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About RaceIndexOur methodologyData coverageCyclingTriathlon
  • Half Marathon
  • 21.1 km
  • Seattle
  • Event weekend starts
  • Open entry

UW Medicine Seattle Marathon and Half Marathon

This race edition

Race date
Date not confirmed for this distance
Race timezone
Timezone not confirmed
Edition status
Status not confirmed

Entry options

2026 edition

Entry options are not yet confirmed for this edition. Check the organiser before making plans.

View verified GPS mapOfficial event website & entry ↗
Plan my trainingPlan my paceData current as of

Decision summary

UW Medicine Seattle Marathon and Half Marathon at a glance

Typical conditions
77/100

Historical race-date favourability, not a forecast

Evidence depth
20 verified facts

Stored GPS route

Quick answers

What runners ask first

UW Medicine Seattle Marathon and Half Marathon route map

raceindex.org has a GPS course file for UW Medicine Seattle Marathon and Half Marathon, so runners can inspect the route line on the map. Elevation charts and ascent figures appear only when that file includes usable elevation data.

Where does the UW Medicine Seattle Marathon and Half Marathon route go?

The UW Medicine Seattle Marathon and Half Marathon route starts at Seattle Center (5th & Harrison), adjacent to the Space Needle and finishes at Bell Harbor / Pier 66 (Elliott Hall) on the downtown Seattle waterfront. The setting includes city and lakeside.

What should runners know on race day for the UW Medicine Seattle Marathon and Half Marathon?

Event routes are closed to vehicle traffic until 2:30pm on race day; after that runners may finish by obeying normal pedestrian traffic laws with limited on-course aid.

Race character

Scenery

  • City
  • Lakeside
  • Parkland
  • Waterfront
  • Forest

Atmosphere

  • Big City
  • Scenic Tour
  • Community

Entry, logistics and records

Entry requirements

Entry status
Open entry: The held registration model is open entry and this edition is not marked sold out.

Race day logistics

Closed roads
Event routes are closed to vehicle traffic until 2:30pm on race day; after that runners may finish by obeying normal pedestrian traffic laws with limited on-course aid
Expo / packet pickup
Health & Fitness Expo at The Westin Seattle on Fri Nov 27 and Sat Nov 28, 2026; all pre-race events including registration and bib pickup take place there
Medal
Participants receive a finisher medal
Finisher tee
Participants receive a long-sleeve race shirt

Access and course status

Start
Seattle Center (5th & Harrison), adjacent to the Space Needle
Finish
Bell Harbor / Pier 66 (Elliott Hall) on the downtown Seattle waterfront

What are typical race-day conditions?

  • 6°CTypical temperature
  • 20 kphTypical wind
  • 5 mmTypical rainfall
  • 77Favourability /100
Typical conditions for the race date and locality, within the endurance-optimal window. These are climatological norms, not a forecast, and are shared across every distance at this event.

How we calculated this

Published facts and derived model outputs on this page are tied to stored sources or a published, version-locked methodology. We show the provenance so runners, coaches and organisers can check it. Data on this page is current as of .

Derived numbers use scoring-methodology-v1.0.

Sources used on this page (2)

Read the full methodology →