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Ultra Marathons found in Michigan in Summer

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Ultra Marathons in Michigan in Summer 2026

Find A Race is the US's favourite event listings site. Check out our list of Summer 2026 Ultra Marathons in Michigan below.

Race Calendar: Ultra Marathons found in Summer

🚀Boosted

Grand Rapids Triathlon

Ada, Michigan
Sun 07 Jun 26
$51.61 - $368.95
🚀Boosted

The FRED Running Relays - 25 Mile - 50 Mile - 100 Mile - 200 Mile

Rockford, Michigan
Fri 10 Jul 26 - Sat 11 Jul 26
$43.40 - $91.10
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Grand Rapids Triathlon

Ada, Michigan
Sun 07 Jun 26
$51.61 - $368.95

Summer Trail Fest Ultra 50K, Half Marathon, & 5 Miler

Laingsburg, Michigan
Sat 13 Jun 26
Free - $121.78

The FRED Running Relays - 25 Mile - 50 Mile - 100 Mile - 200 Mile

Rockford, Michigan
Fri 10 Jul 26 - Sat 11 Jul 26
$43.40 - $91.10

Michigan Titanium

Grand Rapids, Michigan
Sun 16 Aug 26
$58.68 - $631.45
Showing 1-4 of 4 results