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Rut 21K

The Rut Mountain Runs Rut 21K 2027 · September 9, 2027 · Big Sky Resort base area · 21 km · 1,220 m of climbing. Course & live tracking on Livebib.

Big Sky Resort base area

Distance
21 km
Ascent
+1,220 m
High point
2,971 mCastle Rock
Stations
3

The course

The whole race, as a ridgeline

▲ Castle Rock · 2,971 m

▲ high point

About The Rut Mountain Runs Rut 21K 2027

The Rut Mountain Runs Rut 21K 2027 takes place on Thursday, September 9, 2027 in Big Sky Resort base area.

Rut 21K: 21 km, 1,220 m of climbing, start and finish at Big Sky Resort base area.

There are 3 stations on the course.

Organiser: The Rut Mountain Runs.

The climbs

The climbs that decide the day

  1. 3D
    01

    Castle Rock

    5.6 km+645 m11.6 %

    crest at km 5.6

  2. 3D
    02

    Castle Rock

    0.9 km+155 m17.2 %

    crest at km 7.3

  3. 3D
    03

    Andesite Aid Station

    2.2 km+298 m13.6 %

    crest at km 14.9

  4. 3D
    04

    Big Sky Mountain Village

    1 km+111 m10.8 %

    crest at km 19.9

The course

On the map

Rut 21K 2027Open the full-resolution map

The roadbook

Stations

  1. Challenger Aid Station

    4.2 km2,770 m

    1. Swiftcurrent Aid Station8.92,795
    2. Andesite Aid Station14.82,638

Course data verified November 2, 2026