In reply to Kimono:
Don't rest the day before, do a race tune-up ride. This will keep your legs firing but you will remain fresh. Having a day off can make you sluggish.
Race tune-up ride:-
15 mins warm up
1 1/2 hours at endurance/zone 2 pace interspersed with 3 x 1 minute sprints with a least 5 minutes easy spinning in between and 3 x 30 sec all out efforts with at least 5 minutes easy riding in between.
15 mins cool down
On the other days between now and then, keep the intensity of what you normally do but shorten the length by a 1/3 to a 1/2. So if you would normally go out for a ride tomorrow, make it shorter but don't ride with a lower intensity than you would to train normally. Ideally you'd follow that principle for a week before the race but it does depend on the riding you normally do, how hard and important the race is and how often you race.