When one of your ride mates gets a flat, and you say: "I will keep going, you guys catch up with me later" and they do only on the final sprint.
When you friend says, oh the second part of the climb is just 4 or 6km, and it turns out to be 8,5.
When the climb is 30km long and you run out of all food and water.
When the descent is so breathtaking that you catch all the mosquitos with your smile.
When after every turn the climb doesn't end, but just gets steeper.
When you get million of #foreverbuttphotos cause your friends don't realize that it's pretty sketchy to descend on 50 km per hour, hold camera in one hand and look into the viewfinder.
One of those days when you go from deepest pain cave, into the highest euphoria state.