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OC Dirty Trail Fest

25K Duathlon . 15K Trail Run . 15K Mountain Bike Race

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April 21st, 2018

Congratulations 2017 Winners!

1st Male
Markus Roggen, 1:44:09
1st Female
Katheryn Lockwood, 1:46:25
1st Relay
Longnecks, 1:54:43
1st Male
15K Trail Run
Jose Lopez, 1:34:19
1st Female
15K Trail Run
Rebecca Roane, 1:58:38


The OC Dirty Trail Fest consits of mostly fireroad and some single track trail. There are a few sections of pavement. The bike portion is hilly but not overly technical, making this race a great option for new duathletes. However, the hills and terrain will also provide a challenge for even experienced duathletes. We provide safety, fun, and a beautiful and challenging course you are sure to not forget!

Date: April 21st 2018
Start Times:
15K Run - 8:00AM
Duathlon - 9:00AM
15K Bike - 9:30AM

Checkin Opens: 700AM
Elevation Gain (Duathlon): 1,600' (Run Total), 1,900' (Bike Total)
Elevation Gain (15k Bike & 15k Run): 1,900'
Cutoff times: Must finish by 1:30PM

2018 Rates are as follows (Duathlon):

Now - Nov 30, 2017: $60 ($105 per team) (early bird)
Nov 1 - Mar 20, 2018: $75 ($120 per team)
Mar 21 - Race Day: $90 ($135 per team) Late Reg

2018 Rates are as follows (Bike/Run):

Now - Nov 30, 2017: $50 (early bird)
Nov 1 - Mar 20, 2018: $60
Mar 21 - Race Day: $70 (Late Reg)

Refunds: Refunds for personal reasons must be requested AT LEAST by Mar 21. Refunds for personal reasons are ONLY made via PayPal minus a 10% processing fee.

In the event the race is cancelled by an act of God/Nature or per the race directors discretion, the following guidelines apply depending on the date of cancellation:

Mar 21, 2018 - Race Day = 25% refund (via Paypal only)
Feb 15 - Mar 20, 2018 = 50% refund
Now - Feb 14, 2018 = 100% refund

First overall male and female in each event will receive a prize +
Overall Male & Female in each event (Free entry in 2019)
Age Groups (NO Age Group awards)

Race Rules:

1. Have fun!
2. Be Safe. There are many hazards along the course including (but not limited to), mountain lions, rough terrain, rattle snakes, sharp cliffs and drop offs, etc. It is your responsibility to run/ride safe and stay alert.
3. Except in case of medical emergency, participants may accept no aid nor assistance in any form from anyone, including pacers and crews, between aid stations.
4. Littering of any kind is strictly prohibited. Littering will result in the immediate disqualification in this year's race, and for all future races.
5. Participants must follow the marked trail at all times. Any participant departing from the official trail must return to the point of departure on foot before continuing.
6. Any entrant who is unable to finish the Race must personally inform personal at the nearest aid station of his or her decision to withdraw. You MUST turn in your race bib at this time. Runners who leave the course without turning in their bibs will be classified as "lost," and may be billed for charges incurred in any search and rescue operation.
7. Headphones are not allowed for the safety of all participants.
8. Bibs MUST be visible on the front of the athlete & on the bike.
9. Athletes must aslo mark arm and leg with their bib#.
10. Helmets w/Straps are required.
11. Slow riders/runners should stay to the right and allow faster athletes to pass.
12. Runners should yield to cyclists on the short sections where both share the course.
13. Photo ID is required for Bib pickup
14. Mountain bike is required (road bikes not allowed on course.
15. Transition Area Rules:
- No riding within the transition area.
- Racks are first come first serve.
- No glass allowed.
- Cyclists must rerack bike after mountain bike section before going out on final run.
- Area must be cleared buy 12:45PM.
- Relay Teams:
After Run1, Runner may tag off to cyclist at any point BEFORE bike is unracked. After Bike, Cyclist may tag off to runner at any point AFTER bike is reracked.

Important Details:

1. Stranded bikes will have to walk out to nearest aid station for bike pickup (Monastery or Meadow Ridge - there are no on course vehicles for pickup)
2 Entry Fee to park is $5 - carpooling HIGHLY recommended.
3. Park opens at 7AM (for race staff as well). On Site registration starts at 745AM
4. Anyone arriving after 825AM may have to wait to park (and start after everyone else). You will receive an accurate time but will not be eligible for awards.
5. If we have more than 100 athletes, two start waves may be used (split by age groups)
6. Paved sections MAY have vehicle traffic. Watch for cars.
7. Split times will be given for Run1, Transtion1, Bike, Transition2, Run2.
8. No Chip timing. Your number will be entered into a computer at the start, in and out of transitions and at the finish via LiveRunCast.
6. Preliminary results will be "live" during the race as you pass through the above checkpoints and will be viewable during the race and immediately after you finish. Results will be finalized within 24-48 hours.

Social Media

Harding Hustle 2016!

A post shared by Dirty Feet Productions (@dirtyfeettrail) on

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Travel Information

O'Neill Regional Park is located at:
20300 Trabuco Canyon Road Trabuco Canyon, CA 92678

Please note there is a $5 Parking Fee. Carpooling is HIGHLY recommended!


From South OC / San Diego:

5 Freeway North to Alicia Parkway Exit - Turn Right
Alica Parkway until it ends at Santa Margarita Parkway - Turn Right
Santa Margarita Parkway until it ends at Plano Trabuco - Turn Left
Plano Trabuco become Trabuco Canyon Road. Entrance will be on your Left.
From North OC / Los Angeles / Inland Empire (Toll - faster):

91 West (from Corona) or East from Yorba Linda / Fullerton to 241 (toll) South
Exit 22A for Portola Parkway - Turn Right on Portola
Portola to El Toro Road - Turn Left
El Toro Road to Like Oak Canyon Road - Turn Right
Live Oak Canyon Road becomes Trabuco Canyon Road. Entrance will be on your right.

From North OC / Los Angeles / Inland Empire (Non Toll - a bit slower):

5 Freeway South to Alicia Parkway Exit - Turn Left
Alica Parkway until it ends at Santa Margarita Parkway - Turn Right
Santa Margarita Parkway until it ends at Plano Trabuco - Turn Left
Plano Trabuco become Trabuco Canyon Road. Entrance will be on your Left.


Average Temps: 70/55

Course Information

The OC Dirty Trail Fest course consists of mostly trail with a mixture of single track and fireroad / doubletrack trails. There is about a half mile of pavement.

You do not need triathlon/duathlon experience to complete this course. A beginner can complete this course, though some mountain bike and trail running experience is recommended. You DO need experience if you want to complete it fast :) This is not a flat course and will have several ascents and descents on the run and bike course.

(Click on Images for larger version)

15K Bike Map

(same route for solo bike & bike portion of duathlon)

15K Run Map

Duathlon Run Map

Duathlon Combined Map

(run in yellow / bike in green)

Aid Station Master List