The Chichester area has many great bike routes, both on-road & off. Taking your bike off-road is a wonderful waybto explore the countryside surrounding Chichester. The South Downs, to the north of Chichester, are particularly worth a visit. There are also some good routes around Chichester harbour including a largely off-road route from Chichester city centre to West Wittering.
In addition to the larger bike shops there are a number of smaller & more specialised bike shops offering a more personal service. These also provide after sales service to help keep your bike in the best condition & running smoothly.