Bound for Boston Marathon (Seattle)
Bound for Boston Marathon (Seattle) race day weather
Cool conditions, slight humidity impact
Runners will face a temperature range from 52°F at the start to 57°F by the finish, with humidity at 79%. A light breeze from the SW may feel refreshing, but runners should prepare for slightly elevated humidity throughout. It's advisable to start conservatively and monitor hydration, especially in the later laps as temperatures rise.
Pace Calculator
Enter a finish time to see what race day does to it.
Get forecast alerts for Bound for Boston Marathon (Seattle)
We'll text or email you when the forecast shifts — so you can adjust gear, pacing, and strategy. Max one per day.
Bound for Boston Marathon (Seattle) route and elevation
The Bound for Boston Marathon (Seattle) course has about 254 ft (77 m) of climbing and 264 ft (80 m) of descent, a net drop of about 10 ft (3 m). It is flatter than 83% of the marathon courses racecast.io has mapped, measured by what the hills cost in time. It has no steep miles: no mile climbs more than 25 ft (8 m).
What the hills cost
The hills change finish times by less than 0.2% here, under half a minute for a 4:00 runner.
Hills only, priced mile by mile on the course map. The pace calculator above adds the race-day weather.
Even-effort splits for a 3:30, 4:00 or 4:30 finish
| Mile | Climb | Descent | 3:30 | 4:00 | 4:30 |
|---|---|---|---|---|---|
| 1 | 21 ft | 22 ft | 7:59 | 9:08 | 10:16 |
| 2 | 23 ft | 18 ft | 8:03 | 9:11 | 10:21 |
| 3 | 23 ft | 20 ft | 8:01 | 9:10 | 10:19 |
| 4 | 17 ft | 23 ft | 7:59 | 9:07 | 10:15 |
| 5 | 19 ft | 23 ft | 7:59 | 9:08 | 10:16 |
| 6 | 22 ft | 20 ft | 8:01 | 9:10 | 10:18 |
| 7 | 23 ft | 15 ft | 8:04 | 9:13 | 10:23 |
| 8 | 23 ft | 23 ft | 8:00 | 9:08 | 10:17 |
| 9 | 23 ft | 23 ft | 8:00 | 9:09 | 10:17 |
| 10 | 23 ft | 23 ft | 8:00 | 9:09 | 10:17 |
| 11 | 19 ft | 23 ft | 7:59 | 9:07 | 10:16 |
| 12 | 19 ft | 23 ft | 7:59 | 9:07 | 10:16 |
| 13 | 21 ft | 20 ft | 8:00 | 9:10 | 10:18 |
| 14 | 21 ft | 22 ft | 8:00 | 9:08 | 10:17 |
| 15 | 22 ft | 19 ft | 8:02 | 9:10 | 10:19 |
| 16 | 23 ft | 19 ft | 8:02 | 9:11 | 10:20 |
| 17 | 19 ft | 22 ft | 7:59 | 9:08 | 10:16 |
| 18 | 18 ft | 23 ft | 7:59 | 9:07 | 10:16 |
| 19 | 22 ft | 23 ft | 8:00 | 9:09 | 10:16 |
| 20 | 23 ft | 13 ft | 8:05 | 9:14 | 10:24 |
| 21 | 23 ft | 23 ft | 8:00 | 9:08 | 10:17 |
| 22 | 23 ft | 23 ft | 8:00 | 9:09 | 10:17 |
| 23 | 23 ft | 23 ft | 8:00 | 9:09 | 10:17 |
| 24 | 20 ft | 23 ft | 7:59 | 9:07 | 10:17 |
| 25 | 19 ft | 23 ft | 7:59 | 9:08 | 10:16 |
| 26 | 20 ft | 21 ft | 8:00 | 9:08 | 10:16 |
| Last 0.2 | 10 ft | 2 ft | 1:51 | 2:07 | 2:23 |
Explore the Bound for Boston Marathon (Seattle) course with the weather and your pace along the route, or compare it with other races.
Get your personalized Bound for Boston Marathon (Seattle) race plan
A mile-by-mile breakdown of where your time goes, weather-adjusted splits, fueling timeline with aid stations, packing checklist, carb tracker, spectator guide, all built around your goal and race-day conditions.
About the Bound for Boston Marathon (Seattle)
The Bound for Boston Marathon and Half Marathon in Seattle is held at Olympia High School in Olympia, Washington, about 60 miles south of Seattle. Both distances are run as repeated laps of a flat, USATF-certified 1-mile loop (course number WA24022RMB), and the marathon is a Boston qualifier. Runners can leave their own drinks and gels at a personal aid table beside the loop, and the field is kept small. Five Star NTP organizes the race, which is held in June.