Half Marathons Found In Ontario
View all ↓Half Marathons in Ontario 2025 - 2026
The most comprehensive list of Half Marathons in and near Ontario in 2025 - 2026. Find your perfect race!
Ontario’s half marathon season offers something for just about every kind of runner—whether you’re chasing a new PB, building toward a full marathon, or just ticking off a new distance. From big-city routes with thousands of participants to smaller races that wind through lakeside trails and local neighbourhoods, the 21.1-kilometre challenge shows up in all kinds of settings.
Most courses are on paved paths or urban trails, with regular water stations and a strong community vibe. In the bigger cities, public transit usually makes getting to the start line simple.
The Golden Horseshoe sees a steady stream of events throughout the year, while Toronto and Ottawa anchor the calendar with some of the province’s most well-known races. Further north, expect quieter courses with big views, especially where the Canadian Shield comes into play.
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Race Calendar: Half Marathons Found In Ontario