Bloody hell, 56, at those sort of speeds even an extra 1 mph takes some doing (balls). Must say at 44 it still felt very stable and surprisingly safe but on the Mtb with a 30t front ring just ran out of gears. It wasn’t especially steep and definitely felt could’ve gone quicker with a larger sprocket or steeper hill but that said, you are still aware one mistake, a mechanical….
Box Hill round here is the famous one due to its inclusion in the 2012 Olympics and is the most ridden on Strava apparently, but it’s not actually especially steep and is only relatively short blasts between hairpins with no room to really get moving. I only got to 36mph on there and was anticipating way more.
Would like one last crack going all out, maybe a steeper hill, or changing the front ring or doing both. Not sure why, seems daft really but it was one hell of an adrenaline rush and quite addictive. 56 though, that’s next level
Edit: Yes Komoot, most people seem to use Strava but I just find it pretty good for trail planning especially.