I had Finlandia skis under me and they worked extereme well. So the grip waxing was right one, but 1500 skiers in front of me made track so hard that skis didn't work
The grip was ok first kilometer, but after that I didn't have grip at all until I reached Heinsuo (12 km left). Then I started to even enjoy the skiing and I was just one minute slower than Matikka from Heinsuo.