Located in Somerset county, in South West England, Porlock Hill is said to be the steepest A road in the country.
Part of the scenic A39 road, the road is totally paved. It road features narrow parts and two 180 degree switch backs. At 25%, Porlock Hill is reputably the steepest A road in England. It’s located west of the village of Porlock in Somerset. It climbs approximately 1,300 ft (400 m) in less than 2 miles (3.2 km) up onto Exmoor. This part of the road is very steep hill with gradients of up to 1 in 4 and hairpin bends. The climb is simply terrible. It’s a real leg breaker. The finishing 2kms are at 8% with pitches above 20%. In Porlock itself, burning brakes of vehicles that have just descended the hill can often be smelled.
The road opened in 1843. The alternative to this leg breaker is to take a toll road. According to the signs, it is a mile further, but the gradient is a much more leisurely 1 in 14. Caravans advised to use the toll road and small vehicles and cyclists can take as an alternative route.