Half Marathons in Washington
Washington has 26 upcoming half marathons scheduled for 2026. Most of the calendar falls in the warmer months: 16 of 26 races (62%) take place between May and September, with September (9 events) the busiest month. No single city dominates the calendar. Kirkland leads with 3 races, followed by Seattle (2), North Bend (2), and Redmond (2). The remaining 65% of the calendar is spread across smaller cities.
Half marathons by month in Washington
Sep (9) · Aug (6) · Oct (6) · Mar (2) · Apr (1) · May (1) · Dec (1)
Showing 24 of 26
Running
OVERCOMER 5K & 13.1 Mile Half Marathon
Pasco, WA
Running
OVERCOMER 5K & 13.1 Mile Half Marathon
September 12, 2026
Pasco, WA
Running
16th Annual Race For A Soldier Half Marathon, 10K & 5K, Virtual Run, and Kids Run
September 13, 2026
Gig Harbor, WA
Running
2026 The Snohomish River Run Marathon, Half Marathon, 10K and 5K
October 11, 2026
Snohomish, WA
Frequently asked questions
How long is a half marathon?▾
A half marathon is 13.1 miles (21.1 kilometers). It is one of the most popular race distances in the US, attracting over 2 million finishers annually. Browse half marathons on RACE to find one near you.
How should I train for my first half marathon?▾
Most beginner training plans are 10-12 weeks long and gradually build your weekly mileage. A typical plan includes 3-4 runs per week with one long run that peaks around 10-11 miles before race day.
What is a good half marathon time?▾
The average US half marathon finish time is about 2 hours 10 minutes. Beginners often aim for under 2:30, while competitive runners target sub-1:45. Focus on finishing strong rather than a specific pace for your first race.
What are the biggest half marathons in the US?▾
The largest include the United Airlines NYC Half, RBC Brooklyn Half, Disney Princess Half Marathon, and the Rock 'n' Roll series events in Las Vegas, Nashville, and San Diego. You can find all of these on RACE.