Do you think I can do this fixed?

3rdworldsuitcase whats the course like.what time do you expect to do it in.whats your avg speed right now and do you have a good base milage to increase on?

thats a link to the course. It's not too hilly. I expect to do it in 15hrs, well so I've been told. Right now I can quite happily cycle 50ish miles on a saturday/sunday and not really have any issues. I hardly ever go further than that except for special occasions. Once or twice a year, to dunnich or to my dads outside Oxfordshire kind of thing.