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Marathons in Idaho, United States

20 upcoming marathons listed in Idaho across 2 cities. Next: Priest Lake Marathon on September 19, 2026.

20marathons upcoming
2cities
September 19, 2026Next race
Marathon, Half marathon, Ultra, 10K, 5K, VirtualDistances
Priest Lake, Idaho, United States
19SEP
ULTRA
Priest Lake Marathon
Priest Lake, Idaho, United States
September 19, 2026 SEP
Lewiston, Idaho, United States
23SEP
ULTRA
Northwest Series - Day 5 - ID
Lewiston, Idaho, United States
September 23, 2026 SEP
Lewiston, Idaho, United States
24SEP
42.2K
Northwest Series - Day 6 - ID
Lewiston, Idaho, United States
September 24, 2026 SEP
Boise, Idaho, United States
26SEP
ULTRA
Bogus 50/50
Boise, Idaho, United States
September 26, 2026 SEP
Boise, Idaho, United States
26SEP
21.1K
St. Luke's FitOne 5K/10K/Half Marathon
Boise, Idaho, United States
September 26, 2026 SEP
Kellogg, Idaho, United States
03OCT
21.1K
Jackass Half Marathon & 5K
Kellogg, Idaho, United States
October 3, 2026 OCT
Boise, Idaho, United States
10OCT
42.2K
City of Trees Marathon
Boise, Idaho, United States
October 10, 2026 OCT
Hayden Lake, Idaho, United States
10OCT
ULTRA
Hayden Lake Marathon
Hayden Lake, Idaho, United States
October 10, 2026 OCT
Cambridge, Idaho, United States
10OCT
42.2K
Rush Creek Stampede
Cambridge, Idaho, United States
October 10, 2026 OCT
Boise, Idaho, United States
17OCT
42.2K
Idaho Running Day
Boise, Idaho, United States
October 17, 2026 OCT
Rexburg, Idaho, United States
24OCT
21.1K
Haunted Half Marathon and 5k by Run the Undergrad
Rexburg, Idaho, United States
October 24, 2026 OCT
Boise, Idaho, United States
25OCT
42.2K
Boise Marathon Idaho
Boise, Idaho, United States
October 25, 2026 BQ Qualifier
Coeur d'Alene, Idaho, United States
25OCT
21.1K
Halloween Hustle
Coeur d'Alene, Idaho, United States
October 25, 2026 OCT
Sun Valley, Idaho, United States
07NOV
42.2K
REVEL Sun Valley
Sun Valley, Idaho, United States
November 7, 2026 BQ Qualifier
Boise, Idaho, United States
07NOV
ULTRA
ZD30 The Summit (1 Mile, 5K, and 10K, 1/2 Marathon, 30 Mile Ultra)
Boise, Idaho, United States
November 7, 2026 NOV
Boise, Idaho, United States
14NOV
21.1K
Boise Half Marathon
Boise, Idaho, United States
November 14, 2026 NOV
Idaho Falls, Idaho, United States
08JAN
ULTRA
Dizzy Horse, A Winter Backyard Ultra
Idaho Falls, Idaho, United States
January 8, 2027 JAN
Boise, Idaho, United States
17APR
21.1K
Race to Robie Creek®
Boise, Idaho, United States
April 17, 2027 APR
Eagle, Idaho, United States
01MAY
42.2K
Boise River Marathon
Eagle, Idaho, United States
May 1, 2027 MAY
Idaho, United States
16MAY
ULTRA
YMCA Famous Idaho Potato Marathon
Idaho, United States
May 16, 2027 MAY

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Cities

Place Marathons
Boise 1
Sun Valley 1

Planning notes for Idaho, United States

Use this region page to shortlist 20 upcoming races by date, distance, registration path, and official source.

  • Next racePriest Lake Marathon on September 19, 2026
  • Busy monthsOctober (8), September (5), November (3)
  • DistancesMarathon, Half marathon, Ultra, 10K, 5K, Virtual
  • VerifyOpen each race page, then confirm details from its official, registration, course-map, or source link.

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