Might Guy (Naruto)
* Speed: Guy's signature move, the Eight Gates, allows him to push his body to superhuman limits. In his final form, he can move faster than the eye can track, and he's even been shown to briefly exceed the speed of light.
* Drawbacks: The Eight Gates are incredibly taxing on the body, leaving Guy on the brink of death. His speed is sustained for very short bursts.
Rock Lee (Naruto)
* Speed: Similar to Guy, Rock Lee has incredible speed and agility. His best speed feats fall short of Guy's, but he's still capable of moving blur-like speeds.
* Drawbacks: Lee also pushes his body to the limit, and his speed isn't on the same level as Guy's.
Flash (DC Comics)
* Speed: The Flash, depending on which version, can move at speeds far beyond light. He's capable of time travel and has even been shown to outrun the concept of time itself.
* Drawbacks: Flash's power levels vary greatly depending on the storyline and writer. He can be vulnerable to speed-stealing abilities or other forms of power manipulation.
Dash (Incredible)
* Speed: Dash can run at supersonic speeds, making him significantly faster than a human. He can even run on water.
* Drawbacks: While incredibly fast, Dash is still a human and isn't on the same level as Flash or Guy in terms of raw speed.
Sonic (Sonic the Hedgehog)
* Speed: Sonic is faster than sound, and in some games, he can reach speeds that make him appear like a blur. He can also curl into a ball and roll at incredible speeds.
* Drawbacks: Sonic's speed depends on the game or story, and while he's incredibly fast, he's not consistently shown to be at the level of the Flash or Guy.
Zoom (Movie)
* Speed: Zoom from the movie "Zoom" is shown to be capable of incredible speed, rivaling Superman in some scenes. He can run on walls and can even use his speed to cause an earthquake.
* Drawbacks: While Zoom is fast, his power is limited compared to the other contenders. He can be vulnerable to kryptonite and other forms of weakness.
The Verdict
In a race, it's likely that The Flash would be the overwhelming victor. He's shown to have the potential for speed that dwarfs the others.
However, if we're talking about a short burst of speed, Might Guy in his Eight Gates form could possibly win. His speed is incredibly potent, but it's unsustainable.
Dash and Sonic could give a good fight, but they likely wouldn't be able to keep up with the top contenders.
Zoom would be a tough competitor, but he's unlikely to outrun the Flash or Guy in their peak forms.
Rock Lee would be a good contender in terms of agility and speed, but he's limited by his physical capabilities compared to the others.
Ultimately, the winner depends on the circumstances and the specific abilities of each character. But based on their feats, The Flash would likely take the win in a long-distance race.