RachelGorman published How many calories does running a half marathon burn - and how can...

The countdown is on to this year's half and full Robin Hood Marathon, which takes place on Sunday. For thousands of people taking part it's crunch time. Will all those hours, days, weeks and months, of rainy runs, early starts and healthy eating have paid off?Probably.If you're honest, you could hobble round in the very worst case scenario.So let's talk about what's really important - and it's not PBs or LBs or LPs or PBJs.It's the pay-off.An average 150lb chap or lass running the half marathon.