Upcoming Half Marathon Races Near King County, WA

Name: Run the Bay
Start: 2026-11-08
End: 2026-11-08
Location: University Place

Whitehorse Half Marathon

Arlington, WA

Saturday, March 28th, 2026

Featured

Half

View details for race Whitehorse Half Marathon

Want to feature your race?

Get your race seen first by thousands of runners

Learn More

Learn how to feature your race

Viking 5K, 10K, 13.1, & 26.2 at Langus Riverfro...

Everett, WA

Saturday, April 4th, 2026

10K

Half

View details for race Viking 5K, 10K, 13.1, & 26.2 at Langus Riverfront Park, Everett, WA (14) 80

Pirate 5K, 10K, & 13.1M at Everett, WA (15)

Everett, WA

Saturday, April 11th, 2026

10K

Half

View details for race Pirate 5K, 10K, & 13.1M at Everett, WA (15)

Earth Day Run

Seattle, WA

Saturday, April 18th, 2026

10K

15K

View details for race Earth Day Run

Seattle Cherry Blossom Run

Seattle, WA

Saturday, April 18th, 2026

10K

Half

View details for race Seattle Cherry Blossom Run

Squak Mountain Trail Run

Issaquah, WA

Saturday, April 18th, 2026

12K

Half

Ultra

Trail

View details for race Squak Mountain Trail Run

Luau 5K, 10K, & 13.1M at Everett, WA (18)

Everett, WA

Saturday, May 2nd, 2026

10K

Half

View details for race Luau 5K, 10K, & 13.1M at Everett, WA (18)

Tacoma City Marathon / Half / Ghost / 10K / 5K ...

Tacoma, WA

Saturday, May 2nd, 2026

Marathon

Half

10K

View details for race Tacoma City Marathon / Half / Ghost / 10K / 5K / 1K

Kirkland Half Marathon & 5K

Kirkland, WA

Sunday, May 3rd, 2026

Half

View details for race Kirkland Half Marathon & 5K

Snohomish Women's Run

Everett, WA

Saturday, May 9th, 2026

Half

10K

Fast

View details for race Snohomish Women's Run

Soaring Eagle Trail Run

Sammamish, WA

Saturday, May 16th, 2026

Half

10K

View details for race Soaring Eagle Trail Run

Spring - Mud Mountain Dam Marathon & Half Marathon

Enumclaw, WA

Saturday, May 30th, 2026

Marathon

Half

View details for race Spring - Mud Mountain Dam Marathon & Half Marathon

Spring Mud Mountain Dam Marathon & Half Marathon

Buckley, WA

Saturday, May 30th, 2026

Marathon

Half

View details for race Spring Mud Mountain Dam Marathon & Half Marathon

Medal Madness 5K, 10K, & Half Marathon at Langu...

Everett, WA

Saturday, June 6th, 2026

10K

Half

View details for race Medal Madness 5K, 10K, & Half Marathon at Langus Riverfront Park, Everett, WA (23) 80

The Great Ferry Race

Bainbridge Island, WA

Sunday, June 7th, 2026

Half

Trail

View details for race The Great Ferry Race

Medal Madness 5K, 10K, & 13.1M at Everett, WA (24)

Everett, WA

Saturday, June 13th, 2026

10K

Half

View details for race Medal Madness 5K, 10K, & 13.1M at Everett, WA (24)

Super Hyak Marathon and Half

North Bend, WA

Saturday, June 13th, 2026

Marathon

Half

View details for race Super Hyak Marathon and Half

Tiger Peak Challenge

Issaquah, WA

Saturday, June 20th, 2026

Half

Ultra

Trail

View details for race Tiger Peak Challenge

Solstice Run

Seattle, WA

Saturday, June 20th, 2026

10K

15K

View details for race Solstice Run

Medal Madness 5K, 10K, & Half Marathon at Lowel...

Everett, WA

Saturday, June 20th, 2026

10K

Half

View details for race Medal Madness 5K, 10K, & Half Marathon at Lowell Riverfront Park, Everett, WA (25) 80

Snoqualmie Valley Half

Carnation, WA

Saturday, June 20th, 2026

10K

Half

Trail

Fast

View details for race Snoqualmie Valley Half

Eagle 5K, 10K, 13.1M Everett, WA (27)

Everett, WA

Saturday, July 4th, 2026

10K

Half

View details for race Eagle 5K, 10K, 13.1M Everett, WA (27)

Eagle 5K, 10K, & 13.1M at Everett, WA (28)

Everett, WA

Saturday, July 11th, 2026

10K

Half

View details for race Eagle 5K, 10K, & 13.1M at Everett, WA (28)

Eagle 5K, 10K, & 13.1M at Everett, WA (29)

Everett, WA

Saturday, July 18th, 2026

10K

Half

View details for race Eagle 5K, 10K, & 13.1M at Everett, WA (29)

B & O Half Marathon and 10k

Orting, WA

Sunday, July 19th, 2026

Half

10K

Trail

Fast

View details for race B & O Half Marathon and 10k

Jack & Jill Downhill Marathon, Half Marathon Wa...

