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Built on bad decisions in Boulder, CO.

Yuba Gold Trail Runs 50K

Draft Listing
  1. Skybreaker Racing
  2. 2025 Edition

Technical gold rush singletrack through Malakoff Diggins and the South Yuba River canyon

Directions
This event took place on October 05, 2025

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All trail races in California→
October 05, 2025
Sunday 8:00am PDT start
North Bloomfield, CA
United States
31.1 miles
Loop Course
7,700 ft
Elevation Gain
Open Registration
No lottery
No Service Requirement
Does not require trail or volunteer work
No Qualifier
No qualifier race required
Challenging
Some ultra experience recommended
May Sell Out
Can fill up — register early to be safe
Links
WebsiteInstagramFacebook
2019
Established
63%
Finish Rate

What Makes It Great

The flagship distance of the Yuba Gold Trail Runs threads through the heart of California gold rush country. Starting from historic North Bloomfield, the course descends the technical Humbug Trail past ventilation shafts from the Malakoff Diggins hydraulic mining era, follows Humbug Creek to the South Fork Yuba River, then winds along the forested singletrack of South Yuba Trail before grinding up Missouri Bar Trail and a series of Tahoe National Forest fire roads back to the finish. With 6,000 feet of gain and technical terrain throughout, it lives up to its motto: not your mama's trail race.

Difficulty

Intermediate
6/10

Some ultra experience recommended

Technical Terrain
Steep Climbing
Technical Descent
Sun Exposure

Race Highlights

Hydraulic mining history on course
Descends Humbug Trail past ventilation shafts from Malakoff Diggins, once outputting 100,000 gallons of water per day
South Yuba River singletrack
Forested South Yuba Trail hugs the beautiful South Fork of the Yuba River through the heart of gold country
4,700 ft max elevation
Traverses the Sierra Nevada foothills from rugged Tahoe National Forest fire roads to river-bottom singletrack
Technical and punishing terrain
Humbug Trail and Missouri Bar climb combine for a ~63% historical finish rate on a 50K

Finish Awards

Finisher Medal
Beautiful full-color finisher medal. Top 3 male and female finishers per distance also receive awards.

Yuba Gold Trail Runs 50K

North Bloomfield, CA, United StatesOctober 05, 2025

October 05, 2025
Course map for Yuba Gold Trail Runs 50K
DistDistance31.1 mi
GainElevation Gain7,700 ft
LimitCutoff9 h
Steep ClimbingTechnical DescentSun Exposure

Entry Timeline

Race DayOctober 05, 2025

Lottery

This event uses open registration - no lottery entry required.

Qualifier

This event does not require a qualifier for entry.

Service Requirement

This race does not have a service requirement for entry.
31.1 mi
Distance
Loop
Route
9h
Cutoff Time
3,012 ft
Average Elevation
7,700 ft
Total Ascent
7,700 ft
Total Descent
4,724 ft
High Point
2,133 ft
Low Point
Course map
Launch Course Explorer

Aid Stations

LocationMileElevation
Missouri Bar Aid
Aid Station
8.33,471 ft
Relief Aid
Aid Station
15.43,937 ft
Poorman Creek Aid
Aid Station
19.72,625 ft

Sign in to see cutoffs, crew access, drop bags, and services for every aid station.

No Dogs Allowed
On-Site Camping Available

Chute Hill Campground at Malakoff Diggins State Historic Park is a short drive from the start/finish — first come, first served, running water, no showers. Rentable cabins are also available within the historic North Bloomfield townsite on a first-come, first-served basis.

Crew Access Points

Pacer Rules

No Pacers Allowed

Crew Rules

No Crew Allowed
Weather
Heat Training Recommended

October in the Sierra Nevada foothills can bring warm afternoon temperatures, particularly in the South Yuba River canyon below 2,000 ft.

Rapid Weather Changes

Early fall weather in the Northern Sierra can shift quickly; afternoon thunderstorms are possible in the higher Tahoe National Forest sections.

Gear Rules

Trekking poles allowed

Required Gear

No required gear specified

Recommended Gear

No recommended gear specified

Featured Videos

Yuba Gold Trail Runs 2024 Teaser
Yuba Gold Trail Runs 2024 Teaser
Skybreaker Racing•2024

Race Reports

Lost AF in the forest — aka Yuba Gold 50k
By Mel Newton • 2019

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