New Walk & Millennium Bridge riverside loop

A pocket-sized local nature reserve on the south-west edge of the city, giving a mile of woodland and meadow paths in twenty-five easy minutes; a remnant of genuinely ancient woodland with bluebells in May and shade in a heatwave. Park on Acomb Wood Drive or Foxwood Lane and walk straight in, or take the number 4 bus to Foxwood; there are no gates or stiles a big dog cannot manage. Dogs are off lead throughout with no livestock, but the reserve is small, popular and close to housing, so recall matters; the woodland paths get properly claggy after rain and this is not the one to pick in a wet January.

Yorkshire Wildlife Trust's celebrated fenland reserve on York's south-west edge — Sir David Attenborough called it a cathedral of nature conservation — explored via a 750-metre boardwalk circuit. Dogs are allowed but must stay on a lead and keep to the boardwalk to protect the fragile peatland and its wildlife. Free entry at all times, with a small gravel car park off the A1036 near Askham Bar.

A two-mile perimeter circuit of one of York's four medieval strays, a big open triangle of grazing land on the northern edge of the city, level throughout and done in under an hour. Park on Wigginton Road or come out on the number 5 or 6 bus from the centre; the stray also links straight through to Haxby Road and the Foss on foot. Dogs get a proper off-lead gallop across the open grass, but cattle are turned out here through the summer and cows with calves will take an interest in a loose dog, so lead up and skirt them; the tracks round the edge drain reasonably and stay usable in winter, though the middle turns to a quagmire.