Seattle CF StairClimb
Online registration closes September 16th at 12:00 p.m. PT. Climbers may register in person on Wednesday, September 17th at T-Mobile Park, starting at 4:30 p.m. All day-of registrants should plan to arrive no later than 5:00 p.m. to register.
The 37th Annual Seattle CF StairClimb is a challenging and unique fitness event where participants climb up and down the stairs in the 300-level section of T-Mobile Park in a test of endurance and time. The full route is up-and-down 1,500 stairs, and the half route is up-and-down 750 stairs. Climbers will self-identify if they will sprint, jog or walk and will be sent out in waves with the faster climbers going first.
Whether climbing to test your endurance, to improve your time or to simply cross the finish line, this event is a great way to spend the day with co-workers, friends, or family while helping the Cystic Fibrosis Foundation fund the research and care needed to help advance a cure for this disease. At the end of the climb, participants gather at our official after party at The Hall on Occidental to celebrate.
Event Information
• View Past StairClimb emails you may have missed:
5 days out: September 12th Email
3 Weeks out: August 29th Email
5 Weeks out: August 13th Email
7 Weeks out: July 29th Email
Participant Categories
• Climber - those who will be climbing with us in-person on 9/17/25
Registration Fee Structure:
$45 registration fee until 6/30/25
$65 registration fee from 7/1/25 - 9/15/25
​$75 registration fee to sign up in person at the event on 9/17/25
Online registration will close Tuesday, September 16th at 12:00 p.m. PT
Additional fundraising is encouraged, but not required. Every climber who raises an additional $100 on top of their registration fee will earn an event t-shirt. Climbers who would like to pay their own fundraising minimum may do so during registration by making a self-donation. Each climber will have their own fundraising page they can share to ask for support.
• Spectator - Those who will be coming to cheer on the climbers at T-Mobile Park, but will not complete the climb.
• Virtual Climber - Those who are unable to join us on 9/17/25 at T-Mobile Park, but would still like to do their own fundraising.
IMPORTANT NOTES:
• Participants under the age of 14 are not allowed to complete the Seattle CF StairClimb
• All minors (Children ages 14 - 16) can participate with an adult.
• Children ages 16 and over can participate without an adult.
More specific details and requirements will be sent to those who register to ensure everyone's safety and well-being at this year's Seattle CF StairClimb.
Thank you for your efforts to raise awareness and funds so that we can get one step closer to curing cystic fibrosis. Your participation is critical to advance our mission, and now is the time to act. Sign up today to take steps towards a cure for cystic fibrosis!
