When in October are most 5K races held?
The busiest weekend in Michigan is October 2 and October 3, with 5 of them, 3 of those on Saturday, October 2. One more falls on a weekday, which is worth knowing if you are traveling for it.
Race calendar · October 2027 · Michigan
5K Races in Michigan in October 2027
Every 5K in Michigan in October 2027, all 16 of them, sorted by date. Dates, entry fees, finish-time stats from past results, and start-line maps.
What the field actually runs
October 5K Races, By the Numbers
36:13Median finish time
17:53Median winning time
197Median field size
11October 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 Nov 12, 2026.
When in October
The October Race Weekends
5K races are not spread evenly across October. 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 Field
The largest field of any October 5K in Michigan, from the most recent published results.
Michigan 5K Races by City in October
All 5K Runs in Michigan in October
16 total Sat, Oct 2, 2027Sleeping Bear Marathon, Half Marathon & 5K Empire, MIRegistration opens Jan 1, 2027From $40Details Sat, Oct 2, 2027The Lucky Pumpkin 5K Run/Walk Davison, MIFrom $35Details Sat, Oct 2, 2027Bear Lake Ultra Lapeer, MIFrom $135Details Sun, Oct 3, 2027Trinity Health Probility Ann Arbor Marathon Ann Arbor, MIFrom $35Details Sun, Oct 3, 2027Jordan DeMay 5k/10k run/walk starts Marquette, MIRegistration opens Jan 1, 2027From $30Details Sat, Oct 9, 2027Stout Stumble 5K Pentwater, MIRegistration opens Jan 11, 2027From $30Details Sat, Oct 9, 2027Spooky Sprint - Grand Rapids Grand Rapids, MIFrom $32Details Sun, Oct 17, 2027University of Michigan Health-West Grand Rapids Marathon Grand Rapids, MIFrom $50Details Sun, Oct 17, 2027The Barn Run Williamston, MIFrom $30Details Sat, Oct 23, 2027Capital City Dia de Los Muertos 5k Run/Walk/Roll Lansing, MIRegistration opens May 31, 2027From $40Details Fri, Oct 29, 2027OaktoberFAST 5K Three Oaks, MIFrom $40Details Sat, Oct 30, 2027HALLOWEEN HUSTLE 10K Harrison Township, MIRegistration opens Nov 30From $35Details Sat, Oct 30, 2027Spooky Sprint - Ann Arbor Ann Arbor, MIFrom $30Details Sat, Oct 30, 2027ALGER HEIGHTS HALLOWEEN 5K Grand Rapids, MIRegistration opens Jan 31, 2027From $25Details Sun, Oct 31, 2027Spooky Sprint - Lansing Lansing, MIFrom $31Details Sun, Oct 31, 2027Candles & Calacas Día de los Muertos 5K Fun Run/Walk East Lansing, MIRegistration opens Sep 9, 2027From $25Details
Common Questions About Running an October 5K in Michigan
What is a good 5K time?
Across the 11 of these October 5K races with published results from past editions, the median finisher ran 36:13, and the median winning time was 17:53. So anything under 36:13 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.
How big is a typical October 5K field?
The median one finished 197 runners, across the 11 of these October 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 1:10:14.
Are there trail 5K races in Michigan in October?
Yes, 2 races around Michigan get you off the pavement: 2 are trail races.