The Racing Bros challenge ALBW Link to cross Hyrule in under 75 seconds. The time limit for the intermediate course is 65 seconds.
The map for ALBW is slightly different from the one for ALttP, so I went searching and came across one with the route already laid out--all I had to do was measure the path. Neat :distracted
Anyway, Chaos has Lake Hylia at 2748.207m.
(2748.207/60)645=29543.22525m
29543.22525/65=454.5m/s
or about mach 1.34.
Decent long-distance feat for Link without the Triforce.
In related news, ALBW is fucking amazing and everyone should get it.