When should I sign up for a May 5K?
As early as you can. 4 of these May 5K races already have a price increase on the calendar, and 3 are open for entry right now. Another 2 have published an opening date and have not opened yet.
Race calendar · May 2027 · Arizona
May 2027 5K Races in Arizona
Every 5K in Arizona in May 2027, all 5 of them, sorted by date. Dates, entry fees, finish-time stats from past results, and start-line maps.
5 5K races in May 2027
What the field actually runs
May 5K Races, By the Numbers
39:57Median finish time
16:57Median winning time
365Median field size
3May 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 Sep 22, 2026.
When in May
The May Race Weekends
5K races do not spread evenly across May. The busiest weekend is May 8 and May 9, with 2 of them.
By the numbers
The Biggest and Longest-Running
The May 5K races that stand out on the numbers: the biggest field, and the longest unbroken run of editions.
May 5K Races by City
Soonest 5K Races in May
5 total Sun, May 2, 2027Dr. Gann's Diet of Hope Cinco de Mayo 10K, 5K & FitKidz Mile Tucson, AZRegistration opens Dec 13From $35Details 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, 2027Maricopa Memorial Day 5K Maricopa, AZFrom $35Details
Common Questions About Running a May 5K in Arizona
How much does a May 5K cost to enter?
The typical entry is $35, with paid entries running from $25 up to $35. Entry fees climb as race day gets closer, so the same race is usually cheapest the week it opens.
What is a good 5K time?
Across the 3 of these May 5K races with published results from past editions, the median finisher ran 39:57, and the median winning time was 16:57. So anything under 39:57 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 3 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.
5K Races in Other Months
April and June sit either side of May, which is where most people look next when a date does not fit.