Так как у него было достаточно врем

Так как у него было достаточно времени (имея много времени), он пошел на вокзал пешком

Результаты (английский) 1:

Since he had enough time (having a lot of time), he went to the station on foot

Результаты (английский) 2:

Since he had plenty of time (having a lot of time), he went to the station on foot

Результаты (английский) 3:

as he had plenty of time (with time), he went to the station on foot