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Idaho 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 running races in Idaho for 2026-2027! Our updated list features 90 exciting races across the region. Find your next race in Idaho below and join the running community at these great events!

Half Marathons Marathons Trail Runs Triathlons
August 2026
Aug
8-9
Sa - Su

Boise Spartan Trifecta Weekend

Obstacle Run 5 km 10 km Half Marathon 4 hr
Aug
8
Sa

Coeur d'Alene Triathlon

Triathlon
Aug
8
Sa

Outlaw Trail Ultra Half Marathon

Trail Run Half Marathon
Aug
14-16
Fr - Su

Wallace Huckleberry Festival 5k

5 km
Aug
14
Fr

Inkom Last Man Standing 1.1

Backyard Ultra
Aug
15
Sa

The Great Snake River Triathlon

Triathlon
Aug
22
Sa

Foothills XC 12K

Trail Run 5 km 12 km
Aug
30
Su

Priest Lake Triathlon

Triathlon
September 2026
Sep
5
Sa

Pocatello Marathon

3 mi 6 mi 13 mi 26 mi
Sep
5
Sa

Salmon Marathon

Half Marathon Marathon
Sep
12
Sa

Jen McKenna Paddle and Run

Multisport
Sep
19
Sa

Priest Lake Marathon

10 km Half Marathon Marathon 50 km
Sep
19
Sa

Bear Lake Brawl Triathlon

Triathlon
Sep
19
Sa

Walk, Run, Read for Literacy

5 km
Sep
19-20
Sa - Su

Idaho Mountain Trail Ultra Festival (IMTUF 100)

Trail Run 20 mi 100 mi
Sep
19
Sa

Rexburg Rush Triathlon

Triathlon
Sep
26
Sa

Top of Tamarack

15 mi
Sep
26
Sa

Speedy Spud

3 mi
Sep
26
Sa

LESS Society Table Rock Run

Trail Run 4 mi
October 2026
Oct
3
Sa

Legends Never Die

Trail Run 13 mi 34 mi