Tring /trɪŋ/ is a small market town and civil parish in the Borough of Dacorum, Hertfordshire, England. Situated in a gap passing through the Chiltern Hills, classed as an Area of Outstanding Natural Beauty, 30 miles (48 km) north-west of London, and linked to London by the old Roman road of Akeman Street, by the modern A41, by the Grand Union Canal and by rail lines to Euston Station.