Monster of Mazinaw Trail Race

SEP
19
2026
Trail races of 43 km, 30 km and 10 km at Bon Echo Provincial Park on September 19, 2026. Routes include technical single track and long back country sections with limited aid so runners should be self reliant.
Sat 19 Sep 2026
43 kilometers 30 kilometers 10 kilometers

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Monster of Mazinaw Trail Race 2026

Monster of Mazinaw Trail Race takes place at Bon Echo Provincial Park in Cloyne, Ontario on September 19, 2026. The event offers courses across varied terrain from wide groomed trails to technical rocky single track. Large parts of the 30k and 43k routes run on back-country trails with rocks, roots and steep ascents and descents; these sections can be slippery when wet.

The distances offered:

  • 43 km trail
  • 30 km trail
  • 10 km trail (course may be closer to 11 km)

Runners should be prepared to be self reliant on some stretches and to travel 12 to 14 km without aid, and possibly up to 17 km between aid stations. Aid stations will provide water, electrolyte drink, PB & J and sweet and salty snacks. The races are cup-less so participants must bring a collapsible cup or bottle. Registration includes a race tee, bib, a custom finisher medal for finishers, and food and drinks at aid stations. Park admission is not included in the race fee.

Entry is capped at 250 participants. Organizers list partnerships with footwear and nutrition vendors who will supply demos and gels; the gels provided contain maple syrup, tahini, sea salt and rowanberry extract. Bon Echo offers camping, yurts and roofed accommodations with Ontario Parks reservations opening five months in advance. Visit the organization's website for the most recent information.

43 km
43k Trail Race
30 km
30k Trail Race
10 km
10k Trail Race
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