Wow, this is incredibly useful for planning touring routes.

I often ride 100+ mile trips to areas I don't know very well and the hardest part is knowing what roads are more-or-less bikeable to plan a route.

Google Maps bike directions are basically worthless on long trips since they divert you way too often into neighborhoods and side streets. Strava is a perfect data set for this use case.

This is damn useful as-is, but if someone could turn this data into long-range bike directions I would absolutely pay for it.