North Bend, WA

Saturday, July 25th, 2026

Marathon

Half

Fast

View details for race Jack & Jill Downhill Marathon, Half Marathon Washington

Ninja 5K, 10K & 13.1M at Everett, WA (31)

Everett, WA

Saturday, August 1st, 2026

10K

Half

View details for race Ninja 5K, 10K & 13.1M at Everett, WA (31)

Craft Classic Seattle

Redmond, WA

Sunday, August 2nd, 2026

Half

Fast

View details for race Craft Classic Seattle

Twilight at the Bay

University Place, WA

Saturday, August 15th, 2026

Half

10K

Trail

View details for race Twilight at the Bay

Iron Horse Half Marathon

North Bend, WA

Sunday, August 30th, 2026

Half

Trail

View details for race Iron Horse Half Marathon

Medal Madness 5K, 10K, 13.1M & 26.2M at Everett...

Everett, WA

Saturday, September 5th, 2026

10K

Half

View details for race Medal Madness 5K, 10K, 13.1M & 26.2M at Everett, WA (36)

Cascade Express Marathon & Half Marathon

North Bend, WA

Saturday, September 12th, 2026

Marathon

Half

Trail

Fast

View details for race Cascade Express Marathon & Half Marathon

Beat the Blerch

Carnation, WA

Saturday, September 12th, 2026

10K

Half

Trail

View details for race Beat the Blerch

Medal Madness 5K, 10K, & 13.1M at Everett, WA (37)

Everett, WA

Saturday, September 12th, 2026

10K

Half

View details for race Medal Madness 5K, 10K, & 13.1M at Everett, WA (37)

Orca Half Marathon

Seattle, WA

Saturday, September 19th, 2026

Half

View details for race Orca Half Marathon

Medal Madness 5K, 10K, 13.1 at Everett, WA (38)

Everett, WA

Saturday, September 19th, 2026

10K

Half

View details for race Medal Madness 5K, 10K, 13.1 at Everett, WA (38)

Fall - Mud Mountain Dam Marathon & Half Marathon

Enumclaw, WA

Saturday, September 19th, 2026

Marathon

Half

View details for race Fall - Mud Mountain Dam Marathon & Half Marathon

Haunted 5K, 10K, 13.1 & 26.2 at Everett, WA (40)

Everett, WA

Saturday, October 3rd, 2026

10K

Half

View details for race Haunted 5K, 10K, 13.1 & 26.2 at Everett, WA (40)

Run for the Gnomes Half Marathon & 5K

Maple Valley, WA

Saturday, October 3rd, 2026

Half

10K

Fast

View details for race Run for the Gnomes Half Marathon & 5K

Poulsbo Half Marathon & 10k

Poulsbo, WA

Sunday, October 4th, 2026

Half

10K

Trail

View details for race Poulsbo Half Marathon & 10k

Haunted 5K, 10K, & 13.1M at Everett WA (41)

Everett, WA

Saturday, October 10th, 2026

10K

Half

View details for race Haunted 5K, 10K, & 13.1M at Everett WA (41)

Haunted 5K, 10K, 13.1, Everett, WA (42)

Everett, WA

Saturday, October 17th, 2026

10K

Half

View details for race Haunted 5K, 10K, 13.1, Everett, WA (42)

Lake Washington Half Marathon

Kirkland, WA

Saturday, October 17th, 2026

Half

Trail

View details for race Lake Washington Half Marathon

Gobbler 5K, 10K, &13.1M at, Everett, WA (45)

Everett, WA

Saturday, November 7th, 2026

10K

Half

View details for race Gobbler 5K, 10K, &13.1M at, Everett, WA (45)

Run the Bay

University Place, WA

Sunday, November 8th, 2026

Half

10K

Trail

View details for race Run the Bay

Explore more in King County, WA

Distances:

5K 10K Half Marathon Marathon

Months:

April May June

Tags:

Trail Boston Qualifiers Fast Courses

State:

All Washington races

Don't see your race? Add it!

Add Your Race (Free)