Overview 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. Reviews Photos Tracks Todd Sanker (88) almost 3 years ago N/A: 4 Completed 1 Reviews Very 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.