Washington · Marathon · 10K · 5K
Tri-Cities Marathon
Tri-Cities Marathon is a marathon, 10K and 5K event held in Richland, Washington. It was last held on October 25, 2026 and is usually run in October; the next date hasn't been announced yet. About 455 runners take part across all distances.
- Usually held
- October
- Location
- Richland, WA
- Field size
- ~455 runners
Race details
- Last held
- October 25, 2026
- Usually held in
- October
- Location
- Richland, Washington
- Distances
- Marathon, 10K, 5K
- Field size
- About 455 runners
- Course
- Marathon: ~400 ft total elevation gain, mostly flat aside from bridge ramp crossings.
- Registration
- runsignup.com
Registration, course & weather
- Registration status
- Registration status as last checked September 25, 2026: open
- Start time
- 8:00 AM PDT
- Course profile
- Out-and-back course; Mostly road, some trail; 400 ft gain (official course data); Not USATF certified; Boston qualifier
About the Tri-Cities Marathon
Join us as we celebrate another exciting year of endurance, community, and achievement at the 43rd annual Tri-Cities Marathon! Runners of all levels are invited to take part in this long-standing tradition, bringing together athletes, families, and supporters from across the region for an unforgettable race day experience. New for 2026 The marathon course is returning to the previous route that includes the iconic Blue Bridge. Certification is currently pending. And that’s not all — we’re thril…
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Guides from the RaceRove blog
- 8 min read How to Choose Your First Marathon A practical checklist for choosing a first marathon based on course, weather, cutoff, travel, field size and support.
- 7 min read How to Find a 5K, 10K, Half Marathon or Marathon Near You A practical way to find running races near you: pick a distance, decide how far you'll travel, read the listing properly and confirm the details before you register.
- 9 min read How to Run a Race in All 50 States How to plan a 50-state running challenge: set your own rules, group states into trips, build a calendar around the seasons, budget for it and keep track of every finish.
- Blog All guides Planning advice for finding, choosing and travelling to races.
Tri-Cities Marathon: common questions
- When is the Tri-Cities Marathon?
- The next date hasn't been announced in the listing yet. The race is usually held in October. Check the organiser's website for the official date.
- Where is the Tri-Cities Marathon held?
- In Richland, Washington.
- What distances does the Tri-Cities Marathon offer?
- Marathon, 10K and 5K.
- How many people run the Tri-Cities Marathon?
- About 455 runners across all of its distances. That figure is an estimate of the field size, not an entry cap.
- How do I register for the Tri-Cities Marathon?
- Registration is handled by the organiser at runsignup.com. Entry fees, caps and deadlines are set there.
- Is registration open for the Tri-Cities Marathon?
- Registration status as last checked September 25, 2026: open. Listed fee for the longest distance, $90 (from runsignup.com, checked September 25, 2026).
- What time does the Tri-Cities Marathon start?
- 8:00 AM PDT.
- What is the course like at the Tri-Cities Marathon?
- Out-and-back course; Mostly road, some trail; 400 ft gain (official course data); Not USATF certified; Boston qualifier.
Plan this race in RaceRove
Save it to your plan, compare it with other races, check typical race-day weather and track your 50-state progress in the interactive app.