September 2026 races in Seattle

There are 35 running events listed in Seattle for September 2026 — 34 5K, 16 10K, 14 Half Marathon, 5 Marathon — starting with Medal Madness 5K, 10K, 13.1M & 26.2M at Everett, WA (36) on Sat, Sep 5, 2026. Every listing shows the date, venue, and distances, with a direct link to registration.

• Sat, Sep 5, 2026 Medal Madness 5K, 10K, 13.1M & 26.2M at Everett, WA (36) 600 128th St SE · Everett, WA · From $30 5K10KHalf MarathonMarathon Road
• Mon, Sep 7, 2026 Redmond Harvest Half Marathon Marymoor Park · Redmond, WA · From $59 5KHalf Marathon Road
• Sat, Sep 12, 2026 BK5K Lacey, WA 8345 Steilacoom Road SE · Lacey, WA · From $5 5K Road
• Sat, Sep 12, 2026 Cascade Express Marathon & Half Marathon Homestead Valley Trailhead · North Bend, WA · From $119 5K10KHalf MarathonMarathon Road
• Sat, Sep 12, 2026 National Chocolate Day: Run for Chocolates 5K/10K/13.1 SEATTLE Lincoln Park (Course Map will be emailed) · Seattle, WA · From $30 5K10KHalf Marathon Road
• Sat, Sep 12, 2026 Run for Mental Health 5K/10K/13.1 SEATTLE Lincoln Park (Course Map will be emailed) · Seattle, WA · From $30 5K10KHalf Marathon Road
• Sat, Sep 12, 2026 Oktoberfest Fly Away 10K Run & 5K Run/Walk 192 Brewing Company - Lake Trail Taproom trail access · Kenmore, WA · From $40 5K10K Road
• Sat, Sep 12, 2026 Medal Madness 5K, 10K, & 13.1M at Everett, WA (37) 600 128th St SE · Everett, WA · From $30 5K10KHalf Marathon Road
• Sat, Sep 12, 2026 25th Remembrance of 9/11 1100 N Meridian Ave · Puyallup, WA · From $35 5K Road
• Sat, Sep 12, 2026 9/11 Heroes Run - Snohomish, Washington Willis D. Tucker Community Park · Snohomish, WA · From $36 5K Road
• Sat, Sep 12, 2026 Recovery 5k Illahee Preserve Heritage Park · Bremerton, WA · From $30 5K Road
• Sat, Sep 12, 2026 Noah's 5K Duck Dash Run/Walk 601 Oravetz Rd SE · Auburn, WA · From $25 5K Road
• Sat, Sep 12, 2026 Run for the Buns: A ridiculously short 0.5K for a meaningful cause 35214 SE Center St · Snoqualmie, WA · From $20 5K Road
• Sat, Sep 12, 2026 Beat the Blerch Tolt-MacDonald Park · Carnation, WA · From $40 5K10KHalf MarathonMarathon Road
• Sat, Sep 12, 2026 9/11 Heroes Run - Tacoma, Washington Wapato Park · Tacoma, WA · From $36 5K Road
• Sun, Sep 13, 2026 SPARRKS First Annual 5K Stride to Recovery 8714 87th Ave SW · Lakewood, WA · From $10 5K Road
• Sun, Sep 13, 2026 Move With MADD Seattle 5K University Of Washington (Red Square) · Seattle, WA · From $15 5K Road
• Sun, Sep 13, 2026 Seattle Sounders FC Rave Green Run presented by Providence Swedish 1901 Oakesdale Avenue Southwest · Renton, WA · From $20 5K Road
• Sat, Sep 19, 2026 2026 Scooty's Run 5K Virtual · From $25 5K Road
• Sat, Sep 19, 2026 Fall - Mud Mountain Dam Marathon & Half Marathon 30525 S.E. Mud Mountain Rd. · Enumclaw, WA · From $70 5K10KHalf MarathonMarathon Road
• Sat, Sep 19, 2026 The Brooks Orca Half Marathon presented by REI 1222 Harbor Ave SW · Seattle, WA · From $63 5KHalf Marathon Road
• Sat, Sep 19, 2026 Medal Madness 5K, 10K & 13.1M at Everett, WA (38) 3505 Lowell Snohomish River Rd, · Everett, WA · From $30 5K10KHalf Marathon Road
• Sat, Sep 19, 2026 Step By Step's Race Farm 12 · Puyallup, WA · From $10 5K10K Road
• Sat, Sep 19, 2026 Dragonslayer Fantasy Dash and Strut 6505 NE 65th St · Seattle, WA · From $30 5K Road
• Sat, Sep 19, 2026 There's No Place Like Homeward Pet - 5K Walk/Run Wilmot Gateway Park · Woodinville, WA · From $35 5K Road
• Sun, Sep 20, 2026 Quilcene Oyster Races 151 E. Columbia St. · Quilcene, WA · From $25 5K10KHalf MarathonMarathon Road
• Sun, Sep 20, 2026 Run of Hope Seattle 5900 Lake Washington Boulevard S · Seattle, WA · From $20 5K Road
• Sun, Sep 20, 2026 Tacos & Cervezas 5k 14735 NE 145th Street · Woodinville, WA · From $40 5K Road
• Sat, Sep 26, 2026 Oktoberfest Run 5K/10K/13.1 SEATTLE Lincoln Park (Course Map will be emailed) · Seattle, WA · From $30 5K10KHalf Marathon Road
• Sat, Sep 26, 2026 Run for Donuts 5K/10K/13.1 SEATTLE Lincoln Park (Course Map will be emailed) · Seattle, WA · From $30 5K10KHalf Marathon Road
• Sat, Sep 26, 2026 Pacific Runderland 5k & Kids Run 601 Oravetz Rd SE · Auburn, WA · From $10 5K Road
• Sat, Sep 26, 2026 Second Annual Beat Beethoven 5k 501 S I St · Tacoma, WA · From $35 5K Road
• Sun, Sep 27, 2026 Puyallup Valley Half Marathon and 10K 1100 N Meridian Ave · Puyallup, WA · From $40 10KHalf Marathon Road
• Sun, Sep 27, 2026 Run with the Fishes Annual 5K, 10K, & Kids' Fun Run 2182 NW Sammamish Rd. · Issaquah, WA · From $20 5K10K Road
• Sun, Sep 27, 2026 Run or Wine 5k & 10k - September 2026 14735 NE 145th Street · Woodinville, WA · From $38 5K10K Road

Quick answers

How many races are there in Seattle in September 2026?

35 running events are listed in Seattle for September 2026, from Medal Madness 5K, 10K, 13.1M & 26.2M at Everett, WA (36) on Sat, Sep 5, 2026 to Run or Wine 5k & 10k - September 2026 on Sun, Sep 27, 2026. Every listing links directly to registration.

What distances can I race in Seattle in September?

The September 2026 calendar in Seattle includes 34 5K, 16 10K, 14 Half Marathon, 5 Marathon.

What is the first race of September 2026 in Seattle?

Medal Madness 5K, 10K, 13.1M & 26.2M at Everett, WA (36) on Sat, Sep 5, 2026 at 600 128th St SE.