Fulbourn Fen and Fleam Dyke: chalk ridge to Mutlow Hill

Start at the small Fulbourn Fen car park near the end of Stonebridge Lane. Follow the lane to the Hind Loders junction, then take the signed footpath towards Great Wilbraham. Turn onto the Fleam Dyke approach across the fields and follow the farm track to the steps onto the earthwork.

Walk south-east along the grassy dyke crest, passing the pumping station and the old railway cutting, to Mutlow Hill. This Bronze Age burial mound is the turning point. Retrace the dyke to its northern steps; this walk stays north of the A11 and does not cross it. Back at the farm track, use the little footbridge and the path around the fenced field to enter Four Acre. Return through East Fen Pasture, the boardwalk and Long Fen, crossing Ox Meadow to Mill Lane and the car park.

Allow about 2 hours for the 6.3km walk, with short stops at the earthwork and meadows. The dyke rises above the fields on a narrow, uneven path, with short steep steps at the cuts. Wear shoes with grip and expect mud, wet grass and slippery boardwalks after rain. Gates, steps and soft ground make this unsuitable for wheelchairs and pushchairs.

Fulbourn Fen opens during daylight hours. The small car park has limited spaces; keep entrances clear and check signs when arriving. Entry to the reserve is free. Dogs must stay on a lead, and cattle or sheep may be grazing. Bring water and snacks; refreshments are available in Fulbourn village away from the route. The ancient oaks in Ox Meadow, wet fen vegetation and seasonal wildflowers give the return a different character from the open chalk ridge.

Route information checked against the Fulbourn Village Library walking guide linked by Fulbourn Parish Council, Wildlife Trust BCN reserve information and Friends of the Roman Road and Fleam Dyke route updates.