So in answer to your query, Flanders is hard, Paris-Roubiax is brutal, Strade Bianche is killer but frankly none match the singular insanity of the Valparaíso Downhill in Chile.
WHich is a good thing because it probably saves a hundred lives.
This is a some kind of Red Bull kamikaze, death wish, Danny MacAskill on crack, freak show lunacy that demands your full attention. The headcam vids are flat out awesome sauce.
It’s a torture test downhill run thru town along narrow sidewalks with jumps, ramps, dirt roads, staircases and raving loco fans on a course so sketchy no reasonable daredevil would accept the challenge.