marinyork said:
As for 157 miles I've no idea if I could do that.
At one time, I would have doubted my ability to do it too, but I worked my way up to that kind of level. (I've lost 50% of my fitness since then though...

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I gradually increased my mileage until I was okay on hilly (imperial) century rides. After that I decided to have a go at a 200 km ride. The first one wasn't an audax, it was a local 100 mile sportive (
The Pendle Pedal) but I rode 20 km to the start and back again afterwards so that was a total of 200 km. It didn't kill me so I kept on doing '200s' and got to know audax riders who were doing even longer rides - 300 km, 400 km, and 600 km! Some even do monster rides such as Paris-Brest-Paris (1200 km) and London-Edinburgh-London (1400 km)

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I'm not interested in doing those kind of distances. Perhaps as a succession of shorter daily rides yes, but I'd get saddle-sore trying to do them in 'one bite'. I'm not into sleep-deprivation or riding in the dark, however a ride of about 150 miles could be done fairly comfortably in about half a day and in daylight in mid-summer.
I come from Coventry but have lived in Yorkshire for over 20 years. It dawned on me a few years back that Hebden Bridge to Coventry in a day would easily be 'doable' for a fit cyclist - it just took me a few years to get round to it, in June 2007. With a couple of diversions, I ended up doing about 141 miles including some tough climbs in West Yorkshire and the entire length of the Peak District. I felt pretty good when I got to my destination, so much so that my family thought I'd brought my bike down on the train

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I'd say that anybody in good health who is a regular cyclist should be able to build up to doing something like the WYCR if they work hard over a 6 month period and it's going to be at least 6 months before we'd be doing the ride. There's plenty of time to get ready for it, it's more a question of having the desire to do it. I know some very fit people who just aren't interested in stretching themselves. They just stay at the same level year after year, enjoying themselves and keeping healthy. They are not into cycling for the challenge, they just like keeping fit and being out in the countryside.
If you fancy having a go at the WYCR with us next June, draw up a plan of how to get from where you are now to where you'll need to be then.