2017 World Hour Record p/b GU Energy Labs: Hellyer Park Velodrome2017 World Hour Record p/b GU Energy Labs: Hellyer Park Velodrome2017 World Hour Record p/b GU Energy Labs: Hellyer Park Velodrome2017 World Hour Record p/b GU Energy Labs: Hellyer Park Velodrome2017 World Hour Record p/b GU Energy Labs: Hellyer Park Velodrome2017 World Hour Record p/b GU Energy Labs: Hellyer Park Velodrome2017 World Hour Record p/b GU Energy Labs: Hellyer Park Velodrome2017 World Hour Record p/b GU Energy Labs: Hellyer Park Velodrome2017 World Hour Record p/b GU Energy Labs: Hellyer Park Velodrome2017 World Hour Record p/b GU Energy Labs: Hellyer Park Velodrome2017 World Hour Record p/b GU Energy Labs: Hellyer Park Velodrome2017 World Hour Record p/b GU Energy Labs: Hellyer Park Velodrome