Race calendar · May 2027 · Michigan
Every Half Marathon in Michigan in May 2027, all 5 of them, sorted by date. Dates, entry fees, finish-time stats from past results, and start-line maps.
What the field actually runs
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 26, 2026.
When in May
Half marathons 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 largest field of any May Half Marathon in Michigan, from the most recent published results.
Across the 3 of these May half marathons with published results from past editions, the median finisher ran 2:07:13, and the median winning time was 1:20:55. So anything under 2:07:13 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.
The median one finished 74 runners, across the 3 of these May half marathons 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 3:09:36.
Yes, one race around Michigan gets you off the pavement: 1 is a trail race.
