The Lost Valley Trail Race 2026

Experience the breathtaking Lost Valley Trail Race, set for 2026 and sanctioned by Athletics Ontario. This unique point-to-point trail race takes runners on an exhilarating journey from Burlington to Dundas along the iconic Bruce Trail's Iroquoia Section.
Participants can choose between a challenging 25km or a more manageable 10km course. Both routes offer stunning views, rugged terrain, and memorable landscapes that will keep you engaged throughout your run. The race is designed with runners in mind—no loops mean varied scenery from start to finish.
For the 25km event, participants park at Dundas Valley Conservation Area before boarding a bus ride to Cityview Park in Burlington or arranging their own transport. As you navigate through Smokey Hollow and Grindstone Creek, prepare for steep climbs and rocky sections that will test your endurance. The course offers several highlights, including an exhilarating tunnel under Highway 6 and sweeping views from the edge of the Niagara Escarpment.
The 10km race also begins at Dundas Valley Conservation Area but takes runners through a different part of the trail system. This shorter distance still promises a rewarding experience with its initial flat section followed by challenging climbs, including one steep descent near Sydenham Hill that will require careful navigation to ensure safety and enjoyment.
Both races follow marked trails with white blazes for easy tracking, except in specific sections where additional markings are provided as extra aids. The race organizers have limited the number of participants to 180 to maintain a community-oriented vibe, ensuring an intimate atmosphere for all runners.
Race day at Dundas Valley Conservation Area promises more than just running. Participants and spectators can explore the conservation area's trails or visit the Trail Centre for additional activities. A variety of swag is included in your registration fee: Happy Trails Racing socks, a Neck Gator sticker, parking, a custom race bib, aid stations with typical ultra-running supplies like snacks and electrolytes, and a finisher’s medal.
Aid stations are strategically placed along both courses to ensure runners stay fueled. While the 25km course has three aid points at 7.5km, 15km, and 20km, the 10km route offers support around its midpoint. For those looking for post-race refreshment, there's no shortage of dining options in Dundas.
Happy Trails Racing is committed to providing a seamless experience with their refund policy allowing participants up to 30 days before the race to secure full refunds or transfers without penalties. This event promises an unforgettable adventure through nature’s beauty and challenges, making it perfect for seasoned trail runners and newcomers alike.
Parking at the Dundas Valley Conservation Area is included in your registration fee, ensuring a hassle-free start to your journey. Enjoy the scenic route, challenge yourself on steep climbs, and savor the satisfaction of completing this community-focused race.