Time or mileage?

[indysteel]

The N.I.T.E. ride two weeks later WILL be on the roads...but they will all be blocked off and there will be about 2,500 of us.

There's a reason I've never done, and will never do, the N.I.T.E. ride.

As for Tour de Cure, why did I have it in my head that only the century was entirely on the track. Are the shorter distances, too?