FOURmidable
- Date Sat 13th February 2027
- Time 8:00AM EST
- Location Auburn, California
- Price $43.40 - $85.80
- Races 4 races
- Distances Ultra
Event summary
Get ready for an exhilarating day of trail running at the FOURmidable Trail Run on Saturday, February 13, 2027, in beautiful Auburn, Placer County, California. Renowned as one of Northern California's premier endurance events, this thrilling race invites participants to tackle the stunning canyon trails that make Auburn the endurance capital of the world. With distances to suit every level of runner, including a challenging 50K, a 35K, a Half Marathon+ (13.2 miles), and a 13K, you'll experience the breathtaking scenery and infamous climbs that give this event its name.
Starting bright and early at 8:00 AM for the 50K, followed by subsequent waves for the other distances, runners will navigate less than a mile of pavement, immersing themselves in the beauty of singletrack trails and river canyon views. Prepare for significant elevation gains, particularly on the iconic climbs like Cardiac Hill and K2! Every participant can look forward to fully stocked aid stations, custom swag, and a post-race celebration at Overlook Park, where camaraderie and delicious food await. Join us for an unforgettable day of adventure and achievement at the FOURmidable Trail Run!
Starting bright and early at 8:00 AM for the 50K, followed by subsequent waves for the other distances, runners will navigate less than a mile of pavement, immersing themselves in the beauty of singletrack trails and river canyon views. Prepare for significant elevation gains, particularly on the iconic climbs like Cardiac Hill and K2! Every participant can look forward to fully stocked aid stations, custom swag, and a post-race celebration at Overlook Park, where camaraderie and delicious food await. Join us for an unforgettable day of adventure and achievement at the FOURmidable Trail Run!
Organiser's Description
FOURMIDABLE TRAIL RUN (50K | 35K | HALF MARATHON+ | 13K)
PRESENTED BY SINGLETRACK RUNNING
LOCATION: Auburn Overlook Park 855 Pacific Ave, Auburn, CA 95603
Are you ready to test your grit on one of Northern California's premier trail challenges? Hosted in the endurance capital of the world, the FOURmidable Trail Run takes runners through the rugged, scenic canyon trails of the Auburn and Cool areas.
Featuring less than one mile of pavement across all distances, this event treats you to singletrack trails, river canyon views, and the infamous climbs that give the race its name.
THE FOUR CLIMBS
The signature 50K course packs over 6,000 feet of cumulative elevation gain, headlined by the "FOUR" formidable climbs:
* Cardiac Hill
* K2 (aka Training Hill)
* Knickerbocker (Old Auburn Dam Site)
* Overlook Hill
Whether you take on the full 50K ultra or choose the 35K, Half Marathon+ (13.2 mi), or 13K, you will experience the best singletrack Auburn has to offer.
RACE SCHEDULE & START TIMES
ALL DISTANCES RUN ON RACE DAY.
DISTANCE
START TIME
50K
8:00 AM
35K
8:15 AM
Half Marathon+ (13.2 mi)
8:30 AM
13K
9:00 AM
WHAT'S INCLUDED
* CUSTOM SWAG & BIBS: SingleTrack Running takes pride in quality, practical swag designed to celebrate your finish without cluttering your closet.
* FULLY STOCKED AID STATIONS: Staffed by experienced trail volunteers ready to help refuel and hydrate you quickly. Stations include water, electrolyte drink, gels, soda, boiled potatoes, candy, salt tabs, and more.
* POST-RACE CELEBRATION: Finish at Overlook Park with plenty of hot food, drinks, and trail camaraderie.
IMPORTANT EVENT LOGISTICS
1. CUPLESS RACING
In an effort to keep trails clean and minimize waste, FOURmidable is a 100% cupless event.
* Every runner must carry a handheld bottle, hydration pack, or reusable collapsible cup.
* Paper cups will not be provided at aid stations. Collapsible cups will be available for purchase on-site, or you can bring your own.
2. PACKET PICK-UP
* EARLY PICK-UP (RECOMMENDED): Friday (day before the race) from 3:00 PM 6:00 PM at the Start/Finish area (Auburn Overlook Park).
