In 32 days · Sun, Oct 25, 2026
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Sunday, October 25th, 2026
Riverfront Hotel, Richland WA
Marathon · Half · 5K
42–60°F · low rain risk
See last 10 years
On this date: rain 2 of the last 10 years
2025
43–56°F
rain
2024
40–55°F
dry
2023
40–52°F
rain
2022
45–58°F
dry
2021
42–63°F
dry
2020
27–41°F
dry
2019
44–74°F
dry
2018
50–58°F
dry
2017
41–69°F
dry
2016
47–65°F
dry
Best months to race in Washington →
About this race
Tri-Cities Marathon Overview
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
- Course Update: The marathon course is returning to the previous route that includes the iconic Blue Bridge. Certification is currently pending.
- New Event: We’re thrilled to introduce the Tri-Cities Spooktacular 5K. If you’ve always wanted to run in this celebrated race but weren’t quite ready for the longer course, now’s your moment! Costumes welcome.
In Memory
Remembering Richard "Keith" Fuller. 1957-2025
1980 Tri-Cities Marathon Champion
Race Details
Date: 2026-10-25
Location: Riverfront Hotel, Richland, WA
For more information, visit the official race page.
Course map
Hotels for race weekend
Live prices near the start line, Oct 24 – 26, 2026.
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