These are the Top Ten steepest hills for the Sheffield area.
Hagg Hill (not old Sheffield) gradient 17.1%.
Victoria Street, Stocksbridge (not old Sheffield) gradient 14.85%.
Blake Street, gradient, 12.79%.
Wellfield Road, gradient 12.5%.
Fir Street, gradient 11.26%.
Cobnar Road (top part) gradient 11.25%.
Upperthorpe, gradient 11%.
Winnats Pass Derbyshire (between the two Mam Tor roads) (not Sheffield) gradient 10.91%.
West Hill Rotherham (from Droppingwell Rd to Poucher St) (not Sheffield) gradient 10.4%.
Jenkin Road (From Tyler St/Holywell Rd to the highest part just past Forthill Road) gradient 10%.