Kaikyo Line (海峡線), on a self-modded 4-car JR West Series 223,
53.85 kilometers of tunnel (Seikan Tunnel, the longest undersea
railway tunnel in the world), total of 76 kilometers and 37 minutes
of (non-stop) driving, incessant EB warnings, (noisy train fans)
and maximum speed of 180 km/h (of course, cannot be done in real
life)...

Early by 351 seconds, under-run 20 cm (and still stopping in
time~!).