I am into bikepacking and most of my long rides start in Banff.
My first real "long" ride was 120 miles. It was on a surly Karate Monkey loaded with tent, sleeping bag, gear, etc...
For my type of riding, I explain it like this...
It's not how fast you go.
It's not how far you go.
It's how long you go.
If I can stay in the saddle for 10 hours, I can go a long way.