Half Marathons in Michigan
Michigan has 29 upcoming half marathons scheduled for 2026. Most of the calendar falls in the warmer months: 22 of 29 races (76%) take place between May and September, with July (9 events) the busiest month. No single city dominates the calendar. Lansing leads with 3 races, followed by Brighton (2), Ann Arbor (2), and Springfield (1). The remaining 72% of the calendar is spread across smaller cities.
Half marathons by month in Michigan
Jul (9) · Sep (8) · Oct (5) · Aug (4) · Nov (2) · Jun (1)
Showing 24 of 29
Running
2026 Summer Beyond Half and Full Marathon Training Program (Kalamazoo)
July 11, 2026
Portage, MI
Running
Heatwave Half Marathon - Ann Arbor
Ann Arbor, MI
Running
Heatwave Half Marathon - Ann Arbor
July 14, 2026
Ann Arbor, MI
Running
Detroit Women's Half Marathon, 10K, and 5K: Women Run the D Run/Walk
September 20, 2026
Detroit, MI
Running
2026 Run Iron Mountain Half Marathon | 1OK | 5K | 1 Mile Fun Run
September 26, 2026
Iron Mountain, MI
Running
Trinity Health Probility Ann Arbor Marathon: 5K • 10K • Half-Marathon • Full Marathon • Marathon Relay • Half-Marathon Walk
October 3, 2026
Ann Arbor, MI
Frequently asked questions
How long is a half marathon?▾
A half marathon is 13.1 miles (21.1 kilometers). It is one of the most popular race distances in the US, attracting over 2 million finishers annually. Browse half marathons on RACE to find one near you.
How should I train for my first half marathon?▾
Most beginner training plans are 10-12 weeks long and gradually build your weekly mileage. A typical plan includes 3-4 runs per week with one long run that peaks around 10-11 miles before race day.
What is a good half marathon time?▾
The average US half marathon finish time is about 2 hours 10 minutes. Beginners often aim for under 2:30, while competitive runners target sub-1:45. Focus on finishing strong rather than a specific pace for your first race.
What are the biggest half marathons in the US?▾
The largest include the United Airlines NYC Half, RBC Brooklyn Half, Disney Princess Half Marathon, and the Rock 'n' Roll series events in Las Vegas, Nashville, and San Diego. You can find all of these on RACE.