Monarch Ultra

SEP
19
2026
A 10 km chip timed race and a 1 km kids run at Millennium Park in Peterborough paired with a festival highlighting monarch butterfly conservation. The event is cup free and features costume prizes and community activities.
Sat 19 Sep 2026
10 kilometers

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Monarch Ultra 10km and Monarch Festival

The event combines a 10 km race, a 1 km kids run, and a festival focused on monarch butterfly conservation. It takes place at Millennium Park in downtown Peterborough and includes educational booths and community activities.

The 10 km course is an out-and-back route along the Rotary Trail and TransCanada Trail beside the Otonabee River and is described as relatively flat. A water station is located at the 5 km turnaround. This is a cup free event, so participants should bring their own vessel for filling at the start and water station.

The 10 km race is chip timed. Awards are provided to the top three male and female finishers in the 10 km, and prizes are offered for the most unique monarch-themed costumes in both the 10 km and 1 km races. Additional prizes will be given for the greatest fundraising totals. Registration swag includes a race bib, a monarch-inspired neck gaiter for 10 km finishers, a custom medal for 1 km finishers, milkweed seeds, chip timing, post-race refreshments, and an after-party.

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. Strollers and animals are prohibited on the race 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.

10 km
Monarch Ultra 10km
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