The Monarch Ultra 10km returns to Peterborough, Ontario on September 19th, combining conservation efforts with a scenic run through Millennium Park. This is the fourth edition of the event and promises participants of all ages an enjoyable experience along the TransCanada Trail and Rotary Trail in East City Peterborough.
10K Monarch Race
10km • Start: 10:00:00 • Fee: CA$77.77
1K Kids Fun Run
1km • Start: 10:00:00 • Fee: CA$23.83
On race morning at 7am, runners can expect to start their journey from Millennium Park. The atmosphere will be lively, with families gathering for a day filled with outdoor activities and festival fun. Participants can enjoy views of the park's natural beauty as they run along the designated route that loops through the area before returning to the starting point.
Since its inception in 2023, the Monarch Ultra has grown from a small community event into one celebrated by many. This year marks four years running with over 500 participants expected. The race supports local conservation efforts and education programs aimed at preserving the natural habitat of monarch butterflies—a significant cause for this annual gathering.
The course venue offers a mix of flat terrain along paved paths, providing an easy run for beginners while still challenging seasoned runners. The route includes notable features such as sections of the TransCanada Trail and Rotary Trail, which offer picturesque scenery ideal for capturing memories or simply enjoying nature.
At 7am on race day, participants will gather at Millennium Park to begin their journey. The course layout ensures a smooth start with no significant elevation changes; however, runners should prepare for steady walking during the final stretch as they approach the finish line. There are no aid stations along this particular route but water bottles and porta-johns will be available.
The weather on race day is expected to range between 12°C to 23°C with a humidity level of around 76%. Runners should anticipate feeling comfortable temperatures, though they might experience some light wind. Given the typical September climate in Peterborough, participants are advised to dress appropriately for conditions that can feel brisk.
The race offers two distances: the main event is the 10km Monarch Race and there's also a fun run for kids covering just 1km. Fees for adults are CA$77.77 while children pay CA$23.83; registration details will be sent via email, so check your spam folder after signing up at https://raceroster.com/events/2026/117030/monarch-ultra-10km.
Bibs can be picked up the day before the race from 5pm to 8pm at Millennium Park. Participants need to bring a photo ID for verification and ensure they are wearing appropriate running gear, including reflective clothing if needed due to early morning starts.
The start location is Millennium Park in downtown Peterborough. The event welcomes runners of all ages, with specific age requirements provided; first-timers should arrive prepared by checking the race packet which includes bibs, timing chips, and other essential materials.
The Monarch Ultra 10km has become a beloved tradition for locals and visitors alike due to its unique blend of environmental conservation efforts and community spirit. With scenic routes, family-friendly atmosphere, and support for monarch butterflies, this event offers more than just an enjoyable run—it’s a chance to contribute positively to the local environment while celebrating fall in Peterborough.
