Lake Sonoma Marathon is a 42.0 km ultra trail of Lake Sonoma 2025 in Healdsburg, United States. The race starts on April 12, 2025. The course climbs 1560 m+ and descends 1768 m−, between a low point of 70 m and a high point of 333 m. By gradient, 42% of the distance is uphill, 35% downhill and 23% flat. The longest climb runs 1.8 km at an average 3.2% grade (58 m of vertical). The longest descent runs 1.4 km at 3.4% (47 m of vertical). Surface: 87% trail and 6% road. Flat-equivalent effort: 52.9 FlatKM.
This page has the interactive elevation profile, gradient matrix, pacing and nutrition planner and weather climatology for Lake Sonoma Marathon.
Other distances of Lake Sonoma 2025Lake Sonoma Lake Sonoma 50 (80.0 km)
