1. It was already cut to 219Km (the return will be at the 83rd st not at 92nd). However, the local season just started last weekend and domestic riders are not used to these distances. So look for "international" cyclists not those riding in the local scene.
2. The climbing is not too much and less for Colombian standards. It's not for climbers, last year a sprinter without a team (Edwin Avila, just hired by Illuminate and without a kit) won on a parcours designed for Quintana (and he being local and having like 30 "teammates"... 3 riders from the WT, the continental team and a couple of teams from Boyacá that owe him a lot... Just look at footage how he was giving orders the whole race).
I think Gaviria has a chance if he picks the right wheels. He has to pass the last hill closer to Chaves and Henao.
Pantano might be the outsider... He can climb and has a good kick