Lost Soul Ultra Marathon 2026

Lost Soul Ultra Marathon 2026 returns to Lethbridge, AB on September 11-12, 2026, with trail ultras built around the Oldman River valley. The event brings a prairie landscape of coulees, hills, and long climbs into a compact weekend format.

Runners can choose from 100 Mile, 100K, and 50K options. It’s a loop-based race with a strong local identity and a course that asks for steady pacing more than speed.

For runners looking at Alberta trail races, this one stands out for its terrain, its repeated climbs, and the way the valley shapes the day from start to finish.

For runners comparing local trail options, it fits alongside other trail races in Lethbridge.

The course uses a 50 km loop through the Oldman River valley coulees, with roughly 1,250 m of elevation change per lap. The 100 Mile and 100K races add an extra 9 km loop; the 50K completes one lap.

Start times are 8:00 AM for the 100 Mile, 8:30 AM for the 100K, and 7:00 AM for the 50K. The 100 Mile and 100K begin on Friday, and the 50K starts on Saturday morning.

• Trail ultra weekend in Lethbridge’s Oldman River valley
• 100 Mile, 100K, and 50K race options
• Looped course with about 1,250 m of elevation change per lap
• Coulees, hills, and long prairie climbs
• Friday starts for the 100 Mile and 100K; Saturday start for the 50K
• Oldman River valley setting with a strong southern Alberta identity