From the a645 road bridge in knottingley round the back of kellingley pit down to sudforth lane is over grown and not worth riding, plus you have to drag your bike over the railway bridge. You can follow the river aire at stocking lane and come out right in front of kellingley pit, turn left on the a645 for about half a mile then turn right onto sudforth lane, go over the railway xing and down to the bridge with the traffic lights on, hook a left back onto the canal down to whitley bridge, you need to cross over the selby road bridge and get onto the south side of the canal from templar close, ride under the road bridge and your next obstacle is the a19 bridge but there are some steps up it, carry your bike up cross the a19 and then down the steps at the other side. That brings you to whitley lock, you can now ride all the way to Pollington, you do need to get back onto the north bank at the heck lane bridge, ride under the east coast main line bridge and your there.