Hello, I've never asked a question on a forum but I feel desperate. My 70 mile (never have done this distance before) cycling event in on Sept. 19th. I'm less than 3 weeks out and have a lower back strain which happened three days ago. I'm in pain and have stayed off the bike since this occurred. Any advice on how soon to get back on? How far I should go on the first time back on back after time off (I had planned on a 60 mile ride)? Will I lose everything I've gained from training if I take a week or 10 days off? How should I train until the day of the event to avoid this back strain again? Thank you for any advice you have.