With the runner pre-heating device, the runners of toboggans are thoroughly heated up to 145°C for top-level sporting events, then treated with special wax and thereby prepared for the race. The heat is transferred by means of convection. The runners are embedded in aluminium and follow the contours exactly. The electronic temperature control unit with digital target and actual value display, PID control behaviour and integrated over-temperature alarm maintains the pre-elected temperature at the exact level required.