Boston Marathon will not accept adjusted times from Edmonton Marathon. Runners must submit official results for qualifying. Edmonton is adjusting times due to course error. Boston’s registration ends Sept. 18.

Edmonton Marathon ran 674.7 meters longer than 42.2K. Boston will only accept unadjusted times. Edmonton is working with Athletics Canada for adjustments. Boston’s position was confirmed by Chris Lotsbom. Read more culture coverage.

Boston fills the field from fastest applicants. The 2026 cutoff was 4:34. Extra distance at Edmonton affects qualifying. Boston applies its own adjustments for course elevation. Related: Edmonton Marathon Faces Course Measurement Dispute.

This original Runner World brief is based on reporting from Marathon Handbook. Visit the source for its complete reporting, context and any later corrections.