Seattle CF StairClimb
Seattle CF StairClimb is a running race on September 16, 2026 in Seattle, WA.
- Date
- September 16, 2026 (16 days to go)
- Location
- 1250 1st Ave S, Seattle, WA
- Sport
- Running
From the Organizer
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.
Events
Weather
Typical Conditions
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
72°
Typical Low
54°
Chance of Rain
29%
Based on US Climate Normals data from Seattle Boeing Fld, 3 mi from the venue.
Host City
About Seattle, WA
Population
741,440
as of 2023
City Elevation
40 ft
Nearest Airport
SEA
Seattle–Tacoma International Airport · 10 mi
Time Zone
Pacific Time
From Endurance Grid
A big city race. Expect multiple lodging options and plenty to do the day before.
Race Location
Your Next Start Line
What Are You
Waiting For?
Every finish line starts with a single decision. Claim your spot at Seattle CF StairClimb, put it on the calendar, and turn “someday” into a start date.
16
Days to train
- Race
- Seattle CF StairClimb
- Date
- September 16, 2026
- Location
- 1250 1st Ave S, Seattle, WA
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From Endurance Grid
About This Sport
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.
With running, there's a distance for every fitness level, a community at every start line, and nothing beats the feeling of crossing a finish line you trained for.
Running is an endurance sport that rewards consistency, and showing up every week compounds in ways that will surprise you.
Running
From 5K to marathon, running races are an accessible entry point into endurance sport. There's a distance for every fitness level and a community at every start line.
Coming Up
More Running races near Seattle, WA
Frequently Asked Questions
What is the Seattle CF StairClimb?
When and where is the Seattle CF StairClimb?
How do I register for the Seattle CF StairClimb?
Seattle CF StairClimb
Sep 16, 2026