FOURmidable
FOURmidable is a trail running and running race on February 13, 2027 in Auburn, CA, with entry fees from $40 to $80.
- Date
- February 13, 2027 (115 days to go)
- Location
- 855 Pacific ave, Auburn, CA
- Price
- $40–$80
- Sports
- Trail RunningRunning
From the Organizer
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 fee—please obey posted local signs).
Events
Typical Conditions
It's too far out for a forecast, so here's what weather on this date is normally like in the area. A race day forecast will replace this as race week approaches.
Typical High
59°
Typical Low
40°
Chance of Rain
37%
Based on US Climate Normals data from Auburn, 2 mi from the venue.
About Auburn, CA
City Elevation
1,509 ft
Nearest Airport
SMF
Sacramento International Airport · 32 mi
Time Zone
Pacific Time
From Endurance Grid
Line up lodging and travel early to lock in your race weekend.
Race Location
What Are You
Waiting For?
Every finish line starts with a single decision. Claim your spot at FOURmidable, put it on the calendar, and turn “someday” into a start date.
115
Days to train
- Race
- FOURmidable
- Date
- February 13, 2027
- Location
- 855 Pacific ave, Auburn, CA
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About These Sports
This race spans more than one sport — here’s a guide to each, so you can understand what’s involved and decide if it’s the right fit. For course distances, logistics, and race-day specifics, always defer to the race organizer’s event page.
Trail Running
Running off-road — dirt, singletrack, and mountain paths — from 5Ks to ultras. The terrain makes for an exciting twist and adventure in your running journey.
Running
From 5K to marathon, running races are an accessible entry point into endurance sport. There's a distance for every fitness level and a community at every start line.
More Trail Running races near Auburn, CA
Frequently Asked Questions
What is the FOURmidable?
When and where is the FOURmidable?
How do I register for the FOURmidable?
FOURmidable
Feb 13, 2027