When in December are most 10K races held?
The busiest weekend in Arizona is December 12 and December 13, with 4 of them, 3 of those on Saturday, December 12. One more falls on a weekday, which is worth knowing if you are traveling for it.
Race calendar · December 2026 · Arizona
10K Races in Arizona in December 2026
Every 10K in Arizona in December 2026, all 10 of them, sorted by date. Dates, entry fees, finish-time stats from past results, and start-line maps.
When in December
The December Race Weekends
10K races are not spread evenly across December. Here is how the calendar actually falls, weekend by weekend, which is the part worth knowing before you book a trip or plan a taper around one.
By the numbers
The Biggest Field
The largest field of any December 10K in Arizona, from the most recent published results.
Arizona 10K Races by City in December
All 10K Runs in Arizona in December
10 total Sat, Dec 5, 2026Holiday 5K, 10K & 13.1M at Phoenix, AZ (49) Phoenix, AZFrom $45Register Sat, Dec 12, 2026Run for Breast Cancer 5K/10K/13.1 PHOENIX Phoenix, AZFrom $50Register Sat, Dec 12, 2026Sunrise Marathon 5K/10K/13.1 PHOENIX Phoenix, AZFrom $50Register Sat, Dec 12, 2026Ak-Chin Masik Tas 10K/5K Run/Walk Maricopa, AZFreeRegister Sun, Dec 13, 2026Santa Hustle Glendale Glendale, AZFrom $80Details Sat, Dec 19, 2026Holiday 5K,10K & 13.1M at Tucson, AZ (51) Tucson, AZFrom $45Register Sat, Dec 26, 2026Holiday 5K & 10K at Phoenix, AZ (52) Phoenix, AZFrom $45Register Sat, Dec 26, 2026A Merry Christmas Run 5K/10K/13.1 PHOENIX Phoenix, AZFrom $55Register Sat, Dec 26, 2026New Year's Run 5K/10K/13.1 PHOENIX Phoenix, AZFrom $55Register Thu, Dec 31, 2026#RUNMARANA Egg Nog Jog and Kid’s Free FUN Run Marana, AZFrom $35Details