Born in Lancashire and now Kent, I notice the difference. You can ride for miles on the plains of Lancashire and is fairly flat, but if you want the hills, you can easily ride into North Wales or the Peak district where they are some real challenges. There are a few hills, which I still remember - The Cat & Fiddle, Billenge Bump, Frodsham Hill - all very challenging.
Kent however has no "mountains", but you can't ride for more than half a mile without going up or down. Living on the Northdowns, there are some serious climbs. On my local training loops, some of these are demanding and make you drop to the biggest cog and then get out of the saddle. A five minute climb at 5mph is quite draining and there a few steeper ones (1:6's) that I always avoid.
Kent however has no "mountains", but you can't ride for more than half a mile without going up or down. Living on the Northdowns, there are some serious climbs. On my local training loops, some of these are demanding and make you drop to the biggest cog and then get out of the saddle. A five minute climb at 5mph is quite draining and there a few steeper ones (1:6's) that I always avoid.