The 2026 event has concluded.
Oak Ridge to Kingston Express O2K Marathon
Oak Ridge, TN, USA • March 1, 2026
Race Day Weather
46°
73° high
Light
Dry
Cool morning, steady conditions
Runners will face a temperature increase from 48°F at the start to a peak of 67°F. Wind will be light at 6 mph from the NW, providing minimal impact on performance. With humidity at 62% and a dew point of 40°F, hydration should be maintained, but pace can remain steady throughout the race.
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Distance: 26.2mi
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This race is primarily targeted to those seeking a Boston Marathon Qualifying time or Half Marathon performance indicator on a course where qualifications are consistently met. This race course boasts having more BQ performances than not and we hope to attract runners who are trying to hit their age group standards for Boston or other major races. Source
FAQ
When is the 2026 Oak Ridge to Kingston Express O2K Marathon?
The 2026 Oak Ridge to Kingston Express O2K Marathon will be held on Sunday March 1, 2026.
Is the Oak Ridge to Kingston Express O2K Marathon a Boston Marathon Qualifier?
Yes, the Oak Ridge to Kingston Express O2K Marathon is an official Boston Marathon qualifier.
What is the time limit for the Oak Ridge to Kingston Express O2K Marathon?
The time limit for the Oak Ridge to Kingston Express O2K Marathon is 4.5 hours.