Marathon directory
Marathons in Guam
1 upcoming marathon in Guam across 1 city. Next: Guam Ko'ko' Road Race Half Marathon on April 11, 2027.
1marathon upcoming
1city
April 11, 2027Next race
4distance types
List your marathon with verified details
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Already listed in Guam? Open the race and use Update listing. Missing event? Start here with the location prefilled.
Browse within Guam
Cities
| Place | Marathons |
|---|---|
| Tumon | 1 |
Planning notes for Guam
Use this country page to shortlist 1 upcoming race by date, distance, registration path, and official source.
- Next raceGuam Ko'ko' Road Race Half Marathon on April 11, 2027
- Busy monthsApril (1)
- DistancesHalf marathon, 5K, Relay, Kids' Run
- VerifyOpen each race page, then confirm details from its official, registration, course-map, or source link.