Monarch Ultra
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Monarch Ultra 10km in Peterborough, ON
The fourth annual Monarch Festival & Race takes place on September 19, 2026 at Millennium Park in downtown Peterborough, Ontario. The event pairs a road and trail run with a festival focused on monarch butterfly conservation.
Distances offered:
- 10 km
- 1 km
The 10 km route is an out and back along the Rotary Trail and the TransCanada Trail beside the Otonabee River. A water station is located at the 5 km turnaround. This is a cup free event, so participants must bring their own vessel for refilling. The 10 km is chip timed. Prizes are awarded to the top three finishers for each gender and for the most unique monarch themed costumes. Additional prizes are given for highest fundraising totals.
The 1 km Kids Fun Run is for children under 13 and is limited to 50 spots; finishers receive a hand painted medal and a snack.
Registration includes a race bib, a monarch inspired neck gaiter for 10 km finishers, milkweed seeds, chip timing, post race refreshments, and access to the festival after the race. Strollers and animals are prohibited on the course. No refunds are offered; if the event is cancelled, participants will be transferred to the 2027 Monarch Race. Visit the organization's website for the most recent information.
