The 2026 Tri-Cities Marathon is officially open for registration

Race Day: October 25, 2026

Start Time: 8:00 a.m.

Course Time Limit: 6 hours

Total Elevation Gain: about 400 feet

USATF Certification Number: pending

What’s Included: race shirt, custom finisher’s medal, and reusable tote bag

Course Description: The Tri-Cities Marathon offers runners a scenic course that showcases the beauty of the Columbia River and the communities of Richland, Pasco, and Kennewick. The race begins on Bradley Boulevard in Richland, near the southwest end of the Riverfront Hotel parking lot, and heads south with the Columbia River to the left and Columbia Point Golf Course to the right. The course then turns onto Columbia Point Drive and continues toward Columbia Point Park.

From there, runners cross the Columbia River on the westbound side of the Lee Volpentest Bridges, reaching the highest elevation point on the course. After descending into Pasco, the route follows Court Street east to the Sacagawea Heritage Trail, where participants join the trail to continue along the river on a scenic stretch of paved trail. The course remains on the trail to the Blue Bridge, where runners cross into Kennewick.

Once in Kennewick, the course travels west through Columbia Park for approximately 2.5 miles to a turnaround point before heading back east to the Cable Bridge. Runners then cross the Cable Bridge back into Pasco and rejoin the Sacagawea Heritage Trail once again, following the Columbia River. The final miles retrace the route along Court Street and cross the Lee Volpentest Bridges before returning via Columbia Point Drive and Bradley Boulevard to the finish line at the south end of the Riverfront Hotel parking lot.

This memorable course combines riverfront views, iconic bridge crossings, and a tour through all three Tri-Cities, creating a unique and rewarding marathon experience for runners of all levels.

Relay exchange sites 1 and 3 are at the Road 54 boat launch in Pasco. Exchange site 2 is near the Columbia Park Bandshell in Kennewick. If your team does not have 4 members, you may allocate the relay legs however you wish. Parking is generous at both exchange areas. You are responsible for arranging for transport to/from these points.

October weather in the Tri-Cities can be highly variable. While there is a general range that most late October days fall within, runners and spectators alike should be prepared for a wide range of conditions on race day.

Recent race day weather:

• 2023: 25°F at the start with a slight breeze from the east

• 2024: 58°F at the start with sustained east winds around 20 mph

• 2025: 48°F at the start with 8 mph wind and intermittent light rain