Course
A four-mile lap with about 1,900 ft of climb, starting at the M-Trail car park in Missoula. Each lap climbs the M switchbacks, then the steep Northwest Ridge Trail to the summit of Mt Sentinel, descending by the Boy Scout Trail and M Trail to the start. A small aid station sits at the summit. Runners repeat the lap as often as they can inside a 3, 6, 12 or 24 hour limit.
Key dates
- !Entries openSat 31 Oct 2026 · in 9 days
- ★Race dayFri 12 Feb 2027
About
Running Up for Air (RUFA) Mt. Sentinel is a 3, 6, 12, or 24-hour winter endurance challenge on Mt. Sentinel (5,158’ elevation), the iconic mountain on the edge of Missoula. Participants ascend the mountain as many times as possible to raise awareness and funds for Climate Smart Missoula's efforts to improve air quality.
Save Running Up for Air | Mt Sentinel to your season and RunCalendar reminds you the morning entries open and before they close. Free on iPhone, no account needed.
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Snow Joke Half Marathon
One of Montana's longest-running winter races
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A confirmed date shows its day; a provisional one shows only its month, because we won't claim a day we don't have. This page is rebuilt every night from the RunCalendar catalogue.