Ultra Running Hub
Trail 100mi
New Years One Day 100 Mi Run
250 days away
161km Distance
8.1 Grit Score
Hardcore Level
Vertical Intensity 0 D+/km
This course is relatively flat and fast. Ideal for PB attempts.
The Aid Station
Course-specific beta from the community
This is a fast & flat 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
Each lap is 1.03 miles (USATF certificated No. CA23033TEB) around Cottonwood Lake in Hellyer Park along the asphalt path. The course is relatively flat.