Timberline Marathon

Government Camp, OR, USA · June 5, 2027

58°·71° high·Light·Dry

Weather

Race Day Weather

58°at start

72° high

Breezy

Dry

Warming trend, light wind

Runners will face a temperature rise from 58°F at the start to 72°F by the finish, with average humidity at 40%. Wind will be light, with gusts up to 23 mph from the W. Runners should consider adjusting their pace as temperatures climb and stay hydrated throughout the race.

Race day forecast available in 268 days

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Distance: 26.2mi

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Race Info

The Timberline Marathon circles Timothy Lake twice on the shoulders of Mount Hood, a singletrack trail course at roughly 3,000 feet in Oregon's Cascades. The route crosses the Timothy Lake dam and several rustic bridges before finishing near the historic Clackamas Lake Ranger Station. It runs every June alongside a 14.4 mile half marathon offered on both Saturday and Sunday. Negative Split organizes the race under a special-use permit with the Mt. Hood National Forest.

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Course Map

FAQ

When is the 2027 Timberline Marathon?

The 2027 Timberline Marathon will be held on Saturday June 5, 2027.

What will the weather be like for the 2027 Timberline Marathon?

The forecast calls for a high of 75°F and a low of 48°F with a 6% chance of rain. Check our detailed hourly forecast above for the best marathon race plan.

Historical Weather

Based on 5 years of data

Avg Temp

77°F

L:65° H:78°

RunScore

Conditions

Rain Freq

20%

1 of 5 yrs

Wind10mph

Dew51°F

Temperature History

Range of temperatures during race hours for each year.

Detailed History

Year	Low / High	Rain	Dew Point
2025 Timberline Marathon Clear conditions throughout the day. 2025	69°/92°	-	55°
2024 Timberline Marathon Clear conditions throughout the day. 2024	69°/85°	-	51°
2023 Timberline Marathon Partly cloudy throughout the day. 2023	62°/74°	-	49°
2022 Timberline Marathon Partly cloudy throughout the day with rain. 2022	65°/69°	-	57°
2021 Timberline Marathon Partly cloudy throughout the day with afternoon rain. 2021	61°/68°	Light	47°

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