1 – At the peak of Mount Chiliad there is a wooden platform with two telescopes on it. You will find the tract there.
2 – Stand right in front of the earlier mentioned wooden platform, so the stairs leading up to it are right in front of you. Now run down the hill on the left side of that platform and you should notice a couple of conifer trees growing next to each other. Next to those trees there's another tract.
3 – This map unfortunately doesn't contain the island where the next tract is. Below you find a screenshot with the tract marked on the game map.
4b – If you go inside the tunnel from the entrance marked on 4a, you will have to drive slowly and keep looking on right hand side of the wall. You should notice small steps and a door, next to which there's another tract.
5 – This tract is at the end of this bridge. Run to the end and go down the small stairs to a wooden platform, where the tract is.
6 – Next to the metal container there's an entrance to the stairs that lead up. This tract is lying right next to those stairs.
7 – You will find a small lake with an island in the center of it. This tract is right next to the stone monument on that island
8 – Next to the road there's an old church. You will find this tract near the entrance to that church, on the right, right next to the hedge.
9 – This tract is at the top of the highest building in Los Santos. Use a helicopter or a plane to get there. The tract is right in the center of the helipad.
10 – Dive underwater at that spot. You will notice a wreck of a roller coaster. Swim around it and pay attention to the purple cays. You should notice the glow of the tract that's lying next to one of those cays.
It is recommended to use a bathyscaphe or a boat that will automatically equip you with a diving gear.
4a – Here is an entrance to a tunnel in which you will find the next tract.