5K10KHalf Marathon
- Price
- $54-$75.20
- Field size
- 14,000 · based on the organizer's entry cap
Half Marathons in Idaho
Every upcoming Half Marathon race we know about in Idaho. Where a detail isn't confirmed, we mark it unknown rather than guessing.
Race results
Showing 16+ of 16 races · loading the full list…
Sat, Oct 10, 2026 · 7:30 AM · Hayden Lake, ID
Hayden Lake Marathon
0.5M5K6.55MHalf MarathonMarathon
- Price
- Free-$160
- Field size
- 150 · based on the organizer's entry cap
Sun, Oct 11, 2026 · 8:00 AM · Boise, ID
City of Trees Marathon
5K10KHalf MarathonMarathon
- Price
- $22.20-$122.90
Sat, Oct 24, 2026 · 10:00 AM · Rexburg, ID
Haunted Half Marathon and 5k by Run the Undergrad
5KHalf Marathon
- Price
- $11.60-$64.60
Sat, Oct 24, 2026 · 8:00 AM · Coeur D Alene, ID
Eternal Surrender Half Marathon
5K10KHalf Marathon
- Price
- Price on registration site
Sat, Oct 24, 2026 · 9:00 AM · Boise, ID
YMCA Halloween Run presented by Micron
1M5KHalf Marathon
- Price
- $33.63-$65.65
Sun, Oct 25, 2026 · 8:00 AM · Coeur d'Alene, ID
Halloween Hustle
0.5M5K10KHalf Marathon
- Price
- Free-$117.60
- Field size
- 25 · based on the organizer's entry cap
Sat, Nov 14, 2026 · 9:00 AM · Boise, ID
Boise Half Marathon
Half Marathon
- Price
- $80.50
- Field size
- 600 · based on the organizer's entry cap
Sun, May 2, 2027 · 6:30 AM · Boise, ID
Boise River Marathon
5K10KHalf MarathonMarathonflat and fast
- Price
- $38.10-$64.60
Sat, May 15, 2027 · 7:00 AM · Boise, ID
YMCA Famous Idaho Potato Marathon & Fun Runs
5K10KHalf MarathonMarathonflat and fast
- Price
- $33.63-$97.68
Sat, May 29, 2027 · 7:00 AM · Coeur d'Alene, ID
CDA Marathon
1M5K10KHalf MarathonMarathonCertified course · per organizer
- Price
- Free-$107
Fri, Jun 4, 2027 · 10:00 AM · Sandpoint, ID
Sandpoint Marathon
5K10KHalf MarathonMarathonflat and fast
- Price
- $48.70-$186.50
Sat, Sep 4, 2027 · 6:15 AM · Pocatello, ID
27th Annual Pocatello Marathon
0.2M1M5K10KHalf MarathonMarathon
- Price
- $10.54-$64.60
- Field size
- 1,078 · based on the organizer's entry cap
Browse related categories
All Half MarathonsAll races in IdahoHalf Marathons in TexasHalf Marathons in FloridaHalf Marathons in CaliforniaHalf Marathons in GeorgiaHalf Marathons in MissouriHalf Marathons in New JerseyHalf Marathons in ColoradoHalf Marathons in WashingtonHalf Marathons in North CarolinaHalf Marathons in New York5Ks in Idaho10Ks in IdahoMarathons in Idaho