Gambling can be one of the better ways to get some money in San Andreas and one of the places you can go for this is called Inside Track Betting. As the name suggests, this is a place you can go to bet on horse races. There are only two Inside Track locations in the game, one of which is in Downtown Los Santos, underneath the Mulholland Intersection. The other one is located in Montgomery, Red County, which is north of Los Santos. All you have to do is win any bet you make, with the minimum amount needed for a bet being $5. It’s a good idea to bet on the horse with the best odds (2 to 1, for example) if you’re just looking to get the trophy/achievement.