Hikes›United States›Colorado›William Frederick Hayden ParkHikes in William Frederick Hayden ParkGreen MountainDay hike · 18.4 km · ↑ 349 mJumbo TronDay hike · 21.6 km · ↑ 417 mHawk WatchDay hike · 17.9 km · ↑ 499 mGreen Mountain TrailDay hike · 11.0 km · ↑ 279 m