50K ultramarathons in Ontario, Canada in 2026

Point-to-point 51.8km route along the Toronto Bruce Trail with mixed terrain, technical rocky sections, groomed paths, short steep hills, and 800m elevation

Technical Blue Mountain Resort trails with a 700-foot Niagara Escarpment ascent, rock-hopping, creek crossings, and narrow forest paths

Dense forest routes spanning lakes, streams, and hilly terrain in Haliburton Forest, featuring 100 mile, 50 mile, and 50K distances

Three-day stage race on Bruce Peninsula featuring rugged climbs, ultra-distance routes, and varied terrain across dramatic autumn landscapes.

Remote Laurentian Mountains course with a 12.5 km loop of technical trails, steep hills, rocky sections, creek crossings, and changing directions each lap

50 km trail course at Nature's Harmony Ecolodge, wooded routes with a 4-hour 25 km cutoff and 8-hour limit, support and eco-friendly facilities along the way

Single-track woodland trails of Thunder Bay, 50km course through forested landscapes and varied terrain, community atmosphere, finisher medals

Fast, rolling 5km dirt loops around Christie Lake with relay or solo 50km options, community atmosphere, and scenic conservation area setting

Trail race featuring 25k and 50k routes around Fanshawe Reservoir, highlighting scenic natural surroundings and varied terrain

Scenic two-loop 50km course through Hilton Falls Conservation Area, blending fast groomed trails with rugged Bruce and Beaver Dam Trail segments

50km challenge and 6-hour race on picturesque Batawa trails, featuring varied distances for runners and walkers of all levels