The fastest way to run faster in GTA 5 involves using a well-known speed glitch that works both in Story Mode and GTA Online. This method significantly boosts your character's running speed by combining weapon firing and rapid weapon switching, resulting in about a 10% increase in running speed over normal sprinting.

How to Run Faster (Speed Glitch Method)
1. Equip a firearm (e.g., an assault rifle).
2. Fire your weapon once, which puts your character into an "alert" or combat-ready state.
3. Immediately start unequipping and re-equipping your weapon repeatedly.
4. While doing this, hold down the sprint button to run.
5. This combination of being in an alert state and the animation of switching weapons causes your character to run faster than normal.
6. The effect lasts about 20 seconds, after which you can repeat the process by firing your weapon again.
This glitch works only in third-person view; in first-person, your speed remains normal.

Additional Tips
1. Set your sprint mode to "hold to sprint" in the game settings to make it easier to maintain the faster running speed.
2. You can also start the faster run by throwing a punch while running, but you still need a weapon to switch for the glitch to work.
3. This method allows you to outrun explosions or enemies more effectively, as demonstrated by players running over proximity mines without taking damage.

Alternative Method: Cheat Code (Story Mode Only)
For players on PC, Xbox, or PlayStation who want a quick speed boost without glitches, GTA 5 offers a fast run cheat code:
1. On PC, open the cheat console (tilde key `~`) and type "catchme" to activate fast run.
2. On consoles, the cheat can be entered via the in-game cellphone by dialing specific numbers or using button sequences.
3. This cheat increases running speed but does not stack with the weapon-switching glitch and is limited to Story Mode, not GTA Online.

Summary
This glitch is widely used by speedrunners and players looking to gain a competitive edge in races or evade enemies quickly. It is simple to perform and does not require any mods or cheats in GTA Online, making it a practical technique for all players.

If you want to master running faster in GTA 5, practicing the weapon firing and switching timing is key to maintaining the speed boost effectively.
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