Love this thread!
Born and bred in Exeter and me and my childhood cycling buddies had a lot of fun on our gas-pipe 3 speeds!
Yes, there are certainly some challenging climbs across the whole of the county, why they don't get the recognition of say Yorkshire, the Peaks and the Lakes etc. has always been a mystery. There are some belters in South Dorset as well.
Knowing when to ride the bigger roads vs. the smaller lanes is a planning art. Years ago after moving to Abingdon my neighbours started cycling and one of them (control freak newbie) took it upon himself to plan a ride for us from Ilfracombe to St Austell and beyond to Padstow and eventually Newquay, and he certainly wasn't going to take any advice from me (regardless of my years of cycling and local knowledge). I kept stumm.
Starting from Ilfracombe harbour, the climb-out is fun isn't it? That nearly ended day 1
Then as he's planned all the back-roads we both missed all the lovely views along the coast to Barnstaple and in fact for most of our journey...up and down hill, high banks, gravel, farm vehicles, slow descents and 'Devon Miles'. Oh how I chuckled as we had to get into our 'support car' to reach our destination.
A lot of hills were walked over the subsequent days and routes radically reshaped!
I rode with a warm smugness for the next few days....