Offroad motorcycling as crosstraining

Here's day one of a 3 day ride. Average heartrate = 130. Max was about 165. At 10,000 feet, 165 bpm feels like 180 at my usual altitude. This graph covers about 4hrs 30 min. Just because a motorcycle has an engine and a seat, doesn't mean it can't be a workout to ride it.

The toughest part is long steep descents where you can wind up doing what feels like trying to bench press your max and then hold it for a minute.