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35KHalf Marathon10K5K

Knickerbocker Canyon Trail Run

Auburn, California
Days to go
172
Registerinsidetrail.com

At a glance

Date
Mar 27, 2027
Location
Auburn, California
Distances
35K, Half Marathon, 10K, 5K
Registration
See ultrasignup.com
Official site
insidetrail.com
Listed from
RunSignUp
Last checked
Oct 4, 2026

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About this race

Participants of this race will run along the historic Western States trail, out to “No Hands Bridge”, then tackle one of the toughest climbs in the area: the dreaded K2 training hill. The 5K and 10K courses include killer single-track trails along the banks and canyons of the American River; the Half Marathon and 35K cross “No Hands Bridge”, up K2 then towards Cool, CA. If you’re in it for the long haul, you will head back down to the River the ascend the the long series of switchbacks, known as the “Dam Hill”. The course is varied and far from monotonous, allowing runners to push past discomfort and focus on what’s enjoyable.

Park Information: American River Canyon Overlook Park, Auburn SRA

Start Times:

35K & Half – 8:30 AM

10K – 9:00 AM

5K – 9:00 AM

Key dates

Race day

Mar 27, 2027

172d

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Tune-up races

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Straight-line distance

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  • Sunset & Cider Trail Races

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  • Cool-Auburn Pub Run

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  • Heart of Cool Trail Run

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