To help you leaf-kick your autumnal fitness regime, HuffPost UK Lifestyle has rounded up 10 of the best walks around Britain.
And if clear skies, golden trees and sharp sunshine aren't enough incentive, remember that it's also National Fitness Day.
Free events and activities are taking place across the country and all money generated by participants will go to the Teenage Cancer Trust.
Best British Walks
Bedgebury Pinetum, Kent(01 of10)
(credit:Forestry Commission)
Sheffield Park, East Sussex(02 of10)
(credit:Britainonview/Jennie Woodcock)
Edzell, Angus, Scotland(03 of10)
(credit:Visit Scotland)
Hadrian's Wall Path, Northumberland(04 of10)
(credit:National Trust/Joe Cornish)
Knightwood Oak Trail, New Forest(05 of10)
(credit:Britainonview)
Cardinham Woods, Cornwall(06 of10)
(credit:Zoe Griffin/Forestry Commission)
Hardcastle Crags, West Yorkshire(07 of10)
(credit:National Trust/Joe Cornish)
Winkworth Arboretum, Surrey(08 of10)
(credit:National Trust/Andrew Butler)
Hafod y Llan, Snowdonia(09 of10)
(credit:National Trust/Joe Cornish)
Grizedale, Cumbria(10 of10)
(credit:Gareth Browning/Forestry Commission)