Half Marathons in Michigan 2026 | Upcoming Races & Dates | My Next Race

There are 15 half marathons in Michigan scheduled for 2026. The next is the RLCA Bike-A-Thon in Vestaburg on May 23. Michigan half marathons run primarily May through March.

Shi-Tri

Sun, May 17 · Owosso, MI Owosso

2-3 person relay teamIndividual

From $60 Open

RLCA Bike-A-Thon

Sat, May 23 · Vestaburg, MI Vestaburg

RLCA Bike-A-Thon (Paying Participant)RLCA Bike-A-Thon (T-shirt Only)

From $25 Open

M22 Challenge

Sat, Jun 13 · Empire, MI Empire

M22 Challenge

From $205 Open

AuSable Valley Triathlon

Sat, Jun 13 · Mio, MI Mio

AuSable Valley Triathlon

From $35 Open

South Haven Triathlon

Sat, Jun 20 · South Haven, MI South Haven

Sprint Aquabike - Waterslide StartSprint DuathlonSprint Tri Relay - Waterslide Start (2 People) +2

From $49.67 Open 20 spots left

2026 Brew-to-Brew Trail Day Fundraiser

Sat, Jun 27 · Beulah, MI Beulah

4th Annual Brew-to-Brew Trail Day Fundraiser

From $50 Open

Team Running Lab Half / Full Marathon Training Group

Mon, Jun 29 · Brighton, MI Brighton

Team Running Lab Half Marathon TrainingTeam Running Lab Marathon Training

From $0 Open

Anchor Bay Triathlon

Sat, Jul 11 · New Baltimore, MI New Baltimore

Triathlon RelayTriathlon Individual

From $100 Open Closing Soon

TriWalloon

Sat, Jul 18 · Walloon Lake, MI Walloon Lake

Sprint AquabikeSprint RelaySprint Triathlon +3

From $100 Open Closing Soon 3 spots left

Dragon Trails Triathlon (Sprint)

Sun, Sep 13 · Lake Orion, MI Lake Orion

Dragon Trails Triathlon (Sprint)Dragon Trails Triathlon Relay (Sprint)

From $100 Open

The Dirty Mitten Gravel Triathlon

Sun, Sep 20 · Middleville, MI Middleville

The Shorty Aquabike (Sprint)The Shorty Triathlon (Sprint)The Shorty Relay - 2 person (Sprint) +8

From $46.33 Open 2 spots left

University of Michigan Health-West Grand Rapids Marathon

Sun, Oct 18 · Grand Rapids, MI Grand Rapids

Half MarathonMarathonHandcycle - Marathon +3

From $47.5 Open

myTEAM TRIUMPH West MI - GR Marathon -- Captain & Angel Registration

Sun, Oct 18 · Grand Rapids, MI Grand Rapids

Angel Half MarathonAngel Full Marathon

From $25 Open 20 spots left

Fort Custer Norwegian Foot March 2026

Sat, Oct 24 · Augusta, MI Augusta

Norwegian Foot March

From $60 Open

2027 Gaylord All Outdoors Tri 45 Winter Triathlon

Sat, Mar 6 · frederic, MI frederic

2027 Duathlon Bike/Run2026 Duathlon Bike/Run2027 Tri 45 Solo +3

From $50 Closed