New to Bristol - Need help with training routes!!

Hey
I have only just moved to Bristol from Cambridge and I don't know any routes for road biking. I'm doing the RideLondon 100 in a few weeks :? so need to do at least 50 miles (I know it's not even close to 100 but think I'll be pretty slow as I'm not used to hills around here).
If anyone can recommend any good routes/areas to head to, I don't mind just riding and getting lost but would prefer to head to a nice area.
Thanks in advance for your help

Chris
I have only just moved to Bristol from Cambridge and I don't know any routes for road biking. I'm doing the RideLondon 100 in a few weeks :? so need to do at least 50 miles (I know it's not even close to 100 but think I'll be pretty slow as I'm not used to hills around here).
If anyone can recommend any good routes/areas to head to, I don't mind just riding and getting lost but would prefer to head to a nice area.
Thanks in advance for your help

Chris
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