Black Diamond close

Half Marathon Calendar near Black Diamond 2025-2026

Explore the top half marathons near Black Diamond for 2025-2026! We've gathered 53 exciting races in the area. Check out our detailed list below to find your next local race.

December 2025
Dec
6
Sa

Redmond Reindeer Romp

Trail Run 5 mi 13 mi
Dec
13
Sa

Pigtails Run

Trail Run Half Marathon Marathon 50 km
Dec
13
Sa

Santa Runs Tacoma

5 km 10 km Half Marathon
Dec
13
Sa

The Best Races - Seattle

5 km 10 km 13 mi
Dec
20
Sa

Santa Bear Half

5 km 10 km 13 mi
Dec
27
Sa

The Best Races - Seattle

5 km 10 km 13 mi
Dec
27
Sa

Lake Sammamish Classic 13.1

13 mi
January 2026
Jan
3
Sa

The Best Races - Seattle

5 km 10 km 13 mi
Jan
17
Sa

The Best Races - Seattle

5 km 10 km 13 mi
Jan
17
Sa

Frost Eagle Trail Run

Trail Run 5 mi 13 mi
Jan
18
Su

Birthday Run - Seattle

13 mi 26 mi
February 2026
Feb
7
Sa

The Best Races - Seattle

5 km 10 km 13 mi
Feb
8
Su

My Better Half Marathon

5 km 10 km 13 mi
Feb
8
Su

West Seattle Beach Run - Fat Ass

Trail Run Half Marathon Marathon 50 km
Feb
14
Sa

The Best Races - Seattle

5 km 10 km 13 mi
March 2026
Mar
7
Sa

Lake Sammamish Half Marathon

Half Marathon
Mar
7
Sa

The Best Races - South Lake Union

5 km 10 km 13 mi
Mar
8
Su

The Kirk-Wood Half Marathon

Half Marathon
Mar
14
Sa

St. Paddy's Day Run Tacoma

5 km 10 km Half Marathon
Mar
14
Sa

The Best Races - Seattle

5 km 10 km 13 mi