The Lost Valley Trail Race
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The Lost Valley Trail Race 2026
The Lost Valley Trail Race is a point-to-point trail event that finishes at Dundas Valley Conservation Area in Dundas, Ontario. The event is sanctioned by Athletics Ontario and limited to 180 participants for 2026. The course follows the Iroquoia Section of the Bruce Trail and uses the main trail marked with white blazes; additional flags are placed for the first and last 250 m and for a 2.5 km road section in Dundas.
Two race distances are offered:
- 25 km
- 10 km
Both distances are point-to-point. Bus transport from the Dundas Valley Conservation Area finish area to each race start is included in the race fee. The 25 km route starts near Burlington and includes single-track, rocky sections, a tunnel under Hwy 6, sections along the escarpment, and roughly 600 m of elevation gain with about 720 m of elevation loss. The 10 km route is about 75% trail and 25% road, is net downhill with about 185 m gain and 265 m loss, and contains a technical descent where runners should be cautious.
Aid stations: three on the 25 km course at about 7.5 km, 15 km, and 20 km; one on the 10 km course around 5 km. The event is cup-less; participants must bring a collapsible cup or bottle. Poles are permitted.
Race inclusion: parking at Dundas Valley Conservation Area, a bus ride to the start, a pair of socks, a neck gator, a sticker, a small custom bib, aid station access, and a finisher medal. Ten dollars from each registration goes to the Iroquoia Bruce Trail Club. A local nutrition partner supplies gels made from maple syrup, tahini, sea salt, and rowanberry extract. Post-race meals are not included and spectators pay park entrance fees. Visit the organization's website for the most recent information.
