The cancellation of the race yesterday was announced by the organisers on Twitter and Facebook and it was met with anger.
South Yorkshire Police said that despite the cancellation, a large number of participants still ran the half marathon.
Organisers thanked runners and spectators for their "comments and questions", adding: "We'll provide more information as soon as we have it."
The online post announcing the cancellation, which came exactly one week before the London Marathon on Sunday, said: "It is with huge disappointment & regret that we have been forced to cancel this year's race due to a problem with the delivery of water.
"We would like to express our sincerest apologies to everyone involved in the race who will be affected. We will update you future plans asap".
South Yorkshire Police, which was initially present on parts of the marathon route to assist with the road closures to motorists, said: "Working with the organisers, officers attempted to speak to participants who had chosen to run and divert them on to a shorter route to the finish line."