The Bath Marathon, (aka Two Tunnels Marathon) is the UK's longest 'underground' race and a beautiful run, in, under and around the World Heritage City of Bath, taking in its finest sights and those of the surrounding countryside. With over 4k of underground running, you are in for a truly unique running experience, as you travel through the newly restored railway tunnels that pass beneath this Georgian City. Also along the route are beautiful city parks, the World famous architecture of Bath Abbey and Pulteney Bridge, and the rolling countryside of the Avon Valley. Also half marathon, 10k, 5k and fun run.