Semper Fi 5k/Half/Marathon

Next date not announced · last held Sat, Oct 24 Washington, DC
Half marathon5K
Race website & registration

Your chances

Where would you finish?

Enter your race pace or connect Strava, and raceIQ compares you with this race's past finishers in your age group and gender.

See your predicted place
Finish times

From the most recent results at each distance.

DistanceFinishersWinnerTop 5%Top 25%Median
Marathon (2021)572:44:003:24:153:55:534:34:57
Half marathon (2025)1091:30:071:39:031:50:292:01:52
5K (2025)13218:4020:4526:5031:03
Field strength
5KCompetitive

Faster up front than 85% of the 5K races we track, based on 358 finishers over 3 editions.

Half marathonCompetitive

Faster up front than 62% of the half marathon races we track, based on 519 finishers over 3 editions.

MarathonCasual

Faster up front than 23% of the marathon races we track, based on 57 finishers over 1 edition.

Race-morning weather

50°F

Typical 7–9am temperature on race day over the past five years, with a dew point of 45°F. Usually cool enough that heat shouldn't slow you down.

Finishers by year
YearHalf marathon5KMarathon
2025109132—
2024179107—
2023231119—
2022197118—
202116510257