Hey, AutumnBreez! There's a "metric century" which is 100 kilometers and a regular 100 mile century. I'm planning to do the MS Society 150 ride this year and their website has a great training brochure at: http://events.msillinois.org/site/Do...pdf?docID=1301. This is to get you ready to do 150 miles over two days but it's a great gradual build-up for long distance riding. I've heard that the Bicycling Mag website (www.bicycling.com) also has some good training advice.

Good luck with your century plans!!