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Ultra Marathons found in Michigan in Summer
View all ↓Ultra Marathons in Michigan in Summer 2025
Find A Race is the US's favourite event listings site. Check out our list of Summer 2025 Ultra Marathons in Michigan below.
Race Calendar: Ultra Marathons found in Summer
πBoosted
Michigan Titanium
Grand Rapids, Michigan
10 Aug 25 - 11 Aug 25
Free - $631.45
πBoosted
The FRED Running Relays - 25 Mile - 50 Mile - 100 Mile - 200 Mile
Rockford, Michigan
11 Jul 25 - 12 Jul 25
$48.70 - $101.70
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100 Miles a Month
Royal Oak, Michigan
01 Jun 25 - 01 Oct 25
Free - $11.60
Grand Rapids Triathlon
Ada, Michigan
07 Jun 25 - 08 Jun 25
$60.80 - $389.95
Summer Trail Fest Ultra, Half Marathon & 5 Miler
Laingsburg, Michigan
14 Jun 25
Free - $123.90
The FRED Running Relays - 25 Mile - 50 Mile - 100 Mile - 200 Mile
Rockford, Michigan
11 Jul 25 - 12 Jul 25
$48.70 - $101.70
TridelSol Olympic, Sprint & Super Sprint Triathlon, Duathlon, Aquabike, Relay & Swim Only Event
Middleville, Michigan
20 Jul 25
$32.80 - $181.20
Marsh Madness
South Rockwood, Michigan
01 Aug 25 - 02 Aug 25
Free
Michigan Titanium
Grand Rapids, Michigan
10 Aug 25 - 11 Aug 25
Free - $631.45
Copper Harbor Trails Fest
Copper Harbor, Michigan
30 Aug 25 - 31 Aug 25
Free - $64.60
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