Trackers suggest many participants did not run full courseSome athletes have said technology was not working properly
More than a third of runners at this year’s Mexico City Marathon have been expelled after organisers say they cut out sections of the 26.2 mile course.
An investigation was launched after complaints that runners had used cars, public transport and bikes to cheat during the race on 27 August. Tracking data then showed that thousands of participants had not passed some of the 5km checkpoints that monitor whether runners have completed the entire race.
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