1 Park near the courthouse and head for the lovely red, gold and green bridge (from 1829). Cross the road and go down the peaceful river path opposite with the river on your right. When you reach the Blaydon Footbridge (built in 1970 and named after a local dignitary), take a few minutes to head to the main road and turn left. Here you will find the ruins of the little medieval Church of the Holy Sepulchre, and opposite, the site of Red Castle, Thetford's second fort, raised in the 12th century.
2 Return to the footbridge and cross over it, keeping the river on your left as you stroll through lovely water-meadows and past a weir. When the path bears right to meet a road, continue straight ahead along a grassy track. You are now on the Little Ouse Path to Brandon, which is rich with the scent of meadowsweet in springtime. Go beneath the roaring bypass, and past the still, brown lake where local folk sit to fish.
3 You leave the sounds of the town behind you as you reach Abbey Heath Weir. When the path bends, keep to the river track, which is littered with sandy molehills. You may see one of these elusive creatures if you are walking near dusk - but plenty of owls live in the woods, so they usually remain underground. When the path veers to the right, keep walking through pretty woodland owned by the Forestry Commission. You will eventually reach a pair of battered council signs warning of the danger of fire. Turn right on a sandy track that leads up a slight hill.
4 When you reach a T-junction, turn right along the dirt road used by Forestry Commission vehicles. You will notice that the trees on one side are taller than those on the other, evidence of planting in different years. Stay on this track until you hear the bypass traffic thundering to your left. The track ends at the main road, but a path to your right leads you through a gate and down an incline, where you will find yourself at the underpass again.
5 Retrace your steps along the river to Blaydon Footbridge, but do not cross it. Continue across the grass straight ahead. Eventually, you reach the remains of Thetford Priory, open any reasonable time, free of charge. Go towards the electricity station and under the subway to Minstergate. Walk past Kwik Save and the Charles Burnell Museum until you reach the Bell. Turn right and walk to the bridge. The car park will be on your left.