Ir a menos de 60 km

[ROBINDESBOIS]

In Englilsh?
To drive less than X can we say to drive under/ below 60 km?

[Rusty]

All of your suggestions work.

'Drive under' is the most common.

[JPablo]

In the case of 60 kms, is "driving under 37 miles an hour"... that's really slow! ;)