National Express operate direct services between Frome Market Place and Trowbridge Frome Market Place to Trowbridge is a distance of 7 miles (12 kilometres). National Express operate 1 direct buses per day. The fastest journey each day takes 0hrs 20mins. See our route guide and coach timetables below for more details. Doing a search on Coachfairer is the best way to find the fastest journeys by all operators and the cheapest prices!