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The Rut Mountain Runs

Name: The Rut Mountain Runs
Start: 2026-09-11
End: 2026-09-13
Location: Big Sky, Montana

location_city Big Sky

location_on Montana

flag United States

calendar_today 11 Sep, 2026 – 13 Sep, 2026

directions_run Running

language Official Website

About the Event

The Rut Mountain Runs are a 3-day celebration of Mountain Running in Big Sky, Montana, on Sept 12-14, 2025. Registration opens on Jan 7th at 8 AM Mountain Time

Races Offered

Lone Peak Vertical Kilometer

Sep 11, 2026

straighten

Distance — 2.5 Miles

terrain

Type — Trail running

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10:00

Trifecta (50K,28K,VK)

Sep 11, 2026

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Distance — 50.6 Miles

terrain

Type — Trail running

timer

10:00

Trifecta-SCORING

Sep 11, 2026

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Distance — 50.6 Miles

terrain

Type — Trail running

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10:00

21k

Sep 11, 2026

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Distance — 13.3 Miles

terrain

Type — Trail running

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11:00

28k

Sep 12, 2026

straighten

Distance — 17.8 Miles

terrain

Type — Trail running

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08:00

Kids 1K Runt Run

Sep 12, 2026

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Distance — 1K

terrain

Type — Trail running

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16:45

50k

Sep 13, 2026

straighten

Distance — 30.3 Miles

terrain

Type — Trail running

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06:00

11k

Sep 13, 2026

straighten

Distance — 6.41 Miles

terrain

Type — Trail running

timer

07:30

Weather Overview

These values represent the 3-year monthly averages for September in Big Sky.

Temp (°C)

Feels Like (°C)

thermostat 4.8° / 20.8°

wb_sunny 2.6° / 17.4°

Wind (km/h)

Humidity (%)

air 5.5 /

water_drop 62.9%

Temp (°C)

Feels Like (°C)

Wind (km/h)

Humidity (%)

thermostat 4.8° / 20.8°

wb_sunny 2.6° / 17.4°

air 5.5 km/h

water_drop 62.9%

About Big Sky

Big Sky is an alpine ski and golf resort community in Montana. The community's two large ski resorts, Big Sky Resort and Moonlight Basin, merged in 2013. In 2020, it was home to about 3,600 people.