Sheffield's half marathon was cancelled on Sunday morning after the organisers failed to secure enough water for the 5,000 runners.
It is with huge dissapointment & regret that we have been forced to cancel this year's race due to a problem with the delivery of water.
South Yorkshire Police were unwilling to provide support to the event without sufficient water supplies.
But some runners decided that they didn't need official backing for the 13 mile run, so set off anyway.
Several runners set off to run the course despite announcement Sheffield Half Marathon was cancelled
The BBC then claimed that South Yorkshire Police were fighting back by "attempting to set up road blocks to stop runners trying to cover the route".
And the people of Sheffield set up unofficial water stops for the rebel runners.
Amazing people buying water & giving it t runners #sheffieldhalfmarathon @SheffieldStar @BBCSheffield @BBCLookNorth
1 man has took it up on himself to supply the Sheffield half marathon with water #goodguy #sheffieldhalfmarathon
Being Sheffield this water shortage happened while it was raining.
Unofficial water stations at Sheffield's half marathon as a water supplier failed to turn up!
And the unofficial race kept on going.
Determined runners and volunteers doing the Sheffield half marathon inspite of the cancellation! Great effort!!!!
The rebel runners of cancelled Sheffield marathon on Eccy Road. Spectators handing out the water.
But what about all that water for the runners? Well, er, the delivery was a little bit late. And it eventually turned up, an hour after the race was cancelled.
Race director says water due for Sheffield Half Marathon has just arrived & they're working to get it to the finish line for those running.
Someone is in a lot of trouble.
Awkward #ilovesheffieldhalf #sheffieldhalf