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Ultra Marathons Found In Ontario

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Ultra Marathons in Ontario 2025 - 2026

The most comprehensive list of Ultra Marathons in and near Ontario in 2025 - 2026. Find your perfect race!

Race Calendar: Ultra Marathons Found In Ontario

Phoenix Trail Races

London, ON
18 Oct 25
$85.76

Wise Raven Trail Race

Waterloo, ON
18 Oct 25
$50.81 - $239.63

The Beav Trail Race 2025

Milton, ON
01 Nov 25
$83.94 - $127.51

Fat Ass Trail Run

Quinte West, ON
16 Nov 25
$51.26 - $83.94
Showing 41-44 of 44 results
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