Mortimer to Aldermaston

t=1.33 Length: 14.8km (9.2 miles)
Toughness: 3/10
Transport: Take the 9:30 from London Paddington, change at Reading to arrive in Mortimer at 10:17
Return from Aldermaston is at 28 minutes past the hour with a change in Reading

From the description:
From St Mary's Church in Stratfield Mortimer, the route follows a clear stream - Foundry Brook - eventually to the amphitheatre and the 2.5km of Roman walls surrounding the 107-acre site of the Roman town of Calleva Atrebatum, and the whitewashed twelfth-century church at its entrance. The lunch stop is at a pub on Silchester Common and the afternoon route is mainly through woods of Scots pine, and commons of gorse and birch trees. Aldermaston, the teatime destination, is reached over the weirs of the River Kennet.