Race Discovery
Montana Trail Series
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Montana Trail Series

West Yellowstone, Montana, United States View on map
Jul 10, 2027 – Sep 25, 2027 (America/Denver local time)
Trail running

About this race

Join us for one or four events in the Montana wilderness during the summer of 2026!

July 11

Yellowstone Trail Marathon and Trail Races

West Yellowstone, MT

50K, Marathon, 25K, 10K, 5K

July 18

The Bob Marshall Trail Races

Seeley Lake, MT

50K, Marathon, 25K, 10K

July 25

The Divide 50 and 25K

Thompson Park (Near Butte), MT

50K, 25K

August 1

The Yellowstone Trail Marathon and Trail Races

West Yellowstone, MT

50K, Marathon, 25K, 10K, 5K

Every participant receives:

Custom race medal (Bundle members receive one race medal per season)
Custom race bib
Custom race stickerHammer Nutrition products
Aid station support
Certified course
Recorded/published results

Discounted race shirts are available in the race store.

Pick your distance

Trail running

The Yellowstone Marathon

Jul 10, 2027 Marathon 9:00 AM
$80.00
Open

The Yellowstone 1/2 Marathon

Jul 10, 2027 Half-Marathon 9:00 AM
$70.00
Open

The Yellowstone 50K

Jul 10, 2027 Ultra 9:00 AM
$80.00
Open

The Yellowstone 25K

Jul 10, 2027 25K 9:00 AM
$70.00
Open

The Yellowstone 10K

Jul 10, 2027 10K 9:00 AM
$50.00
Open

The Yellowstone 5K

Jul 10, 2027 5K 9:00 AM
$45.00
Open

Bob Marshall Marathon

Jul 10, 2027 Marathon 9:00 AM
$80.00
Open

The Bob Marshall 1/2 Marathon

Jul 10, 2027 Half-Marathon 9:00 AM
$70.00
Open

The Bob Marshall 50K

Jul 10, 2027 Ultra 9:00 AM
$80.00
Open

The Bob Marshall 25K

Jul 10, 2027 25K 9:00 AM
$70.00
Open

The Bob Marshall 10K

Jul 10, 2027 10K 9:00 AM
$50.00
Open

The Yellowstone Marathon

Jul 10, 2027 Marathon 9:00 AM
$75.00
Open

The Yelllowstone 1/2 Marathon

Jul 10, 2027 Half-Marathon 9:00 AM
$70.00
Open

The Yellowstone 50K

Jul 10, 2027 Ultra 9:00 AM
$80.00
Open

The Yellowstone 25K

Jul 10, 2027 25K 9:00 AM
$70.00
Open

The Yellowstone 10K

Jul 10, 2027 10K 9:00 AM
$50.00
Open

The Yellowstone 5K

Jul 10, 2027 5K 9:00 AM
$45.00
Open

The Divide 50K

Jul 10, 2027 Ultra 9:00 AM
$80.00
Open

The Divide 25K

Jul 10, 2027 25K 9:00 AM
$70.00
Open

The Divide Marathon

Jul 10, 2027 Marathon 9:00 AM
$80.00
Open

The Divide 1/2 Marathon

Jul 10, 2027 Half-Marathon 9:00 AM
$70.00
Open

Typical race-day weather

Based on 3 years of Open-Meteo archive data for this event's race dates in West Yellowstone, plus the 3 days either side.

Temp (°C)
Minimum temperature (race-week average) 8.8° / Maximum temperature (race-week average) 26.8°
Feels Like (°C)
Minimum feels like — heat index / wind chill (race-week average) 6.5° / Maximum feels like — heat index / wind chill (race-week average) 27.2°
Peak wind (km/h)
Strongest wind of the day (race-week average)
17.0
Precip (mm)
Precipitation over the day (race-week average)
1.0mm
Humidity
Mean relative humidity (race-week average)
53.4%
Sunrise
Sunrise at the start line on July 10, 2027 (MDT)
Sunset
Sunset at the start line on July 10, 2027 (MDT)
Daylight
Hours between sunrise and sunset on race day
15h 21m

The sun rises at 5:49 AM and sets at 9:10 PM local time (MDT) in West Yellowstone on July 10, 2027 — 15h 21m of daylight.

Course

No course map published yet.

The organizer hasn't released a route for this event, and we don't publish guesses. If you're the organizer, send us a GPX file and we'll draw the profile.

Reviews

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Where this page comes from. Race details were last updated on . We re-check listings regularly and again in the week before race day.

  • Entries, prices, waves and inclusions — the event's official registration page
  • Temperature and humidity — Copernicus ERA5 reanalysis via Open-Meteo (CC BY 4.0)
  • Elevation and terrain relief — Copernicus DEM GLO-90, ESA (CC BY 4.0)
  • Comparisons and counts — Race Discovery calendar, 2 West Yellowstone events

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