2026 UW Medicine Seattle Marathon and Half Marathon
Seattle, WA
Sun, Nov 29, 2026
In 52 days · Sun, Nov 29, 2026
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Sunday, November 29th, 2026
5th Ave & Harrison St., Seattle WA
See race page
40–48°F · rain likely
See last 10 years
On this date: rain 1 of the last 10 years
2025
41–47°F
dry
2024
38–43°F
dry
2023
31–42°F
dry
2022
30–38°F
rain
2021
52–57°F
dry
2020
35–48°F
dry
2019
28–41°F
dry
2018
43–50°F
dry
2017
41–50°F
dry
2016
40–48°F
dry
Best months to race in Washington →
Race-day forecast says layers
40°F at the start.
Gloves, ear warmers, throwaway layers, hand warmers — delivered before race day.
About this race
Event Overview
- Event Name: UW Medicine Seattle Marathon and Half Marathon
- Date: November 29, 2026
- Location: 5th Ave & Harrison St., Seattle, WA
- Registration Link: Register Here
Race Highlights
- Scenic Route: Experience a beautiful course through the streets of Seattle.
- Participant Options: Choose between the full marathon or half marathon.
- Community Support: Cheer zones and water stations throughout the race.
- Post-Race Celebration: Enjoy food and festivities after finishing the race.
Training and Preparation
- Training Plans: Recommended training plans available for all levels.
- Nutrition Tips: Guidance on pre-race nutrition for optimal performance.
- Gear Recommendations: Find the best running gear for your race day.
- Support Groups: Join local running clubs for training and motivation.
Sponsors and Partners
- Major Sponsor: UW Medicine
- Local Partners: Collaborating with many community businesses.
- Volunteer Opportunities: Community members encouraged to get involved.
- Sponsorship Inquiries: Contact us for partnership opportunities.
Course map
Train with a club
Run clubs near Seattle to train with before race day.
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