The Guryong Pass will be climbed twice in one day from both directions. It will be the first climb of the day, as well the last climb of the day. You will climb the toughest side at the end of the day, marked as a Horce Category climb. A very long climb, lasting for 20.5km against an average gradient of 4.2%. In total you will gain 870 meters of elevation. It’s the final climb of the day, so your legs will be exhausted. The organization really challenges you by holding back this climb.
Probably they just want to be sure, that you will feel the pain at the end of the day. At the same time, be honest, that is what makes cycling great
The other climbs are shorter in distance, but still the shortest has a distance of 4.2km against an average gradient of 10.9%. Maybe short, but still it’s recommended to set the gear as lightly as possible if you want to succeed the JoChim Pass (Bird sleep pass).