The Tunnel Springs Trail is a steady, rigorous climb of feet through Ponderosa pine forest on the south face of Observatory Mesa. The trail begins just north of the Railroad Springs neighborhood, and crosses the BNSF tracks in a bicycle and pedestrian underpass. The trail climbs steeply for just under a mile, gaining almost 400 feet in elevation, and then levels out on top of the mesa.
Railroad Springs FUTS Trail to Mars Hill FUTS Trail
1.9 miles | 3.1 kilometers
Aggregate: 100% of the trail (1.9 miles | 3.1 kilometers)
Easy grades: 64% of the trail has grades of less than 5%
Moderate grades: 27% of the trail has grades between 5 and 10% (2,800 feet | 853 meters)
Steep grades: 9% of the trail has grades between 10 and 15% (900 feet | 274 meters)
Very steep grades: None of the trail has grades of more than 15%