Fraser's Hill is about 100 kilometres north of Kuala Lumpur, and the drive takes around two hours under normal conditions. The route runs north on the highway towards Kuala Kubu Bharu, then turns off at The Gap — the point where the road begins its climb into the hills. From The Gap, the final eight kilometres to the summit are on a single-lane road with passing places, and traffic is managed on an alternating hourly system: uphill in even hours, downhill in odd hours (or the reverse — check locally, as the schedule can change). Missing your window means a wait of up to an hour in the car park at The Gap or at the top, so time your arrival accordingly.
There is no train or reliable bus service to Fraser's Hill itself. From Kuala Lumpur, the most practical approach is a rented car or a taxi arranged for the day. A few tour operators run day trips from KL, but the hill station works better as an overnight destination — arriving in the afternoon, settling into the quiet, and spending the early morning (when birds are most active) before heading back.