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 on the Iroquoia Section of the Bruce Trail, running from Burlington to Dundas and finishing at the Dundas Valley Conservation Area. The event is sanctioned by Athletics Ontario and registration is limited to 180 participants.
Two distances are offered:
- 10 km
- 25 km
Participants are provided a bus ride from the finish area to each start; participant parking at Dundas Valley Conservation Area is included in the race fee. Both courses follow the Main Trail marked with white blazes; additional markings appear only on the first and last 250 m and on the 2.5 km road section in Dundas.
The 25 km course is generally net downhill with about 600 m of elevation gain and 720 m of elevation loss and includes rocky sections, a tunnel under Hwy 6, climbs along the escarpment, views near Borer's Falls, and a final approach past Stacey Meadow Pond to Stacey Meadow Pavilion. The 10 km course is roughly 75% trail and 25% road, with about 185 m of gain and 265 m of loss; its largest descent is a technical section where speed is not advised.
Aid stations: three for the 25 km (7.5 km, 15 km, 20 km) and one for the 10 km (around 5 km). The event is cup-less so runners must carry a collapsible cup or bottle. Poles are permitted. The race kit includes the bus ride, a pair of socks, a neck gator, a sticker, a small custom race bib, aid station access, a finisher medal, and $10 from each registration is donated to the Iroquoia Bruce Trail Club. La Sportiva will provide a demo fleet and shoe giveaways and THN Labs will supply gels in race kits and at aid stations. Visit the organization's website for the most recent information.
