California · 100K · 50 Miler · 50K
Sean O'Brien 100K/50M/50K/26.2/30K
Sean O'Brien 100K/50M/50K/26.2/30K is a 100K, 50 Miler, 50K, 26.2 and 30K event held in Calabasas, California. Its next confirmed date is Saturday, January 30, 2027.
- Race day
- January 30, 2027
- Location
- Calabasas, CA
Race details
- Date
- Saturday, January 30, 2027
- Location
- Calabasas, California
- Distances
- 100K, 50 Miler, 50K, 26.2, 30K
- Official website
- khraces.com
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Guides from the RaceRove blog
- 7 min read How to Find a 5K, 10K, Half Marathon or Marathon Near You A practical way to find running races near you: pick a distance, decide how far you'll travel, read the listing properly and confirm the details before you register.
- 9 min read How to Run a Race in All 50 States How to plan a 50-state running challenge: set your own rules, group states into trips, build a calendar around the seasons, budget for it and keep track of every finish.
- 8 min read How to Choose the Best Half Marathon for a PR, Racecation or 50-State Challenge The best half marathon depends on what you want from it. How to choose a course for a personal record, a race worth travelling for, or an efficient stop on a 50-state challenge.
- Blog All guides Planning advice for finding, choosing and travelling to races.
Sean O'Brien 100K/50M/50K/26.2/30K: common questions
- When is the Sean O'Brien 100K/50M/50K/26.2/30K?
- The next confirmed date is Saturday, January 30, 2027.
- Where is the Sean O'Brien 100K/50M/50K/26.2/30K held?
- In Calabasas, California.
- What distances does the Sean O'Brien 100K/50M/50K/26.2/30K offer?
- 100K, 50 Miler, 50K, 26.2 and 30K.
- How do I register for the Sean O'Brien 100K/50M/50K/26.2/30K?
- Registration is handled by the organiser at khraces.com. Entry fees, caps and deadlines are set there.
Plan this race in RaceRove
Save it to your plan, compare it with other races, check typical race-day weather and track your 50-state progress in the interactive app.