hey bro. I did it now and got it out the way. Some people say 90k but a lot of people told me say 60k. Since most of us don't drive like the average person I would say do it at 60k just to be safe. I would just say please don't wait too long. Better off spending the money to change the belts then get a whole new motor if you don't have the money for it.

This as takin from www.accordinglydone.com
90,000 miles / 3 years
"1. Replace timing belt and balance shift belt (replace the timeing belt every 60,000 miles on 97 and under accords) "