Hi Lynne - welcome to the world of cycling.

To answer the question 'Am I fit enough?' then as Jobob suggested a few rides with you local club will soon be able to answer that question.

The world of cycling, in my experience in UK & Italy I have met some of the most wonderful people. I've been given banana's by strangers when I've looked like I was going to bonk. I've had cheers of encouragement from bystanders when doing long cycle-sportif courses in the mountains and been offered pushes from my tired clubmates when I recently tried my hand at mtb riding.

I think the phrase 'What goes round, comes round ' is a good one. It's very sensible to make sure you're physically up to a challenge before embarking but at the same time I've found people are always willing to wait or give you a helping hand.

If, on the other hand you're strong and you come across someone who's having a hard time then why not give them a shout of encouragement. I know they'll appreciate it.

PS - Never actually done a road race. My experience is in cycle-sportifs, which although timed are only actually 'raced' by a small minority of super-fit, semi pro's. The rest of us are usually happy just to cross the finish line.