Dam Marathon (WA) Half Marathon

Orting, WA, USA · September 4, 2027·
partly-cloudy-day49°·57° high·Calm·Dry
10
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Dam Marathon (WA) Half Marathon race day weather

partly-cloudy-day
49°at start
65° high
Light
Dry
Your goal
0:00:00

Cool start — fast day potential, big temp swing

A cool 49°F at the start line is ideal for fast times — expect to warm up quickly once you're moving. Temps will climb significantly to 65°F by later miles, so expect fading conditions as the race progresses.

Race day forecast available in 287 days
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Pace Calculator

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Race Plan

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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

About the Dam Marathon (WA) Half Marathon

The Dam Marathon's half marathon starts in South Prairie and follows the paved Foothills Rail Trail on a gradual downhill, with a net elevation loss of 339 feet. The route winds through farmland and forest beside the Carbon River and finishes in Orting near the McMillin Bridge. It is run on the Saturday of race weekend and is USATF-certified.

Race weekend

Saturday, September 4
7:00 AMMarathon (26.2 mi)
8:15 AMHalf Marathon (13.1 mi)

Dam Marathon (WA) Half Marathon FAQ

When is the 2027 Dam Marathon (WA) Half Marathon?

The 2027 Dam Marathon (WA) Half Marathon will be held on Saturday September 4, 2027.

What is the time limit for the Dam Marathon (WA) Half Marathon?

The time limit for the Dam Marathon (WA) Half Marathon is 4 hours.

What will the weather be like for the 2027 Dam Marathon (WA) Half Marathon?

The forecast calls for a high of 66°F and a low of 44°F with a 7% chance of rain. Check our detailed hourly forecast above for the best half marathon race plan.

What is the weather usually like for the Dam Marathon (WA) Half Marathon?

Over the 6 years racecast.io has race-day weather for (2021 to 2026), it averaged 52°F at the start and 58°F by a typical finish. Rain fell during race hours in 1 of those years (2021).

What was the hottest Dam Marathon (WA) Half Marathon?

Of the 6 years on record, 2022 was the warmest, reaching 64°F during race hours. The coldest start was 2024, at 49°F.

What was the windiest Dam Marathon (WA) Half Marathon?

Of the 6 years on record, 2023 was the windiest, with wind averaging 5 mph during race hours. The calmest was 2026, at 2 mph.

Dam Marathon (WA) Half Marathon weather history

Based on 6 years of data
Avg Temp
55°F
L:52° H:58°
RunScore
9
Conditions
Rain Freq
17%
1 of 6 yrs
Wind3mph
Dew49°F

Temperature History

Range of temperatures during race hours for each year.

Detailed History

YearConditionsLow / HighRainScoreResults
2026
partly-cloudy-day
52°/55°-
9
2025
clear-day
52°/62°-
8
2024
partly-cloudy-day
49°/55°-
10
2023
partly-cloudy-day
55°/60°-
8
2022
clear-day
54°/64°-
7
2021
cloudy
53°/54°Light
10