The Bike Show has been on air since 2004. At the last count there were 199 episodes. That gives you enough listening to complete the Paris-Brest-Paris randonnée just within the 90 hour cut off time and still have quite a few hours listening to do.
You can find every past show on this website, or via iTunes.
If you’re not an iTunes user then you might like an excellent one page catalogue of all past editions, maintained by listener Keith Alcock.