Ultra Running Hub Trail 100mi
Sonoma Fall Classic
127 days away
161km Distance
3,200m Elevation
10 Grit Score
Elite/Extreme Level
Vertical Intensity 20 D+/km
Moderate undulations. Requires consistent effort across varying grades.
The Aid Station
Course-specific beta from the community
This is a rolling course. Expect fast, runnable sections where rhythm is key.
With trail terrain, choose a shoe with moderate cushioning for optimal performance.
For 100km+ efforts, prioritize real food at aid stations to prevent palate fatigue.
Course Intelligence
OPENFREE MAP (LIBRE)Course Notes
Location: Lake Sonoma, Healdsburg, CA. Surface: 86% single-track trails and 9% dirt roads, 5% pavement.