Struggling afterwards?

I thought I would try to cycle to Cambridge - 23 miles and then do a bit of shopping. I did the cycling bit in about an hour and a half, although on the graph/map attached you will see that I forgot to put my timer on for a 2 mile or so section!! It looks like I caught a ride with something/one and just missed a few miles... I really got in the groove and although it was really hot found it easy enough...however...this morning I have woken up with big cramps so I clarly have not had enough salts...forgot to take my rego drink which I will clearly need to take to Lon/Par with me. Not long now - 2 weeks and 2 days and I am feeling a little nervous. Pretty sure I can do day one but not too sure if I will be able to get going on days 2/3/4!!

I also cycled with my iPod for the first time and it was a revelation, definitely need to use that on the trip!