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Catalina Island Marathon, 10K, 5K & Kids Run

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Race in California's longest-running trail marathon on Santa Catalina Island. Great for runners looking for a new challenge, the route takes you up formidable climbs and over rugged terrain. Come along for the stunning views or for the bespoke finisher's medal.

Review summary

1 Review
  • Course
  • Organisation
  • Atmosphere


Wes W
"The course is a very challenge one. The middle section from mile 11 to mile 21..."
See all reviews

How to enter the Catalina Island Marathon, 10K, 5K & Kids Run

  1. Marathon

    Run 26.2mi
    Event passed
  2. 5K

    Run 5km
    Event passed
  3. 10K

    Run 10km
    Event passed
  4. Kid's Run

    Run 1mi
    Event passed

Catalina Island Marathon, 10K, 5K & Kids Run routes

IMPORTANT NOTE: The marathon will start in Two Harbors, while all of the other races will start in Avalon.


The Marathon has an elevation gain of 4,310’. The course primarily runs along dirt roads throughout the interior of Catalina. Please be prepared for a hilly and challenging course. The final miles back into town are down a paved road.

The Marathon has a cut-off time of 8 hours.

5K & 10K

The 5K &10K is exclusively on the streets of Avalon. The course are great for a quick time, with the current records detailed below:


Male, Peter Long: 0:32:34
Female, Sherri Ellerby: 0:38:49


Male, Robert Grove: 0:16:27
Female, Jennifer Rubio: 0:19:32

Event Details


What’s Included

Marathon Runners will receive:

  • Long Sleeve "Finisher" Shirt - only finishers earn their shirt
  • Custom Finisher Medal
  • Finisher Year Bar - add to your collection or start your own tradition

10K & 5K Participants will receive:

  • Short Sleeve Shirt
  • Custom Finisher Medal

Kids Run Participants will receive:

  • Kids Finisher Medal
Raceday Logistics


March 13 - Registration

1530 - 1900: AVALON
Island Spa Catalina
163 Crescent Ave., Avalon, CA 90704

1530 - 1900: TWO HARBORS
Harbor Reef Restaurant

March 14 - Race Day

Marathon Walkers (Two Harbors)

0700: Marathon Runners (Two Harbors)

5K (Avalon)

0820: 10K (Avalon)

0930: Avalon Kids Run

Please arrive at least 45 minutes before your race to ensure there is plenty of time for a warm-up and travel.

Frequently Asked Questions

How do the awards work?
Marathon: Awards go to the overall, top three male and female finishers, and the top three male and female finisher's in each age division. Awards will also be given to the overall top three male and female finishers in the Clydesdale division, Athena division, and Islander division. 10K: Custom medals for the top 3 male and female finishers in each age group. Overall awards for the top three overall male and female finisher's. 5K: Custom medals for the top 3 male and female finishers in each age group. Overall awards for the top three overall male and female finisher's.
Are there on-course aid stations?
Yes, there will be a number refreshment stations and aid stations on the course. These will contain refreshments such as water, nutrition products, fruit and other snacks. Please note: participants must supply their own hydration system as this event it completely cupless.
What if I can’t pick-up my bib - Can someone else pick-up my bib for me?
Yes, someone can pick-up your bib and registration materials if you cannot make it to packet pick-up. You MUST provide: - A copy of your valid driver’s license or photo identification card (Smartphone picture will be accepted) - A signed and printed out Event Waiver - A signed BIB Authorization Form
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Catalina Island Marathon, 10K, 5K & Kids Run weather forecast

Possible drizzle until afternoon, starting again overnight.

Predicted highs
Predicted lows
Icon60% chance of rain
IconLight breeze possible, up to 7mph

Meet the organizer

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Catalina Island Marathon, 10K, 5K & Kids Run reviews

4.7 out of 5 stars

  • Course
  • Organisation
  • Atmosphere
  • Did the event in 2019

    The course is a very challenge one. The middle section from mile 11 to mile 21 are almost all the way up hill. The roads were muddy in many sections because of the rain a couple of days before. You have to get your foot wet in a few spots where steams rush across the road. There are plenty of aid stations with food and drink well loaded. The finish line is in the town of Avalon. I appreciate the traffic police attendances at major intersections.The only complain is that the start line is too far away from any restroom facilities (about half an mile)

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