The Lost Valley Trail Race

Dundas, Canada • 24 Oct 2026

Event overview

The Lost Valley Trail Race is a point-to-point trail event that finishes at Dundas Valley Conservation Area in Dundas, Ontario. The courses run along the Main Trail of the Bruce Trail, using the Iroquoia Section and permanent white blazes; participants must be able to follow trail blazes. The event is sanctioned by Athletics Ontario. La Sportiva will be present with a demo shoe fleet and will give away two pairs of shoes at the event.

Courses and logistics

  • 10 km
  • 25 km

Both distances are point-to-point. The 25 km starts at Cityview Park in Burlington and follows single-track along the Niagara Escarpment, Smokey Hollow, Grindstone Creek, and sections near Borer's Falls before descending toward Dundas. The 25 km has about 600 m of elevation gain and 720 m of elevation loss. The 10 km starts at Rock Chapel Conservation Area and is approximately 75% trail and 25% road, with about 185 m gain and 265 m loss. Both courses include a roughly 2.5 km road section in Dundas that will have additional marking flags. Only the first 250 m, last 250 m, and the 2.5 km road section will have extra markings.

Participants should park at Dundas Valley Conservation Area, where parking is included for entrants, and travel to start locations by event bus or private transport. Aid stations: three on the 25 km (7.5 km, 15 km, 20 km) and one on the 10 km (around 5 km). The race is cup-less; bring a collapsible cup or bottle. Registration details include a race packet with socks, neck gator, sticker, small bib, medal, photos, aid stations, and a donation to the Iroquoia Bruce Trail Club. Refunds are available as a 100% race credit up to 30 days before the event; bib transfers are allowed up to 5 days before. Visit the organization's website for the most recent information.

Race information

25 km
25k
10 km
10k
Visit the organization's website for the most recent information.
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