Seattle CF StairClimb

Seattle CF StairClimb 2026

The 38th Annual Seattle CF StairClimb is a timed stair-climbing event held in the 300-level section of T-Mobile Park in Seattle. Participants climb up and down a set number of stairs on a defined route. Climbers self-identify their pace and are released in waves with faster climbers going first. Participants gather at an official after party after the climb.

Distances offered

• Full route: 1,800 stairs up and down
• Half route: 900 stairs up and down

Registration is offered in several categories with associated fees: Early Bird registration has a reduced fee and requires registration by June 30, 2026; a standard online registration fee applies while online registration is open; day-of registration is available at a higher fee. Climbers who raise an additional $100 on top of the registration fee earn a t-shirt; participants may also make a self-donation of $100 during registration to meet that threshold.

Age and participation rules restrict solo participation to those 16 and older. Minors ages 14 to 16 may participate only when accompanied by an adult. More specific safety and event requirements are provided to registered participants. The event raises funds for the Cystic Fibrosis Foundation to support research and care related to cystic fibrosis. Visit the organization's website for the most recent information.