Upcoming Half Marathon Races Near Mercer Island, WA

Organize a race? Get it in front of thousands of runners.

Add it free Feature it

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

Olympia, WA

Saturday, June 27th, 2026

10K

Half

View details for race Medal Madness 5K, 10K, & Half Marathon at Heritage Park, Olympia, WA (26) 80

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, & Half Marathon at Heritage Park...

Olympia, WA

Saturday, July 4th, 2026

10K

Half

View details for race Eagle 5K, 10K, & Half Marathon at Heritage Park, Olympia, WA (27) 80

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)

Olympia Lakefair Races - Half Marathon, 8K & 3K

Olympia, WA

Saturday, July 18th, 2026

Half

Trail

Fast

View details for race Olympia Lakefair Races - Half Marathon, 8K & 3K

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

Eagle 5K, 10K, & 13.1M at Olympia, WA (30)

Olympia, WA

Saturday, July 25th, 2026

10K

Half

View details for race Eagle 5K, 10K, & 13.1M at Olympia, WA (30)

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

Race the Reserve Whidbey Island

Coupeville, WA

Saturday, August 8th, 2026

10K

Half

View details for race Race the Reserve Whidbey Island

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)

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)

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

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

Olympia, WA

Saturday, September 12th, 2026

10K

Half

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

Beat the Blerch

Carnation, WA

Saturday, September 12th, 2026

10K

Half

Trail

View details for race Beat the Blerch

Orca Half Marathon

Seattle, WA

Saturday, September 19th, 2026

Half

View details for race Orca Half Marathon

Fall Mud Mountain Dam Marathon & Half Marathon

Enumclaw, WA

Saturday, September 19th, 2026

Marathon

Half

Trail

View details for race Fall Mud Mountain Dam Marathon & 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)

Quilcene Oyster Races

Quilcene, WA

Sunday, September 20th, 2026

Half

10K

View details for race Quilcene Oyster Races

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

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

Everett, WA

Saturday, October 3rd, 2026

10K

Half

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

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 Olympia, WA (41)

Olympia, WA

Saturday, October 10th, 2026

10K

Half

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

Haunted 5K, 10K, & 13.M at WA (41)

Everett, WA

Saturday, October 10th, 2026

10K

Half

Trail

View details for race Haunted 5K, 10K, & 13.M at WA (41)

The Snohomish River Run Marathon, Half Marathon...

Snohomish, WA

Sunday, October 11th, 2026

10K

Half

Fast

View details for race The Snohomish River Run Marathon, Half Marathon, 10K and 5K

Haunted 5K, 10K & 13.1M at Everett, WA (42)

Everett, WA

Saturday, October 17th, 2026

10K

Half

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

Lake Washington Half Marathon

Kirkland, WA

Saturday, October 17th, 2026

Half

Trail

View details for race Lake Washington Half Marathon

Haunted 5K, 10K, & 13.1M at Olympia, WA (43)

Olympia, WA

Saturday, October 24th, 2026

10K

Half

View details for race Haunted 5K, 10K, & 13.1M at Olympia, WA (43)

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

Gobbler 5K, 10K, & 13.1M at Everett, WA (46)

Everett, WA

Saturday, November 14th, 2026

10K

Half

View details for race Gobbler 5K, 10K, & 13.1M at Everett, WA (46)

Gobbler 5K, 10K & 13.1M at Olympia, WA (46)

Olympia, WA

Saturday, November 14th, 2026

10K

Half

View details for race Gobbler 5K, 10K & 13.1M at Olympia, WA (46)

Gobbler 5K, 10K, & 13.1M at Everett, WA (47)

Everett, WA

Saturday, November 21st, 2026

10K

Half

View details for race Gobbler 5K, 10K, & 13.1M at Everett, WA (47)

2026 Seattle Ghost Marathon, Half & 50K

Seattle, WA

Saturday, November 28th, 2026

Marathon

Half

Ultra

Fast

View details for race 2026 Seattle Ghost Marathon, Half & 50K

Gobbler 5K, 10K, & 13.1M at Olympia, WA (48)

Olympia, WA

Saturday, November 28th, 2026

10K

Half

View details for race Gobbler 5K, 10K, & 13.1M at Olympia, WA (48)

Holiday 5K, 10K, & 13.1M at Everett, WA (49)

Everett, WA

Saturday, December 5th, 2026

10K

Half

View details for race Holiday 5K, 10K, & 13.1M at Everett, WA (49)

Medal Madness 5K, 10K, & 13.1M at WA (50)

Everett, WA

Saturday, December 12th, 2026

10K

Half

Trail

View details for race Medal Madness 5K, 10K, & 13.1M at WA (50)

Holiday 5K, 10K, & 13.1M at Olympia, WA (50)

Olympia, WA

Saturday, December 12th, 2026

10K

Half

View details for race Holiday 5K, 10K, & 13.1M at Olympia, WA (50)

Holiday 5K, 10K, & 13.1M at Lowell Riverfront P...

Everett, WA

Saturday, December 19th, 2026

10K

Half

View details for race Holiday 5K, 10K, & 13.1M at Lowell Riverfront Park, Everett, WA (51)

Holiday 5K, 10K, & 13.1M at Olympia, WA (52)

Olympia, WA

Saturday, December 26th, 2026

10K

Half

View details for race Holiday 5K, 10K, & 13.1M at Olympia, WA (52)

Coffee Lover Run SEATTLE

Seattle, WA

Saturday, January 30th, 2027

10K

Half

View details for race Coffee Lover Run SEATTLE

Brooks Lake Sammamish Half Marathon presented b...

Redmond, WA

Saturday, March 6th, 2027

Half

View details for race Brooks Lake Sammamish Half Marathon presented by REI

2 Next

Explore more in Mercer Island, WA

Jump straight to races by distance, month, or type.

Distance

5K 10K Half Marathon Marathon

Month

June July August

Race type

Trail Boston Qualifiers Fast Courses

Run clubs

Run clubs in Mercer Island

Nearby

Bellevue Seattle Renton Issaquah Redmond Woodinville All Washington races