UltraSignup
Official entry
Entries openVerified
Verified Sun, 11 Oct 2026
Enter officiallyEventsFind this location on a map
USARunningTrail10K · 10 km / 6.2 mi6HHalf · 21.1 km / 13.1 mi
Dirty December Trail Run
San Diego, California, Sycamore Canyon parking and trails · USA
Next race day
Sun, 20 Dec 2026
4 distances · see start times below
About Dirty December Trail Run
Dirty December Trail Run is a running event in San Diego, California, Sycamore Canyon parking and trails, United States. Recorded disciplines include 10K, 6H, half marathon. The listed surface is trail. The listed organiser is Dirty Feet Productions. The next listed date is 20 December 2026. Check the organiser's information for entry and race-day arrangements.
Dates, starts & entry
Times are local to the race. Select the entry route for your distance.
- Official entry
Half · 21.1 km / 13.1 mi
Sun, 20 Dec 2026
Starts 09:00 PST
Entries open
Current organiser and entry confirm Sunday December 20, 2026, replacing the earlier calendar date. Nominal trail distance. All races must finish by 15:30.
Edition source - Official entry
Marathon · 42.2 km / 26.2 mi
Sun, 20 Dec 2026
Starts 08:30 PST
Entries open
Current organiser and entry confirm Sunday December 20, 2026, replacing the earlier calendar date. Nominal trail distance. All races must finish by 15:30.
Edition source - Official entry
10K · 10 km / 6.2 mi
Sun, 20 Dec 2026
Starts 09:00 PST
Entries open
Current organiser and entry confirm Sunday December 20, 2026, replacing the earlier calendar date. Nominal trail distance. All races must finish by 15:30.
Edition source - Official entry
6H
Sun, 20 Dec 2026
Starts 09:00 PST
Entries open
Current organiser and entry confirm Sunday December 20, 2026, replacing the earlier calendar date. Six-hour hill climb on repeated Cardiac Hill loops; total distance varies.
Edition source
Location & race day
Listed venue / area
Sycamore Canyon parking and trails, San Diego, CaliforniaUSA
Confirm the exact start line, parking and arrival instructions with the organiser. A listed town or postcode may cover a wider area.
About the race
Holiday trail races at Sycamore Canyon, with three fixed distances and a timed hill-climb challenge.
- Surface:
- Trail
- Organiser:
- Dirty Feet Productions
Ways to enter
Compare the listed booking routes. Verified links show when they were checked.
Sun, 20 Dec 2026
Third-party prices, booking fees, allocations and refund terms can differ. Confirm the final details with the provider before paying.
Results
Public-figure or athlete-approved ATHRECS results, plus verified organiser links.
No verified results links have been added yet.
Past races
None listed yet.
More running nearby
Sun
8
Nov
2026
Sri Chinmoy San Diego 6-Hour Race
San Diego, CaliforniaUSA
Miramar Reservoir, Scripps Lake Drive; west-end dam staging area
6H· Road
A six-hour running race on the paved five-mile circuit around Lake Miramar, with chip-counted laps and additional mileage credited near the finish.
Fri
23
Jul
2027
South Bay 24 Hour
San Diego, CaliforniaUSA
2931 Palm Ave
12H Day / 12H Night / 24H· Mixed
Timed endurance races on a mixed-surface loop at Montgomery Waller Park.
Fri
16
Oct
2026
Pony Express Trail Run
Faust, UtahUSA
Lookout Campground, west of Faust
100mi / 50mi· Trail
Fifty-mile and one-hundred-mile races on the historic Pony Express dirt road route in western Utah.
Fri
16
Oct
2026
Mines of Spain 100
Dubuque, IowaUSA
Louis Murphy Park
100K / 100mi· Trail
One-hundred-mile and one-hundred-kilometre races on the trails of the Mines of Spain Recreation Area.
Sat
17
Oct
2026
Sat
17
Oct
2026
Sat
17
Oct
2026