I very recently got into road cycling(I am 24, nearly 25 years), and my good friend(Age 47, rides literally everyday 365) from Portland is challenging me to ride our bikes from Portland Oregon, to Tillamook, Oregon where his Cabin is. It's a little over 8 hours riding according to Google. I'm up for the trip, But what do I need to do to train? I've never ridden anything over 30 miles split up in two different trips. It's approximately a 90 mile haul. I will have a new bike by the time we go.