Observed arrival · 2026-10-10
Ultra-Trail Bill Dooper Memorial Loop
A page describing a 251-mile mountain loop through Colorado’s Mosquito, Tenmile, and Sawatch ranges, with 20 fourteeners and nearly 89,000 feet of elevation gain.
○Open
⊠Login
$Paid
†Ads
✦Pretty
●Pro
◎Niche
◉Human
⚑Risk
ƒJS
- For
- Experienced mountain athletes and section hikers
- Worth noticing
- The listed route is 175.5 miles on trail and 75.5 miles off trail; Mount Bross is explicitly marked closed and off-limits.
Field notes
The route is assembled from variations of the Holy Nolan’s Line and Mosquito Tenmile Traverse, joined by north and south connectors for counter-clockwise travel. Its specification table separates 175.5 on-trail miles from 75.5 off-trail miles, lists the 20 fourteeners, and marks Mount Bross as closed to public access. The page also names the wilderness areas and national forests along the route.
Observed signals
Read the marks
Editorial observations of this landing page, not a rating.
○OpenPublic substance visible
◎NicheUnusually specific use
One card from the complete issue