Edmonton Marathon Confirms 2026 Course Was 674 Metres Too Long

Edmonton Marathon organisers have acknowledged that the course used for the 2026 race was 674.4 metres longer than the regulation marathon distance. The admission followed complaints from runners whose recorded distances and finishing times did not match their expectations during Sunday’s event, according to reporting by The Guardian.

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A standard marathon covers 42.195 kilometres, or 26.22 miles. Race director Tom Keogh said the event team’s examination found that the Edmonton route added 0.41 miles beyond that distance. Organisers had initially maintained that the certified course was correct before confirming the measurement problem in a statement issued Tuesday.

The review attributed the extra distance to a detour introduced around construction at Wellington Bridge. Keogh said the event will review its certification process in response, with the goal of preventing the same type of mistake at future editions. He also acknowledged that the finishing times did not accurately represent the athletes’ performances.

The error had consequences beyond an unexpectedly long final stretch. Runners pursuing personal bests completed more ground than the official distance requires, making their times unsuitable as a true comparison with performances on correctly measured courses. The Guardian reported that the mistake may also have prevented athletes from setting records, adding to the frustration expressed after the event.

It also created uncertainty for participants hoping to use Edmonton as a qualifying race for the Boston Marathon. Qualification standards can be decided by small margins, and Edmonton attracts runners seeking entry to Boston. The available reporting did not establish how individual qualification cases would be handled, so the effect on specific applications remains unclear.

Canadian Olympian Natasha Wodak told CBC that she noticed her pace slowing over the final few hundred metres and was surprised by her finishing time. Her account echoed concerns raised by other participants after the race. Organisers now face the task of reviewing how the detour passed through certification while addressing runners whose official results were produced on an oversized course.