Nic Z.

    We came, we climbed, we conquered. I thought my friend was joking when he pointed to the top (while we were standing in the parking lot) and said, "We're going up there." ("Yeah, right.") Little did I know, I would be transported back to the unrestored portions of the Great Wall of China and spend the next hour climbing up a steep incline of make-do "steps." Cool! To get a view at the top, you'll have to climb atop one of the giant boulders, but it's worth it. Perfect place to spend a sunny afternoon. Bonus: This place makes the four-legged children happy (and tired -- and a tired dog makes for a happy owner.).

    Jason S.

    This is actually a hike hike. You're going to have to work a bit to get up to the 3rd iron or the arch. Nice views. Keep your eyes open as the trail path is not always clear. However, if you find yourself hopping over trees, you've probably left the trail. Good luck!

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    6 years ago

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    7 years ago

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    13 years ago

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    13 years ago

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    9 years ago

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    13 years ago

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    6 years ago

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    13 years ago

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    19 years ago

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    Chautauqua Park - More excavators

    Chautauqua Park

    (348 reviews)

    Things are changing here after 100 years. Chautauqua Auditorium is being renovated and winterized…read more It had been needed before this as another concert venue in Boulder would have been appreciated sooner but once Boulder won Sundance it became a necessity. But when you come in the summer it will still look the same. A removable heated tent will be erected inside and heated by geothermal heat from underneath that will be transferred underground from the dining hall kitchen's surplus stored energy. So modern in such an old structure. So when you visit this spring there is a lot of truck traffic and digging and detours around the building but you can see from the last picture, the green and the view of the Flatirons are undisturbed.

    Overall, it was a refreshing late October hike on the Flatiron Loop trail! Since we were first time…read morevisitors, we asked for a trail recommendation at the ranger station that fit in with our plans, so something in the 2-hr range. They suggested going in a counterclockwise direction which got the elevation gain done sooner and would finish with a more gradual descent. Being a sea-level creature, I did have to catch my breath a few times on the way up. Now, at the uppermost part of the loop after a bunch of stone steps, there were some all-rock areas where hunching down with a hand or two on the rock helped with balance. Afterward we noted signs on the trail allowing horses. They must have goat like abilities for those rocky parts, I thought. If you like seeing people, there were plenty during the early afternoon hours, sometimes making passing on narrow trail sections a little tricky. We got lucky with parking, going around the large grassy area only once. On the way out, we thanked the ranger for the great recommendation, gave up our parking spot to the next lucky person and went on our way, with plenty of time for our next activity.

    Lion's Lair Trail - Views at the end of spring.june 14, 2016

    Lion's Lair Trail

    (5 reviews)

    Great trail. Nice views. A little over 4 miles with a manageable, gradual incline. I'd say it's…read moremoderate but not particularly challenging. Saw a lot of people running. The trail is well-maintained and marked. The trailhead sign isn't readily apparent from the road so we had to pull over and check that it was the right one. The GPS did have the trailhead as slightly further down the road but we ended up in the right place. There's parking along the road, FYI. The trail will take you to the top of Mount Sanitas. Take a look at the map I posted -- there are multiple trails that take you to the peak.

    Beautiful hiking trail just outside of Boulder. I freaking love this trail. I was in Denver and…read moreBoulder for a conference & to see friends. This was one of the short hikes I was hoping to squeeze into my busy day so that I could get that amazing mountain view that I don't get to see in the city. The trail itself is not too steep, and offers beautiful views all around, no matter where you are on the trail. When you are navigating to the trail, you will be driving uphill, and lose cell signal as you approach the base. There isn't really any signal on the trail in general. Parking is all roadside parking at the curved bend of a road. There are clearly areas to park for hikers. This trail when I was hiking was populated by locals either hiking solo or in a small group. Would definitely recommend for a couple hour hike. Only took me about 2 hours.

    Gregory Canyon - Right by the road at the trailhead. Just enjoying a nice fall day!

    Gregory Canyon

    (6 reviews)

    This trailhead is a hub with access to many other trails. I wanted to climb Flagstaff Mountain and…read morethere are multiple options to get to the top. I started with the GC trail and created a loop with Rangeview and Flagstaff. Rangeview delivered an amazing view of the Rockies. GC is on an incline so you get to look down into the creek and canyon. The western side also offers views of the adjacent Chautauqua Park. Flagstaff summit was not as dramatic, and upon the descent you look out onto Downtown Boulder. I inadvertently took Crown Rock trail, which I do not recommend. It has a lot of loose rocks and gets slippery. Trails were easy to follow and major intersections had clear signage. Only six parking spots! However, you can park for free with some off-road spots on Baseline Rd. I regret starting at 9:30 as trails were pretty sunny. Rangeview offered some needed shade.

    Wow what a marvelous trailhead! The other reviewer was right, you could get to all of Boulder…read moreMountain Parks from here. I arrived around 11am on a weekday and the lot was about half full. There's a few trails that all connect up to Green Mountain, so take your pick. It too me about an hour to summit. The trail was beautiful and in better shape than the Bear Peak trail. It's less steep, but still pretty long and can be an adventure. You get some amazing views, better than Bear I think. Seeing the first flatiron above the fog was so pretty. The summit sports a register and a lot of chickadees begging for food. Don't feed them! Enjoy the mountain air and sunshine, and the fact your so close to town after your hike!

    First Flatiron - hiking - Updated May 2026

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