Start in the main National Trust visitor car park at Killerton. Leave by the visitor entrance, cross the lane carefully and follow the surfaced trail through Sparrow Park orchard to Budlake. Use the pavement over the M5 bridge, then turn onto the signed estate trail towards Newhall. At the waymark take the path around the cottage, keeping off the private southern driveway. Continue on the separate path beside the B3181, then turn into Mooredge Lane and the permitted trail through Martinsfield Farm.
Follow the gates and shared surfaced path towards Broadclyst, cross the small River Clyst bridge and take the short orchard path towards Clyston Mill. This is the turning point. Return along the same trail to Killerton. The watermill and orchard give this farmland walk a clear destination, with hedges, estate cottages and open fields along the way.
Allow about 2 hours 30 minutes. The route is mostly flat on surfaced shared paths, with short quiet lane sections. Watch for vehicles at the car park road crossing and on the lanes, and give cyclists and horse riders room. Large puddles can form in wet weather. Keep dogs under control around livestock and close gates.
Killerton parking is pay and display, currently £5.20 for a stay over two hours; National Trust members must check in for free parking. Check the car park signs and allow time to return before its closing time. Toilets and a coffee shop are at Killerton during opening hours. Clyston Mill is closed for the remainder of the 2026 visitor season, so plan for an outdoor walk rather than an interior visit.
Route and access information: National Trust, Killerton to Clyston Mill trail and current Killerton and Clyston Mill visitor pages, checked 6 October 2026.