Friday Harbor, WA
Saturday, June 14, 2025
2.5 Stars from 2 ReviewsNo course description available at this time.
Don't waste months of training only to run the wrong pace.
San Juan Island Marathon Pace Bands are adjusted for the specific terrain of the course, your goal time and pacing strategies.
Only $9.99
Race Dates
2026: TBDCourse Information
Profile: HillyRace Day Weather
Mean Temp.: 53°F (11°C)PR Score & Course Score
PR Score: 91.58Race Size
2026: No ResultsBQ Percentages
2026: N/AMiscellaneous Information
Pace Groups?: No
Race Day Temperatures |
High: 69°F (21°C) |
Race Start Conditions |
56°F (13°C) |
PR Score |
92.52 |
Course Score |
93.42 |
The San Juan Island Marathon was the largest marathon in the U.S. in 2025 based on the number of finishers. In 2024, it ranked as the largest marathon in the U.S..
In 2024, no San Juan Island Marathon finishers achieved Boston Marathon qualifying times.
Based on its percentage of Boston Qualifiers (BQs), the San Juan Island Marathon ranked among marathons in the U.S. in 2024.
The San Juan Island Marathon has a Course Score of 92.36, ranking it as the fastest marathon course in the U.S. and the fastest marathon course in Washington.
Typical race-time temperature and humidity levels are above the ideal range for optimal marathon performance. Combined with the course profile, this gives the San Juan Island Marathon a PR Score of 91.58. The PR Score ranks the San Juan Island Marathon as the best marathon in the U.S. for running a Personal Record (PR) and the best marathon for a PR in Washington.
Together, these rankings provide a quick snapshot of how the San Juan Island Marathon compares with other marathons in the U.S. and Washington for speed, PR potential, Boston Marathon qualifying success, and overall participation.
Max Elevation: 359 feet (109m)
Min Elevation: 41 feet (12m)
View available accomodations around the San Juan Island Marathon Finish Line and Course. Book your Reservation now before the best places are sold out.
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See how your finish time would compare on other marathon courses with our Time Conversion Tool.
Beautiful course
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