Personally, I like this place in Olathe, Kansas. There are currently three access points for this area that I know: 135th street, 119th street & 127th and Clare Road. The entrance off 127th and Clare has Columbine Nature trail--bikes are permitted so be aware on this Nature trail.
The paved path from either 135th or 127th entrances runs about 4 miles out and does not loop. It has some gentle inclines and benches along the route.
There's a play area at 135th with restrooms open during regular season and a Johnny-on-the-spot during winter.
The 127th and Clare parking only has a Johnny-on-the-spot.
I haven't been to the 119th location specifically, but where you see the New Trail sign in the photos I've posted, is slightly across from where that parking area is. I do not know what amenities, if any, are there.
Definitely this place is family- & dog-friendly. You're likely to see bicyclists too.
I would definitely recommend this park and both trails. Didn't get any Columbine since it was closed due to muddy and/or unsafe conditions. read more