- "The highest mountain in the whole state. Very popular for people who like to get high. I mean people who like to feel on the top of the world. I mean people who have nothing better to do than walk up a goddamn hill. It's crime-free. Why is it on a crime report? Nobody is going to steal it."
- — GTA San Andreas.
The Mount Chiliad is a tall mountain featured in Grand Theft Auto: San Andreas.
In GTA San Andreas, Mount Chiliad is located in west Whetstone, San Andreas. It is reportedly based upon the real-life Mount Diablo in Contra Costa County, California or Mount Whitney. It is the highest point in the state of San Andreas as well as the GTA series. Immediately to the north is the bustling metropolis of San Fierro, while just to the south, at the mountain's base, is the small town of Angel Pine. Races are held here on Mountain Bikes during the daytime. These races start from the mountain's summit and end at the mountain's base. It offers spectacular views of the little city of Angel Pine.
- Badlands for Frank Tenpenny and the other C.R.A.S.H. officers
- The Chiliad Challenge, a side-mission involving traversing the mountain on bikes
- Camper (found at the summit)
- Journey (found at the summit)
- Mesa (at the base and near the entrance of the mountain, appears only when wanted for export)
- Mountain Bike (found at the base near the entrance to the mountain and also at the summit, which starts The Chiliad Challenge when hopped on during daytime, and at the foot of the mountain)
- Sanchez (at the base and near the entrance of the mountain)
- Quadbike (show up occasionally at the south-east forest of the mountain, next to the north shore downhill track that leads to a unique stunt jump ramp)
- A body armor at the summit.
- A Parachute is at the summit also.
- A unique stunt jump at a forested area south of the summit.
- It is the tallest point in San Andreas, the second being The Cordillera.
- Due to its extremely tall feature, airplanes will collide into the mountain much more frequently than any other place in the state.
- The large plaque next to the flag at the summit can also be used as a ramp, providing the opportunity to perform a potentially high-paying Insane Stunt Jump that is difficult to survive in anything but an enclosed vehicle.
- Often vehicles without people can be seen driving along the bike tracks halfway up the mountain.
- There is a downhill track that leads to a unique stunt jump ramp at the southeast forest of the mountain. To find the track, on the route from the entrance to the sumit, go up to the third curve then go straight into the forest instead. If the player has unlocked the third Mount Chiliad challange - the "Cobra Run", simply mounting the mountain bike at the summit will automatically teleport the player there.
- If you drive off of the summit in any vehicle and land on one of the edges of the terrain of the mountain hard enough, the player will fall into blue hell for a few seconds, then suddenly appear high in the air somewhere in San Andreas, before crashing back down to the ground.
- In GTA IV, Niko recieves an email from Chiliad8888, which calls the recipient "Pilgrim" and makes many anti-government comments. He sends Niko a link to whattheydonotwantyoutoknow.com, a website that contains maps of locations of Unique Stunt Jumps, Flying Rats, and vehicles in Liberty City. The username Chiliad8888 is a reference to either Mount Chiliad or the staff worker at Rockstar of whom Mount Chiliad was named after.
- Until GTA V, Mount Chilliad was the only mountain in the GTA series.