From the A470 heading north from Dolgellau, turn left onto the A496 at the roundabout at Llanelltyd heading for Barmouth.
After passing the village of Taicynhaeaf and before you reach the village of Bontddu, almost exactly 4km from the roundabout, there is a right hand turn into a horseshoe shaped layby with a small picnic area, managed by Snowdonia National Park, known locally as Fiddlers Elbow.
There are places for a small number of vehicles to park.
The reserve can be accessed by walking from the layby up the public footpath along the private access road going immediately up the hill. As you walk up the access road, look for the RSPB sign on the gate on the left which takes you along the public footpath into the reserve.
The nearest stop is at Taicynhaeaf on the Dolgellau to Barmouth (X94) route. The stop is 0.5 miles (0.75 km) from the reserve.
The nearest station is at Barmouth. From Barmouth the reserve is 5.5 miles (8 km) to the east between the villages of Bontddu and Taicynhaeaf on the A496.