..or there is a more agricultural route over a weir and up some paths through the fields, if you are the muddy sort of cyclist.
The hill at Pokesdown is a bit of a bar-steward on the way home though. Boscombe - Hurn takes about 30 mins on a bike, about 20 mins in a car.
Do not attempt the dual carriageway. You will die and it goes past a sewage plant which smells bad.
Lockers next to the showers are a bit in short supply, but the water is always hot.