When in March are most half marathons held?
The busiest weekend in Michigan is March 6 and March 7, with 3 of them, 2 of those on Saturday, March 6. Every one of them is on a Saturday or a Sunday.
Race calendar · March 2027 · Michigan
Every Half Marathon in Michigan in March 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 Oct 18, 2026.
When in March
Half marathons are not spread evenly across March. 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 March half marathons that stand out on the numbers: the biggest field, and the longest unbroken run of editions.
The busiest weekend in Michigan is March 6 and March 7, with 3 of them, 2 of those on Saturday, March 6. Every one of them is on a Saturday or a Sunday.
Across the 3 of these March half marathons with published results from past editions, the median finisher ran 2:00:45, and the median winning time was 1:03:19. So anything under 2:00:45 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 93 runners, across the 3 of these March 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 3:28:54.