The altitude profile for that century is here.

3800 feet of climbing made up mostly of a lot of rollers. The big climb in the middle averages around 3% grade. If you are concerned about your low end, find a hill of similar steepness and see how you feel.

Get those prep miles in.

Don't go out too fast. Maintain a steady comfortable pace.

Drink and eat plenty during the ride.

For a lot of people a century is no big deal, but I've always felt proud about each one I've done. You should too.

Speedo