When are most half marathons held in Boise?
October is the busiest month for Half Marathon races in Boise, with 2 of the 6. If you are flexible on the date, that is the quickest way to narrow things down.
Idaho · Half Marathon
2026-2027 Half Marathons in Boise, Idaho
Every upcoming Half Marathon around Boise, with start times, entry fees, finish-time stats from past editions, start-line maps, and the local run clubs to train with.
6 upcoming half marathons found · 4 with finish-time stats
By the numbers
The Biggest and Longest-Running
The Boise races that stand out on the numbers: the biggest field, and the longest unbroken run of editions.
Sat, Oct 17, 2026Idaho Running Day Boise, IDFrom $115Details Sat, Oct 24, 2026YMCA Halloween Run Boise, IDFrom $70Details Sat, Nov 14, 2026Boise Half Marathon Boise, IDFrom $95Details Sat, Apr 17, 2027Race to Robie Creek® Boise, IDRegistration opens Feb 15, 2027From $75Details Sat, May 15, 2027YMCA Famous Idaho Potato Marathon & Fun Runs Boise, IDFrom $70Details Sun, Aug 22, 2027Popsicle 5K/10K/Half - Boise Boise, IDRegistration opens Jul 1, 2027From $40Details
How we calculate these stats: RunSesh calculates these figures from the most recent published results of past editions, sourced from RunSignup. We show aggregates only: field size, winning and median times, and the cutoff. We never publish individual finisher tables. Last updated Oct 17, 2026.
Common Questions About Running a Half Marathon in Boise
Are Boise half marathons beginner-friendly?
Yes, for the most part. Across the 4 Half Marathon races in Boise with published results, the typical median finish is around 2:07:32, which means half of every one of those fields came in slower than that. Recreational runners and walk-runners are the bulk of these fields, not the exception.
Where can I train for a Half Marathon in Boise?
Browse Boise run clubs on RunSesh to find a training group at your pace.