The Edmonton Marathon admitted its marathon and half-marathon courses were longer than certified. The marathon was 1.6 percent longer, and the half-marathon 3.2 percent longer. The error was due to miscalculations in adjusting for a bridge detour.

Race director Tom Keogh apologized for the miscalculation, stating the event takes full responsibility. The error affected the Canadian Half Marathon Championships. Neither World Athletics nor Athletics Canada standards address results from inaccurate courses. Read more racing coverage.

Scaled times for the half-marathon suggest Rory Linkletter and Jadyn Keeler could have set new records. However, no governing body recognizes these scaled times. The error also impacted Boston Marathon qualification for some runners. Related: Edmonton Marathon Course Found to Be Over Half a Kilometre Too Long.

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