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About RaceIndexOur methodologyData coverageCyclingTriathlon
  • Relay
  • 42.2 km
  • Tulsa
  • Event dates –
  • Open entry

Williams Route 66 Marathon Relay

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.

Official event website & entry ↗
Data current as of

Decision summary

Williams Route 66 Marathon Relay at a glance

Cut-off average pace
10:40/km

7:30:00 total limit divided by distance. Check gun/chip timing and intermediate limits; allow time for stops.

Typical conditions
84/100

Historical race-date favourability, not a forecast

Evidence depth
15 verified facts

Source facts available

Route details

Known course facts at a glance

Methodology →

Williams Route 66 Marathon Relay has known course details for its relay race. The summary below keeps the focus on what is confirmed for the course.

Official distance
42.2 km
Scenery
City, Historic, Riverside, Parkland

Quick answers

What runners ask first

Where can I find the Williams Route 66 Marathon Relay route map?

Use the official course links on this page for the organiser route page, map PDF or route download.

Official course links

What should runners know on race day for the Williams Route 66 Marathon Relay?

Streets are closed for the event and reopen progressively based on the 7.5-hour course time limit. Neighborhoods along the route host live music, creative aid stations and block parties for runners.

Race character

Scenery

  • City
  • Historic
  • Riverside
  • Parkland

Atmosphere

  • Big City
  • Community
  • Destination

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.
Cut-off
7:30:00

Race day logistics

Closed roads
Streets are closed for the event and reopen progressively based on the 7.5-hour course time limit.
Expo / packet pickup
All participants must collect their packets at the Williams Route 66 Marathon Health, Fitness and Sustainability Expo held on race weekend.
On-course music
Neighborhoods along the route host live music, creative aid stations and block parties for runners.

Course facts

Notable features
  • Optional Center of the Universe Detour adds 0.3 miles to visit Tulsa's acoustic-anomaly brick circle, billed as completing the 'World's Shortest Ultramarathon'

What are typical race-day conditions?

  • 10°CTypical temperature
  • 20 kphTypical wind
  • 3 mmTypical rainfall
  • 84Favourability /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 →