Is May a good month for a 10K?
May sits in the middle of the year for the 10K, carrying 346 against 507 in November and 132 in October. Enough to choose from, and easier to get into than the races at the peak of the season.
Race calendar · May 2027
10K Races in May 2027
346 10K races across the US in May 2027, sorted by date. Which weekends are busiest, what the fields actually run, entry fees, and where each one starts.
May 10Ks straddle two different racing climates depending on where you line up. In the South and across inland lowlands, heat and humidity are already a real factor by race morning, while the Pacific Northwest, the Rockies, and the upper Midwest often hold onto mild, comfortable conditions well into the month.
The 6.2-mile distance slots naturally here as a fitness check after a spring build, before summer heat makes hard efforts harder. Many May 10Ks are part of local festivals, charity events, or multi-distance weekends, so the atmosphere tends toward community rather than competition.
Memorial Day weekend closes the month and draws its own cluster of races, giving runners who missed the earlier weekends one more option. Registration is already open on most of them, so locking in a spot early is straightforward.
What the field actually runs
May 10K Races, By the Numbers
1:05:07Median finish time
41:56Median winning time
45Median field size
206May 10K 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
10K 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 and Longest-Running
The May 10K races that stand out on the numbers: the biggest field, and the longest unbroken run of editions.
May 10K Races by State
Florida 49Texas 35California 30North Carolina 18Missouri 17Michigan 16Washington 16Georgia 14Illinois 14Ohio 9Virginia 9Iowa 8Pennsylvania 8Colorado 7Kentucky 7Tennessee 7Arizona 6Arkansas 6Idaho 6New York 6Oklahoma 6Alabama 5Maryland 5New Jersey 5Nebraska 4Delaware 3Louisiana 3Minnesota 3Oregon 3South Carolina 3Utah 3Wisconsin 3Nevada 2Alaska 1Connecticut 1District of Columbia 1Hawaii 1Indiana 1Kansas 1Maine 1Mississippi 1New Mexico 1Rhode Island 1
10K Runs by City in May
The Next 10K Runs in May
346 total Sat, May 1, 2027Toad Suck Daze 10k/5k Run and Tadpole Trot Conway, ARFrom $35Details Sat, May 1, 2027Sledgehammer Beach Run N Topsail Beach, NCFrom $25Details Sat, May 1, 2027Tulip Time Run Holland, MIFrom $35Details Sat, May 1, 2027Kirby Derby Monticello, ILRegistration opens Jan 1, 2027From $25Details Sat, May 1, 2027Knock On Wood Trail Run/Hike - 13.1 & 10k Marietta, SCFrom $35Details Sat, May 1, 2027SUP & RUN 5K Sarasota, FLRegistration opens Nov 29From $75Details Sat, May 1, 2027Tacos N' Ritas Run Newark, DEFrom $30Details Sat, May 1, 2027IronHorse - USATF Certified & Sanctioned Riceville, IAFrom $25Details Sat, May 1, 2027Byron Rocks 5k & 10k - Run it. Walk it. Ruck it. Byron, ILFrom $50Details Sat, May 1, 2027May The Course Be With You Greensboro, NCFrom $45Details Sat, May 1, 2027May the Fourth Race Half Marathon, 10K, 5K Farmington, UTFrom $40Details Sat, May 1, 2027Des Moines Women's Half Marathon, 10K & 5K Des Moines, IAFrom $60Details
Common Questions About Running a May 10K
What should I wear for a May 10K?
Dress in light, moisture-wicking layers. In the South and Sun Belt, assume it will feel warmer than the thermometer suggests once humidity is added, and skip the long sleeves. In the northern states or at elevation, mornings can still be cool at the start, so a thin outer layer you can tie off is worth bringing.
How should I pace a May 10K if conditions are warm?
Start conservatively in the first mile, especially in humid climates where early effort can compound fatigue quickly over 6.2 miles. Hydrate at every aid station rather than waiting until you feel thirsty. If the course is shaded, save a stronger push for those sections.
Is a May 10K a good tune-up race before summer?
It works well as a benchmark if you have been building since late winter and want a time marker before heat interrupts quality training. The caveat is that warm-weather results do not always reflect your full fitness, so treat a slower time as a heat-adjusted effort rather than a ceiling.
Is it worth traveling for a May 10K?
The calendar is spread widely across the country, so you can usually find an option within a short drive. If you are destination-racing, lean toward northern or mountain venues where reliable racing weather is more likely, and check the event's history to confirm it runs alongside a festival or multi-distance field worth the trip.
When in May are most 10K races held?
The busiest weekend is May 8 and May 9, with 92 of them, 77 of those on Saturday, May 8. Another 12 fall on a weekday, which is worth knowing if you are traveling for one.
What is a good 10K time?
Across the 206 of these May 10K races with published results from past editions, the median finisher ran 1:05:07, and the median winning time was 41:56. So anything under 1:05:07 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 10K field?
The median one finished 45 runners, across the 206 of these May 10K 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 1:46:06.
Which states have the most May 10K races?
Florida has 49, Texas has 35, California has 30, North Carolina has 18, Missouri has 17. If you are willing to travel, those are the states where a May weekend gives you the most to choose from.
Are there trail 10K races in May?
Yes, 12 races around the United States get you off the pavement: 9 are trail races, and 3 mix road and trail.