Macmillan Way West is a 102 mile, fully waymarked branch path leaving the main path at Castle Cary in Somerset and heading across the Somerset Levels, the Quantocks and Exmoor, to Barnstaple on the North Devon coast. The main Macmillan way runs from Boston on the Lincolnshire coast to the Dorset coast at Abbotsbury.
It is called the Macmillan Way because all funds raised are donated to Macmillan Cancer Support, a vitally important charitable organisation whose role is to help people living with cancer by providing them with expert care and practical and emotional support.