In brief
The 2026 Edmonton Marathon route was measured 674.7 metres (0.41 miles) longer than the official 42.195 km distance, according to organisers. Runners noticed GPS readings above 26.22 miles, leading to complaints. Organisers blamed construction work near Wellington Bridge for the detour that added the extra mileage and apologized for the mistake, pledging to work with Athletics Canada to recognise results properly.
The organisers of the Edmonton Marathon have admitted the course measured more than half a kilometre too long for the 2026 edition.
The annual event in Alberta, Canada is often used as a qualifier for the prestigious Boston Marathon.
Runners noted GPS distances over 26.22 miles, prompting complaints after the race.
Organisers initially dismissed concerns but later admitted an extra 674.7 metres (0.41 miles) was mistakenly added to the course.
Race director Tom Keogh said the running times might not truly reflect performance and assured participants that organisers would address the issue.
Construction work around Wellington Bridge forced a detour, adding the unintended distance, said organisers.
The longer course could mean runners missed Boston Marathon qualification and personal bests; qualifying times are based on official chip times, not watch data.
Organisers are working with Athletics Canada to recognise results correctly.
BBC Sport contacted the event for further comments.