Thanks for the invite, but I'm seriously unfit. Cycled 1.9miles this week and I was coughing after I got back inside. Not good. Legs were jelly when I walked up and down the stairs in the house.
Hmm ... I think doing SITD on Sunday would
NOT be your best option then!
Assuming that you weren't coughing and jelly-legged from having picked up some bug, have a go at 2.5 miles next time? I find that I can step up my distance by more than 10% per week if cycle regularly.
You have to start from where you are now, and build up from there. It might seem like a nearly impossible task but is amazing how quickly your body will adapt if you do the work and get enough rest in between efforts. I know that from personal experience, having lost all my fitness in 2012 due to illness. I could not ride my bike for 8 months, and at first I couldn't even walk 20 yards without sitting down to recover. Within a year though I was back up on the hills and enjoying my cycling again.
How about setting yourself the challenge of being ready to ride the 2018 edition of SITD? A year is definitely long enough to gain the necessary fitness if you plug away at it. In fact, there is a sister cycling event in October, also starting and finishing in Mytholmroyd - 'Season of Mists'. It is very tough but I reckon with 6 months of training you might be up for it!
If you feel ready to do a shorter ride in the summer and want some company, I'm sure that I could organise something with my local cycling pals.
Good luck!