My personal best has been 214km in 18 hours (Alaybey, Malkara to Taksim Square, Istanbul), the very last leg of my 13k+ ride between Lisbon and Istanbul. Can't

My personal best has been 214km in 18 hours (Alaybey, Malkara to Taksim Square, Istanbul), the very last leg of my 13k+ ride between Lisbon and Istanbul. Can't imagine what it takes to ride 900km, seems to require superhuman strength