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Idaho Trail Running Calendar 2026-2027

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Monthly updates for Idaho

Get new running races (and updates) in your inbox every month.

Explore the best trail runs in Idaho for 2026-2027! Our updated list features 25 exciting races across the region. Find your next race in Idaho below and join the running community at these great events!

February 2026
Feb
7
Sa

Soup-In-The-Snow

Trail Run 9 mi
Feb
7
Sa

Western Pleasure Snowshoe Roundup

Trail Run 5 km 10 km
March 2026
Mar
19-21
Th - Sa

Pulse Endurance Runs

Trail Run 6 hr 12 hr ... 24 hr 48 hr
April 2026
Apr
18
Sa

Spitfire Ultra Trail Challenge

Trail Run 5 km 12 km 30 km 55 km
Apr
25
Sa

Weiser River 50K Ultra & Relay

Trail Run 50 km
May 2026
May
1-2
Fr - Sa

Heavens Gate Marathon and Half Marathon

Trail Run 3 km 26 km 53 km
May
9
Sa

Over The Top Trail Race - Pocatello, ID

Trail Run 5 km 10 km Half Marathon 30 km
June 2026
Jun
5-6
Fr - Sa

Scout Mountain Ultras

Trail Run 23 mi 50 km 54 mi 100 mi
Jun
13
Sa

Dirty Dog Trail Marathon and Half Marathon

Trail Run 13 mi 26 mi
Jun
20-21
Sa - Su

Race The Wolf

Trail Run 5 mi 13 mi 26 mi
Jun
20
Sa

River Of No Return Endurance Runs

Trail Run 32 km 55 km 108 km
July 2026
Jul
11
Sa

Beaverhead Endurance Runs

Trail Run 55 km 100 km
Jul
24-26
Fr - Su

Standhope Ultra Challenge

Trail Run 30 km 60 km 100 mi
Jul
25-26
Sa - Su

Standhope 100

Trail Run 100 mi
Jul-Aug
31-1
Fr - Sa

Boise Front Trail Festival

Trail Run 5 mi 10 mi
August 2026
Aug
8
Sa

Outlaw Trail Ultra Half Marathon

Trail Run Half Marathon
Aug
22
Sa

Foothills XC 12K

Trail Run 5 km 12 km
September 2026
Sep
19-20
Sa - Su

Idaho Mountain Trail Ultra Festival (IMTUF 100)

Trail Run 20 mi 100 mi
Sep
19
Sa

Pocatello Fall Ultra

Trail Run 20 km 60 km 100 km
Sep
24
Th

Northwest Series Day 6

Trail Run 5 km 10 km ... 26 mi 50 km