 However, cyclists in the city appear to be influenced by deterrents to cycling and as a result will need a greater level of improved facilities to increase cycling numbers, according to research by Cardiff University.There are 3 major off-road cycle routes in Cardiff, each following a major river in the city.The Taff Trail follows the River Taff south to north from Cardiff Bay, through the City Centre, Maindy, Llandaff, Radyr and Tongwynlais towards Brecon.