Are these values typical ? 400 km / s )
300 km - 20 hours 400 km - 27 hours 600 km - 40 hours 1000 km - 75 hours 1200 km - 90 hours ( or 80 or 84 hours by choice ) 1400 km - 116:40 hours ( optionally 105:16 or 93:20 hours ) Organisers are usually free to reduce the maximum speed .