Oak Ridge to Kingston Express O2K Marathon

Oak Ridge, TN, USA · February 28, 2027·
partly-cloudy-night41°·49° high·Light·Dry
10
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Race Day Weather

partly-cloudy-night
41°at start
54° high
Light
Dry
Your goal
0:00:00

Cool morning, steady winds

Runners will face a temperature trend starting at 41°F and peaking at 52°F. Winds from the SW will reach up to 7 mph, with gusts to 19 mph. With humidity at 70%, hydration will be crucial—runners should consider adjusting their pace to stay comfortable.

Race day forecast available in 108 days
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Pace Calculator

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Race Plan

Get your personalized Oak Ridge to Kingston Express O2K Marathon race plan

A mile-by-mile breakdown of where your time goes, weather-adjusted splits, fueling timeline with aid stations, packing checklist, carb tracker, spectator guide, all built around your goal and race-day conditions.

Race Pace
Weather Splits
Nutrition
Gear & Packing
T-Minus
Carb Tracker
Spectator Guide
Race Band

Race Info

The Oak Ridge to Kingston Express is a Boston-qualifier-focused marathon and half marathon in Oak Ridge, Tennessee, held in late February or early March. Both start on North Jefferson Circle and follow the Oak Ridge Turnpike, which has a bike lane and shoulder. The marathon is an out-and-back on a USATF-certified course with under 600 feet of climbing, and the half is a point-to-point with under 400 feet. Entry is capped at 50 runners and there are no shirts or awards. Source

Race weekend

Sunday, February 28
6:00 AMMarathon (26.2 mi)
6:00 AMHalf Marathon (13.1 mi)

FAQ

When is the 2027 Oak Ridge to Kingston Express O2K Marathon?

The 2027 Oak Ridge to Kingston Express O2K Marathon will be held on Sunday February 28, 2027.

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 hours.

What will the weather be like for the 2027 Oak Ridge to Kingston Express O2K Marathon?

The forecast calls for a high of 58°F and a low of 39°F with a 13% chance of rain. Check our detailed hourly forecast above for the best marathon race plan.

Historical Weather

Based on 6 years of data
Avg Temp
44°F
L:40° H:51°
RunScore
9
Conditions
Rain Freq
0%
0 of 6 yrs
Wind2mph
Dew34°F

Temperature History

Range of temperatures during race hours for each year.

Detailed History

YearConditionsLow / HighRainScoreResults
2026
cloudy
47°/61°-
9
2025
clear-night
26°/31°-
10
2024
cloudy
46°/51°-
10
2023
clear-night
37°/53°-
10
2022
partly-cloudy-night
54°/67°-
7
2021
clear-night
28°/45°-
10