When is race season in Flagstaff?
August is the busiest month for races in Flagstaff, with 2 of the 3. If you are flexible on the date, that is the quickest way to narrow things down.
Arizona · Race calendar
Running Races in Flagstaff, Arizona
Upcoming running races in and near Flagstaff, Arizona - 5Ks, 10Ks, half marathons and more, with dates, pricing, finish-time stats, start-line maps, and local run clubs to train with.
3 upcoming races
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 Jul 27, 2026.
Common Questions About Racing in Flagstaff
How early should I register for a race in Flagstaff?
2 of the 3 races in Flagstaff already have a price increase scheduled, so entry gets more expensive the longer you leave it. Race pricing almost always steps up as the date approaches, and signing up early is usually the cheapest option.
Where can I train for a race in Flagstaff?
Browse Flagstaff run clubs on RunSesh to find a training group at your pace.
Are there trail races near Flagstaff?
Yes, 2 races around Flagstaff get you off the pavement: 2 are trail races. Surfaces are not always published, so it is worth checking a specific race before you register.