When in October are most 10K races held?
The busiest weekend in Arizona is October 31 and November 1, with 5 10K races on those two days, and the single busiest day is Saturday, October 31 with 5. Every one of them is on a Saturday or a Sunday.
Race calendar · October 2026 · Arizona
October 2026 10K Races in Arizona
Every 10K in Arizona in October 2026, all 10 of them, sorted by date. Dates, entry fees, finish-time stats from past results, and start-line maps.
10 10K races in October 2026
When in October
The October Race Weekends
10K races do not spread evenly across October. The busiest weekend is October 31 and November 1, with 5 of them.
By the numbers
The Biggest and Longest-Running
The October 10K races that stand out on the numbers: the biggest field, and the longest unbroken run of editions.
October 10K Races by City
Soonest 10K Races in October
10 total Sat, Oct 3, 2026Flagstaff Marathon Flagstaff, AZFrom $90Details Sat, Oct 3, 2026Move.Function.Live Race Series Holbrook, AZFrom $25Details Sat, Oct 10, 2026Cookie Run 5K/10K/13.1 PHOENIX Phoenix, AZFrom $30Register Sat, Oct 10, 2026Coffee Lovers Run 5K/10K/13.1 PHOENIX Phoenix, AZFrom $30Register Sat, Oct 17, 2026Haunted 5K,10K & 13.1M at Tucson, AZ (42) Tucson, AZFrom $30Register Sat, Oct 31, 2026Salute to Veterans 5K/10K/Half Marathon - Tucson Tucson, AZFrom $15Details Sat, Oct 31, 2026PB&J Fuel Run 5K/10K/13.1 PHOENIX Phoenix, AZFrom $30Register Sat, Oct 31, 2026Medal Madness 5K & 10K at Phoenix, AZ (44) Phoenix, AZFrom $30Register Sat, Oct 31, 2026Halloween Trick or Trot Run 5K/10K/13.1 PHOENIX Phoenix, AZFrom $30Register Sat, Oct 31, 2026Oracle Run Oracle, AZFrom $45Register
Common Questions About Running an October 10K in Arizona
How much does an October 10K cost to enter?
The typical entry is $30, with paid entries running from $15 up to $90. Entry fees climb as race day gets closer, so the same race is usually cheapest the week it opens.
Are there trail 10K races in Arizona in October?
Yes, one race around Arizona gets you off the pavement: 1 is a trail race. Surfaces are not always published, so it is worth checking a specific race before you register.
10K Races in Other Months
September and November sit either side of October, which is where most people look next when a date does not fit.