SudburyROCKS!!! Marathon 2025

This page is kept as a past race archive for the May 25, 2025 edition in Sudbury, Ontario. Use the links below to find upcoming races in the same area or distance category. You can also browse the 2025 race calendar.

The SudburyROCKS!!! Marathon is Northern Ontario’s largest competitive running event, celebrating its 20th anniversary in 2025. It offers a variety of races including a full marathon, half marathon, 10K, 5K, and a 1K kids' race, welcoming runners and walkers of all abilities in a festive community atmosphere.

Proceeds support the Health Sciences North Foundation, benefiting local cancer care initiatives. Participants enjoy a scenic, fast course with flat to rolling terrain and a certified Boston qualifier marathon loop set in vibrant Sudbury.

* Marathon course is a dual loop through downtown Sudbury, New Sudbury, and Minnow Lake * Terrain: flat to rolling with a few small hills, considered fast * Road surface for all events * Certified Boston qualifier course (ON-2014-019-BDC) * Aid stations available along the course

• Annual 20th anniversary in 2025
• Multiple race distances: Marathon, Half Marathon, 10K, 5K, Family Run/Walk, and Kids' race
• Certified Boston qualifier marathon course
• Supports Health Sciences North Foundation's cancer care initiatives
• Over 1,600 participants and 300+ volunteers annually
• Commemorative medals for finishers
• Family friendly event with stroller-friendly races (with safety guidelines)