Lilac Bloomsday 12K

Spokane, WA, USA · May 2, 2027

52°·61° high·Breezy·Dry

Weather

Race Day Weather

52°at start

63° high

Breezy

Dry

Mild start, gradual warming

Runners will face a start temperature of 52°F, rising to 56°F by the finish. With a light SSW wind reaching 9 mph, runners will experience crosswinds during the first three miles and headwinds in mile six. Given the mild temperatures, maintaining hydration throughout the race is crucial, especially during the exposed stretches.

Race day forecast available in 166 days

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Distance: 7.5mi

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Race Info

The Lilac Bloomsday 12K is a 12-kilometer (7.46-mile) road race held in Spokane, Washington, on the first Sunday in May. Runners start in color-coded waves on Riverside Avenue downtown, and the course mixes hills with flat stretches through the city. It is one of the largest timed road races in the United States, with 32,207 finishers in 2025, and is part of the PRRO Circuit of classic road races. Source

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FAQ

When is the 2027 Lilac Bloomsday 12K?

The 2027 Lilac Bloomsday 12K will be held on Sunday May 2, 2027.

What is the time limit for the Lilac Bloomsday 12K?

The time limit for the Lilac Bloomsday 12K is 4.5 hours.

What will the weather be like for the 2027 Lilac Bloomsday 12K?

The forecast calls for a high of 65°F and a low of 43°F with a 6% chance of rain.

Historical Weather

Based on 3 years of data

Avg Temp

60°F

L:51° H:60°

RunScore

Conditions

Rain Freq

33%

1 of 3 yrs

Wind7mph

Dew35°F

Temperature History

Range of temperatures during race hours for each year.

Detailed History

Year	Low / High	Rain	Dew Point
2026 Lilac Bloomsday 12K Clear conditions throughout the day. 2026	60°/75°	-	37°
2025 Lilac Bloomsday 12K Becoming cloudy in the afternoon. 2025	46°/58°	-	30°
2024 Lilac Bloomsday 12K Cloudy skies throughout the day with rain. 2024	46°/48°	Light	43°

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