Little Yellowstone is a 9.4 mile out and back trail located near Grand Lake, Colorado and is rated as moderate. The trail is primarily used for hiking and is accessible from May until October. 9.4 miles Out & Back 1100 feet hiking Hide Map AllTrails Terrain Road Satellite Expand Map Sign up now to see this map! ReviewsPhotosTracksDeWayne Hansen4 months ago135 Completed125 ReviewsAlways nice hiking in RMNP. June 1999Todd Sanker4 years ago4 Completed1 ReviewsVery scenic and fun hike. We saw moose, elk, and big horn sheep along the way. Muddy trail at times but this year has had an abnormal amount of rainfall.