Williams Route 66 Marathon Participant Shirt Sizing Guide

Please review the shirt size policy and sizing charts below carefully to ensure you have selected the correct size.

  • Sizes are not guaranteed for participants who register after September 1.
  • A separate, limited supply of shirts will be available at packet pickup for exchange, as supplies last, for participants who want a different size than indicated on their registration.
  • Participant shirts are short sleeve technical fabric in both mens and ladies cuts.
  • The Route 66 Marathon will donate $5 to the Tulsa Area Master Recyclers for each participant that chooses not to receive a shirt.
  • Logo Shirts, Jackets and Technical Finisher Shirts will be available for purchase at the Fleet Feet Sports Tulsa, the expo and online.

Sizing Chart for the Williams Route 66 Marathon Participant Entry Shirts