When in May are most 5K races held?
The busiest weekend in Arizona is May 1 and May 2, with 4 of them, 2 of those on Saturday, May 1. Every one of them is on a Saturday or a Sunday.
Race calendar · May 2027 · Arizona
5K Races in Arizona in May 2027
Every 5K in Arizona in May 2027, all 10 of them, sorted by date. Dates, entry fees, finish-time stats from past results, and start-line maps.
What the field actually runs
May 5K Races, By the Numbers
40:59Median finish time
17:03Median winning time
365Median field size
6May 5K races with published results
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 Nov 12, 2026.
When in May
The May Race Weekends
5K races are not spread evenly across May. 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 May 5K in Arizona, from the most recent published results.
Arizona 5K Races by City in May
All 5K Runs in Arizona in May
10 total Sat, May 1, 2027Super Mom 5K/10K/Half Marathon - Phoenix Phoenix, AZFrom $20Details Sat, May 1, 2027Luau 5K, 10K & 13.1M at Phoenix, AZ (18) Phoenix, AZFrom $30Details Sun, May 2, 2027Dr. Gann's Diet of Hope Cinco de Mayo 10K, 5K & FitKidz Mile Tucson, AZRegistration opens Dec 13From $35Details Sun, May 2, 2027Super Mom 5K/10K/Half Marathon - Tucson Tucson, AZRegistration opens Jan 8, 2027From $30Details Sat, May 8, 2027#RUNMARANA Mother's Day 5k and Kid’s Free FUN Run Marana, AZFrom $35Details Sat, May 8, 2027Run for Chocolate 5k/10k/13.1 PHOENIX Phoenix, AZFrom $30Register Sun, May 16, 2027Tucson 5000 Tucson, AZRegistration opens Jan 9, 2027From $25Details Sat, May 29, 2027TMC Meet Me Downtown 5k Night Run and Festival of Miles Tucson, AZFrom $10Details Sat, May 29, 2027Maricopa Memorial Day 5K Maricopa, AZFrom $40Details Sat, May 29, 2027SuperHeroes Run PHOENIX Phoenix, AZFrom $30Register
Common Questions About Running a May 5K in Arizona
What is a good 5K time?
Across the 6 of these May 5K races with published results from past editions, the median finisher ran 40:59, and the median winning time was 17:03. So anything under 40:59 puts you in the faster half of a typical field. That is the middle of these RunSignup fields, walkers and charity entrants included, not a national average.
How big is a typical May 5K field?
The median one finished 365 runners, across the 6 of these May 5K races with published results from past editions. Most are far smaller than the big-city events people picture, which means less crowding at the start and a friendlier field, with a last recorded finisher at 1:16:57.