* RACE MORNING: Available at Overlook Park starting 1 hour prior to your wave start. Note: Any swag/bibs not claimed by race start will be gifted to race-day volunteers.
3. PARKING & VEHICLE CAMPING
* RUNNER PARKING: Primary parking at Overlook Park is reserved for registered runners. Overflow parking is available along Pacific Ave and at the nearby staging area (staging area parking requires a paid feeplease obey posted local signs).
PRESENTED BY SINGLETRACK RUNNING
LOCATION: Auburn Overlook Park 855 Pacific Ave, Auburn, CA 95603
Are you ready to test your grit on one of Northern California's premier trail challenges? Hosted in the endurance capital of the world, the FOURmidable Trail Run takes runners through the rugged, scenic canyon trails of the Auburn and Cool areas.
Featuring less than one mile of pavement across all distances, this event treats you to singletrack trails, river canyon views, and the infamous climbs that give the race its name.
THE FOUR CLIMBS
The signature 50K course packs over 6,000 feet of cumulative elevation gain, headlined by the "FOUR" formidable climbs:
* Cardiac Hill
* K2 (aka Training Hill)
* Knickerbocker (Old Auburn Dam Site)
* Overlook Hill
Whether you take on the full 50K ultra or choose the 35K, Half Marathon+ (13.2 mi), or 13K, you will experience the best singletrack Auburn has to offer.
RACE SCHEDULE & START TIMES
ALL DISTANCES RUN ON RACE DAY.
DISTANCE
START TIME
50K
8:00 AM
35K
8:15 AM
Half Marathon+ (13.2 mi)
8:30 AM
13K
9:00 AM
WHAT'S INCLUDED
* CUSTOM SWAG & BIBS: SingleTrack Running takes pride in quality, practical swag designed to celebrate your finish without cluttering your closet.
* FULLY STOCKED AID STATIONS: Staffed by experienced trail volunteers ready to help refuel and hydrate you quickly. Stations include water, electrolyte drink, gels, soda, boiled potatoes, candy, salt tabs, and more.
* POST-RACE CELEBRATION: Finish at Overlook Park with plenty of hot food, drinks, and trail camaraderie.
IMPORTANT EVENT LOGISTICS
1. CUPLESS RACING
In an effort to keep trails clean and minimize waste, FOURmidable is a 100% cupless event.
* Every runner must carry a handheld bottle, hydration pack, or reusable collapsible cup.
* Paper cups will not be provided at aid stations. Collapsible cups will be available for purchase on-site, or you can bring your own.
2. PACKET PICK-UP
* EARLY PICK-UP (RECOMMENDED): Friday (day before the race) from 3:00 PM 6:00 PM at the Start/Finish area (Auburn Overlook Park).
* RACE MORNING: Available at Overlook Park starting 1 hour prior to your wave start. Note: Any swag/bibs not claimed by race start will be gifted to race-day volunteers.
3. PARKING & VEHICLE CAMPING
* RUNNER PARKING: Primary parking at Overlook Park is reserved for registered runners. Overflow parking is available along Pacific Ave and at the nearby staging area (staging area parking requires a paid feeplease obey posted local signs).
Races
-
FOURmidable 50k
Incl. $5.80 Fee & T-Shirt
Sat 13th February 2027 (8:00AM EST)
$85.80
-
FOURmidable 35k
Incl. $4.60 Fee & T-Shirt
Sat 13th February 2027 (8:15AM EST)
$64.60
-
FOURmidable 13k
Incl. $3.40 Fee & T-Shirt
Sat 13th February 2027 (8:45AM EST)
$43.40
-
FOURmidable Half Marathon +
Incl. $4.00 Fee & T-Shirt
Sat 13th February 2027 (8:30AM EST)
$54.00
Reviews
Done this event?
First-hand event reviews from people who have been there, done that and got the breathable T-shirt, really help everyone choose their next event.
Add a reviewLocation
855 Pacific ave, Auburn, 95603, CA, United States
FOURmidable
