right behind a wooden house in front of the first natural stone bridge
its a hard one
Near the house to the left.
After the double ramp on the right.
On the right beside a water tower.
i dont know XD
Under the little bridge on the right
go after the gas tank in the forest and you see a track in right side and you see a hidden package
its above the 2nd ramp after the tunnel.
Behind a stack of crates on the right side of the track.
its behind the big rock before the finish line.
It is at the left side of the bridge,under it is the first detonator .
After exiting the Tunnel, behind the Gasoline Tank, in a building