When in May are most 5K races held?
The busiest weekend in Wisconsin is May 8 and May 9, with 4 5K races on those two days, and the single busiest day is Saturday, May 1 with 2. Every one of them is on a Saturday or a Sunday.
Race calendar · May 2027 · Wisconsin
May 2027 5K Races in Wisconsin
Every 5K in Wisconsin in May 2027, all 13 of them, sorted by date. Dates, entry fees, finish-time stats from past results, and start-line maps.
13 5K races in May 2027
What the field actually runs
May 5K Races, By the Numbers
34:40Median finish time
17:25Median winning time
363Median 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 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 4 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
13 total Sat, May 1, 2027Lake Monona 20K & 5K Monona, WIFrom $30Details Sat, May 1, 2027NAMI Oshkosh 5K Oshkosh, WIFrom $35Details Sat, May 8, 2027Lodi Optimist ONE MOTHER OF A RUN Lodi, WIFrom $5Details Sat, May 8, 2027Sole Burner 5K Walk-Run Appleton, WIFrom $30Details Sun, May 9, 2027Milwaukee Mother's Day Half Marathon, 10K, & 5K Milwaukee, WIFrom $13Details Sun, May 9, 2027Hometown Half Marathon/5K/10K - Milwaukee Milwaukee, WIFrom $22Details Sat, May 15, 2027Syttende Mai Classic Run/Walk Stoughton, WIRegistration opens Oct 1From $15Details Sat, May 15, 2027Waushara Run For Hope 5k & 1Mile Run/Walk Wautoma, WIFrom $15Details Sun, May 16, 2027EPIC Marathon and Running Festival Green Bay, WIFrom $30Details Sat, May 22, 2027Miles for the Mind Milwaukee, WIFrom $35Details Sat, May 29, 2027Logan's Laps for Love Hartford, WIRegistration opens Apr 30, 2027From $35Details Sat, May 29, 2027Cedarburg Half Marathon Cedarburg, WIFrom $20Details
Common Questions About Running a May 5K in Wisconsin
When should I sign up for a May 5K?
As early as you can. 7 of these May 5K races already have a price increase on the calendar, and 11 are open for entry right now. Another 2 have published an opening date and have not opened yet.
How much does a May 5K cost to enter?
The typical entry is $30, with paid entries running from $5 up to $40. 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 6 of these May 5K races with published results from past editions, the median finisher ran 34:40, and the median winning time was 17:25. So anything under 34:40 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 363 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 1:01:34.
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.