BMC Timemachine TM01 Ultegra Di2

£6,899

If Batman decided to take a break from crime fighting so he could achieve his lifelong dream of doing an Ironman triathlon, this, surely, is the bike he’d choose to do it on. No inch of this near-£7k carbon behemoth has been left untouched by the aerodynamicists, so it’ll cut through the air like… well, like a man in a cape swinging from a building on a bit of cable attached to his belt.

Perfect for…setting your Ironman personal best