From the Organizer
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
Events
Weather
It's too far out for a forecast, so here's what weather on this date is normally like in the area. A race day forecast will replace this as race week approaches.
Typical High
59°
Typical Low
39°
Chance of Rain
26%
Based on US Climate Normals data from Richland, 2 mi from the venue.
Host City
Population
61,912
as of 2023
Elevation
400 ft
Nearest Airport
PSC
Tri Cities Airport · 9 mi
Major Hub
GEG
Spokane International Airport · 124 mi
Time Zone
Pacific Time
From Endurance Grid
A mid-size host city. Enough lodging and amenities to keep race weekend easy, without big-city sprawl.
Race Location
Your Next Start Line
Every finish line starts with a single decision. Claim your spot at Tri-Cities Marathon, put it on the calendar, and turn “someday” into a start date.
Coming Up
Medical Lake- Trailblazer Triathlon/Duathlon/5K
118 miles away
Black Diamond Triathlon
146 miles away
Righteous Richland Sprint Triathlon
Less than a mile away
Littlefoot Triathlon - CDA
153 miles away
From Endurance Grid
Endurance Grid is here to help you understand the sport, decide if it's the right fit, and learn how to prepare. For course distances, logistics, and race-day specifics, always defer to the race organizer's event page.
Three sports, one race — swim, bike, run in sequence, with transitions that are a discipline of their own.
Open water, open roads, and competition with yourself. Cross the finish line knowing what it took to get there.
Swim, bike, run — back to back. The sprint distance makes it far more accessible than most people think.
Frequently Asked Questions (FAQs)
Tri-Cities Marathon
Oct 25, 2026