In reply to mypyrex:
Hi there
Although I haven't done the TMB, I completed the glacier haute route this year, exactly 12 months after finishing radiotherapy, 16 months after finishing chemo.
I had worked hard to get my fitness back again - mainly running up and down hills but also some hill walking, and bouldering at least once a week too.
The Haute route was fine for me - we were a fast group according to the guide, and I didn't bonk or struggle during any of the days, BUT I was very careful about resting during the trip. On every day bar one, I slept for at least 90 minutes as soon as I arrived at each hut. I also ate everything put in front of me, even if I wasn't hungry. Although the rest of the group took the piss a bit about my afternoon naps (they didn't know I was recovering from cancer!) the sleep was absolutely crucial. On the one day I didn't sleep I felt quite ill in the evening, and was very concerned going to sleep that evening, as I knew if I felt that way in the morning I would have to pull out of the route. But a good nights' sleep sorted it.
As sleep was so crucial for me, I took high quality ear plugs and mask, and had 1/2 a sleeping tablet every night - to make sure I slept enough.
I also had very warm gloves with me, as the chemo has damaged the nerves in my hands so the cold is very bad for them. If you have this too, take winter gloves as well as summer ones, and put them on before you need them
I hope this helps - sounds like the walking you have been doing will be good prep for the TMB. Enjoy and get some great pics too!