770.a Tunnel
Trail facts
- Length
- 6.7 mi mapped
Length sums the trail as the community maps it, not a trip distance. Hike out and back and you will cover it twice; check the shape of the route before you count on the figure.
This trail is community-mapped on OpenStreetMap. Access, conditions, and maintenance are not verified by the mapper or by us. Check with the land manager before you go.
Mount Bierstadt is about 38 miles away straight-line. We hike it, verify conditions, and keep a full guide for it.
Read the full guidePlan a day on this trail
Tell the Trip Builder where you are headed and it assembles a day-specific kit with weather, daylight, and terrain in mind.
Build your kitTrail data from OpenStreetMap contributors, snapshot 2026-07-11. Licensed under the Open Database License (ODbL) 1.0.
Open Database License 1.0 · View this trail on OpenStreetMap · Open trail data