The 2026 ENDURrun Prelim

This page is kept as a past race archive for the Jul 13, 2026 edition in Waterloo, Ontario. Use the links below to find upcoming races in the same area or distance category.

The 2026 ENDURrun Prelim is a unique six-day, six-stage running event held in Waterloo, Ontario, and its surrounding communities. Designed as a preparatory challenge for the more demanding ENDURrun events later in the year, the Prelim offers runners a comprehensive test of endurance, speed, and versatility. Participants tackle a variety of race formats, including road, cross-country, trail, and track, over a total distance of 60 kilometers.

This event is renowned for its supportive community atmosphere, well-organized stages, and diverse terrain. Each stage is carefully crafted to challenge different aspects of a runner’s skill set, from technical trail running to fast-paced track racing. The Prelim is ideal for athletes seeking to experience the spirit of multi-day racing, build confidence, and prepare for longer endurance events. With leader bibs, finisher medals, and awards for top performers, the ENDURrun Prelim is both a competitive and celebratory experience.

The ENDURrun Prelim features six stages, each with distinct terrain and elevation profiles:

• Stage 1 (10 KM Road Race): Two loops on a paved, relatively flat course at RIM Park, Waterloo.
• Stage 2 (7.5 KM Time Trial): Out-and-back on mixed crushed gravel and paved surfaces at Riverbluffs Park, Cambridge.
• Stage 3 (8 KM Cross Country): Three loops on grass and trail with moderate elevation at Bechtel Park, Waterloo.
• Stage 4 (10.4 KM Trail Run): Four loops on technical hiking trails with significant elevation at Baden Hills, Wilmot.
• Stage 5 (3 KM Track Race): 7.5 laps on a standard rubberized track at St. David Catholic Secondary School, Waterloo.
• Stage 6 (21.1 KM Half Marathon): Three loops on a paved course with rolling terrain at RIM Park, Waterloo.

Courses range from flat and fast to hilly and technical, providing a comprehensive test of running ability.

• Six unique stages over six days, totaling 60 KM
• Diverse race formats: road, time trial, cross-country, trail, and track
• Community-focused event with experienced volunteers and well-marked courses
• Comprehensive support: aid stations, refreshments, and post-race amenities
• Awards: leader bibs, finisher medals, and top-three overall/Masters medals
• Ideal preparation for the full ENDURrun series