Photo Credit: Paksit Photos

Race Day Info

Date / Time: Saturday, February 3, 2018 at 6:00 AM

Race Distance: 100 kilometers

Location (Start / Finish): Malibu Creek State Park, Calabasas, CA

Race Day Temperature at Start (High / Low Avg.): 69 / 43 F

Sunrise / Sunset: 6:49 AM / 5:28 PM

Race Cutoff (Hrs.): 16

Course Information

Course Layout(Map): Lollipop Out and Back

Terrain: A mix of single track and dirt roads with mud and water crossing through the hills of Malibu.

Elevation Change (Ascent / Decent): 26,000 ft. (13,000 ft. / 13,000 ft.)

Altitude Above Sea Level (Min. / Max.): 75 ft. / 2,400 ft.

Number of Aid Stations (Max. distance in miles between A.S.): 8 (8.6 mi.)

Race Information

Cost: $170

Completion rate: 90% (137/152) 2017, 76% (73/96) 201688 Finishers 2015

Course Record (M/F): 8:24:35 Christopher Wehan (2017)/ 9:51:27 Magdalena Boulet (2015)

Prerequisites / Lottery / Trail Work Req.: No / No / No

Qualifying Race for: Western States 100

Race Series: N/A

Website: http://sob5050.com

Race Director: Keira Henninger

Year Established: 2014

Other Race Distances: 26.2 mi / 50k / 50 mi.

Fun Fact: The race was named after one of R.D. Keira Henninger’s best friends, Sean O Brien. He created the route/course, and was a huge inspiration for the race.

Nearest Airports (HRs): Los Angeles, CA (1), Santa Ana, CA (2)

Race Reports

2017

Strike Two in Malibu – Bob Shebest

Sean O’Brien Race Report – Sabrina Stanley

Sean O’Brien 100k – Brett Hornig

2016

Sean O’Brien 100k and the Golden Ticket – Amelia Boone

Sean O’Brien 100k – Devon Yanko

2015

Race Report: 2015 Sean O’Brien 100k – Peter Brennen

Sean O’Brien 100k – Meghan Arbogast

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