| Location | San Juan Mountains |
| State | Colorado |
| Distance | 100 miles |
| Format | Loop |
| Terrain | Trail |
| Elevation Gain | 34,000 feet |
| FKT | |
| Camping And Permit Info | |
| GPS Info | RunTrail |
| Caltopo | |
| Maps | San Juan Mountains Association |
| Google Earth | |
| Useful Links | Hardrock 100 general course description |
| Lynn K Hall | |
| Softrock planning and logistics - Ry Runs |
Single and Multi Day Trips