Organisers of the Derby 10k have confirmed this year's course was about 400m (1,312.3ft) short, following a review.

Derby County Community Trust launched a review of the event on Sunday after receiving feedback from runners whose GPS devices showed the race was short.

The trust said the course was altered this year due to flood defence work taking place and was required to have an official remeasure by a member of the Association of UK Course Measurers (AUKCM).

The trust said the review confirmed the measurement taken by AUKCM contained an error.

A spokesperson for the trust said the association was a "trusted" partner and recognised mistakes could occur in any large-scale event.

In a statement, AUKCM said: "Following the Derby 10K on Sunday 15 March 2026, concerns were raised regarding the course distance.

"AUKCM carried out a verification measurement on 17 March, which confirmed the course, as run, was approximately 400 metres short. AUKCM acknowledges the error and the impact on runners' results."

A spokesperson for the trust said: "We share the disappointment that this year's race didn't meet our usual high standards and we are grateful for the understanding and feedback we've received from the running community.

"Thank you for your patience and continued support. We look forward to welcoming you back to the Derby 10K next year."