Best hikes in Boulder Open Space and Mountain Parks

Ambleway maps 78 hikes in Boulder Open Space and Mountain Parks, from a 1.9-mile walk to a 16-mile day out. 22 of them score as wild, staying clear of roads and development for most of the route; the wildest is Eldorado Canyon Trail–Ethel Harrold Road, 3 sights. The biggest climb is Mallory Cave–Viewpoint, 15 sights, gaining 4,637 ft, and the network tops out at 8,517 ft. 31 start within walking range of public transit.

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