When in May are most 5K races held?
The busiest weekend in Maine is May 1 and May 2, with 3 5K races on those two days, and the single busiest day is Sunday, May 16 with 3. Every one of them is on a Saturday or a Sunday.
Race calendar · May 2027 · Maine
May 2027 5K Races in Maine
Every 5K in Maine in May 2027, all 8 of them, sorted by date. Dates, entry fees, finish-time stats from past results, and start-line maps.
8 5K races in May 2027
What the field actually runs
May 5K Races, By the Numbers
34:03Median finish time
17:39Median winning time
258Median field size
4May 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 1 and May 2, with 3 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
8 total Sat, May 1, 2027Dash for the Derby 5K Portland, MEFrom $28Details Sun, May 2, 2027Salty's 5K & 10K Double Nubble York Beach, MEFrom $25Details Sun, May 2, 2027Mental Health Matters 5k Cumberland Center, MEFrom $25Details Sun, May 9, 2027Portland Sea Dogs Mother's Day 5K Portland, MERegistration opens Nov 1From $27Details Sun, May 9, 2027Jennie's Run Bath, MEFrom $25Details Sun, May 16, 2027Casey's Run Waterboro, MERegistration opens Jan 18, 2027From $20Details Sun, May 16, 2027Bath at Play's Spring Colors 5k and Half-k Color Run Bath, MERegistration opens Feb 28, 2027From $5Details Sun, May 16, 2027Student Senate Color Run (postponed to fall) Augusta, MERegistration opens Mar 31, 2027FreeDetails
Common Questions About Running a May 5K in Maine
When should I sign up for a May 5K?
As early as you can. 6 of these May 5K races already have a price increase on the calendar, and 4 are open for entry right now. Another 4 have published an opening date and have not opened yet.
How much does a May 5K cost to enter?
The typical entry is $25, with paid entries running from $5 up to $28, and 1 that are free to enter. 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 4 of these May 5K races with published results from past editions, the median finisher ran 34:03, and the median winning time was 17:39. So anything under 34:03 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 258 runners, across the 4 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 1:05:40.
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.