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January 21, 2023
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Saturday, January 28, 2023
November 20, 2021

Malibu Creek State Park
1925 Las Virgenes Road
Calabasas, CA 91302

Race morning at the start line on January 28th.

OPTIONAL BIB PICKUP: Friday January 27 3pm-6pm

Fleet Feet Running Store

30125 Agoura Rd, Agoura Hills, CA 91301

from 5:15 on race morning

The Sean O'Brien 50 Mile is a Sterling Silver Ticket Race. The top 2 men and women to finish will receive entry into the AC100.

Sean O'Brien 100k is a Western States 100 Mile qualifier.

Athlete Guides:

View the 100k & 50 Mile Athlete Guide

View the 50k | 26.2 | 30k Athlete Guide

View the 2023 Athlete Guide
Saturday, January 28, 2023
November 20, 2021

Malibu Creek State Park
1925 Las Virgenes Road
Calabasas, CA 91302

Race morning at the start line on January 28th.

OPTIONAL BIB PICKUP: Friday January 27 3pm-6pm

Fleet Feet Running Store

30125 Agoura Rd, Agoura Hills, CA 91301

Download the 2021 Athlete Guide Here.

Cut Offs

Course Aid Stations

Cut Offs

15 hours

  • Bonsall Drive Mile 22.7 – Noon
  • Zuma Edison Ridge Motorway #2 Mile 31.1 – 2:45pm
  • Kanan Road #2 Mile 36.3 – 4:30pm
  • Piuma Creek - Mile 48 - 9:30pm

Course Aid Stations

  1. Corral Canyon #1 – Mile 6.5
  2. Kanan Road #1 Crossing – Mile 13 & DROP BAGS
  3. Zuma Edison Ridge Motorway #1- Mile 19.2
  4. Bonsall Drive- Mile 22.7. DROP BAGS
  5. Zuma Edison Ridge Motorway #2- Mile 31.3
  6. Kanan Road #2- Mile 36.3 DROP BAGS – GET YOUR LIGHT!
  7. Corral Canyon #2- Mile 42.9

What to expect at the aid stations:

  • TONS of sweet and salty snacks
  • PB&J’s, potatoes & fresh fruit
  • GU gels, GU roctane salt pills, GU roctane electrolyte, and Fluid Electrolyte
  • If it's hot, we'll have ice at aid stations

Total Elevation Gain: 11,222 feet

Click here for the 50-mile Course Profile

Cut Offs

17 hours (16 hours for WSER Qualifier)

  • Bonsall Drive mile 22.7 – 11am - drop to 50 mile
  • Zuma Edison Ridge Motorway #2 Mile 31.3 – 1:35pm  - drop to 50 mile
  • Kanan Road #2 Mil 36.3 – 3pm - drop to 50 mile
  • Corral Canyon #2 Mile 42.9 – 4:30pm
  • Bulldog fire road Mile 49.5 – 6:00pm
  • Corral Canyon #3 Mile 56 – 7:45pm
  • Piuma Creek Crossing mile 60 – 9:30pm

Course Aid Stations

  1. Corral Canyon #1 – Mile 6.5
  2. Kanan Road #1 Crossing – Mile 13 & DROP BAGS
  3. Zuma Edison Ridge Motorway #1- Mile 19.2
  4. Bonsall Drive- Mile 22.7. DROP BAGS
  5. Zuma Edison Ridge Motorway #2- Mile 31.3
  6. Kanan Road #2- Mile 36.3 DROP BAGS – GET YOUR LIGHT!
  7. Corral Canyon #2- Mile 42.9
  8. Bulldog Road mile 49.5 water only DROP BAGS -GET YOUR LIGHT!
  9. Corral Canyon #3 mile 56

What to expect at the aid stations:

  • TONS of sweet and salty snacks
  • PB&J’s, potatoes & fresh fruit
  • GU gels, GU roctane salt pills, GU roctane electrolyte, and Fluid Electrolyte
  • If it's hot, we'll have ice at aid stations

Click here for the 100k Course Profile

Cut Offs

Course Aid Stations

  1. Corral Canyon #1 – Mile 6.5
  2. Latigo Road #1 Crossing – Mile 11
  3. Kanan Trailhead – Mile 13 & DROP BAGS
  4. Zuma Fire Road- 50k Turn around
  5. Kanan Trailhead- Mile 18 – DROP BAGS (2x)
  6. Latigo Road Crossing-  Mile 20
  7. Corral Canyon-  Mile 24.5 (last aid station before finish)


View Course Profile

Cut Offs

Course Aid Stations

50M

Start time
6AM

30k

Start time
7:00 AM

50k

Start time
7:00AM

100k

Start time
5AM

Marathon

Start time
7:00 am

Other Details

This will be a cupless race. No plastic! We will not have cups at the aid stations. You must be self sufficient and carry hydration.

Travel & Lodging Information

Hampton Inn

30255 Agoura Road,
Agoura Hills, CA 91301
800 HAMPTON(426-7866)
1-818-597-0333
www.agourahills.hamptoninn.com

Malibu Resource Site

Malibu visitors’ website that will help you get around the town:
All Things Malibu

Past Race Results

Sean O'Brien Trail Runs

2019 Results

2019 Race Photos

2014-2018 Results

2015 Race Photos. Big thanks to Stepahnie Plomarity providing us with the photography.

2014 Race Photos

Sponsors

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Safe Socially-Distant Racing

We make sure to provide safe and effective racing protocols ensure your health and safety.
Download our Covid-19 Guidelines

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