Runners will face a temperature rise from 54°F at the start to 81°F by the finish. With a light wind from the NNE at 6 mph and low humidity at 37%, conditions are favorable but will warm significantly. Runners should adjust their pace as temperatures climb and stay hydrated throughout the race.

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Distance: 26.2mi

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About the Crater Lake Marathon

The Crater Lake Marathon is a trail marathon run within Crater Lake National Park in southern Oregon, following sections of Rim Drive at elevations between 5,980 and 7,850 feet. The final four miles of the marathon course run on unpaved pumice cinder road near the lake's north shore. Companion 13-mile and 6.7-mile races share most of the route, with cutoff times of 10:00 AM and 9:30 AM respectively, while the marathon cutoff is 1:00 PM.

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Race weekend

Saturday, August 9

7:30 AMMarathon (26.2 mi)

7:30 AM13M (13.0 mi)7:30 AM6.7M (6.7 mi)

Course Map

Crater Lake Marathon FAQ

When is the 2025 Crater Lake Marathon?

The 2025 Crater Lake Marathon will be held on Saturday August 9, 2025.

What will the weather be like for the 2025 Crater Lake Marathon?

The forecast calls for a high of 86°F and a low of 48°F with a 0% chance of rain. Check our detailed hourly forecast above for the best marathon race plan.

What is the weather usually like for the Crater Lake Marathon?

Over the 3 years racecast.io has race-day weather for (2023 to 2025), it averaged 52°F at the start and 76°F by a typical finish. It has not rained during race hours in any of those years.

What was the hottest Crater Lake Marathon?

Of the 3 years on record, 2023 was the warmest, reaching 78°F during race hours. The coldest start was 2024, at 50°F.

What was the windiest Crater Lake Marathon?

Of the 3 years on record, 2023 was the windiest, with wind averaging 6 mph during race hours. The calmest was 2024, at 0 mph.

Crater Lake Marathon weather history

Based on 3 years of data

Avg Temp

66°F

L:52° H:76°

RunScore

Conditions

Rain Freq

0 of 3 yrs

Wind3mph

Dew48°F

Temperature History

Range of temperatures during race hours for each year.

Detailed History

Year	Low / High	Rain	Dew Point
2025 Crater Lake Marathon Clear conditions throughout the day. 2025	54°/73°	-	43°
2024 Crater Lake Marathon Clear conditions throughout the day. 2024	50°/75°	-	53°
2023 Crater Lake Marathon Clear conditions throughout the day. 2023	52°/78°	-	48°

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