The Edinburgh Marathon starts at 0900 BST on Sunday

Marathon chief executive Geoff Sims has promised 34,000 energy drinks and 60,000 bottles of water for the 10,000 participants of Sunday's race.

It comes after runners expressed fears over fluid on Runner's World website.

Weather forecasters are predicting temperatures could reach 26C (79F) during the race in the capital.

Raise issues

The concern over water follows news the cash-strapped event will still go ahead after Edinburgh Council waived almost �140,000 in traffic management fees.

Marathon first-timer Carole Burt said concerned runners had been contacting the event helpline to be told by answer machine to raise any issues when they register on Friday and Saturday before the race.

"Obviously this is going to be too late to change anything and we are panicking.

"Lack for water would obviously be a real health issue for the runners, especially if the weather turns out as hot as forecast and will there be enough first aiders?

"I'm sure every extra degree of heat will increase their workload and therefore it would also be nice if a plea went out to the Edinburgh residents to turn out to support the runners in the way that Glasgow seems to embrace races for example with garden sprinklers and impromptu watering holes."

The Edinburgh Marathon route passes the Firth of Forth

One participant said on Runner's World website that they feared there would be a lack of water stops along the route.

Another said: "Bitter experience says don't rely on them for water."

Mr Sims said: "In the past we have used a sub-standard drinks promoter but this year we will have enough fluid for everyone.

"There are 12 drinks stations along the route where everyone will get a drink.

"I am concerned about the heat on the day and I would urge runners to wear sunscreen and arrive hydrated.

"There will be special first aid stations and motorbikes along the route.

"We have been running for three years now without any major hiccups."

He added: "Obviously we are very pleased the council has agreed to cover the cost of the traffic management this year, and we really do feel more support is needed from the council or from the executive."

BBC weather forecaster Peter Sloss said: "The settled weather looks like continuing right through to Sunday with temperatures continuing to rise.

"For example inland areas on Sunday could well reach 26 Celsius, 79 Fahrenheit."