Originally Posted by jimc101

With that info, the bike you have is pretty irrelevant, more relevant is the model number of crank (the 1997 Marin Pine Mountain had a Sugino (White Industries branded) crank as stock which was a compact drive 5 bolt).

Find the model number of the crank (it will be marked on the back of the arms) and use that as a starting point for getting a replacement ring (would look at the other rings, as if you have more than one which needs replacement soon a complete crank could be cheaper in the long run)