The exact MPH that the shape-shifters in The Twilight Saga: New Moon is unknown. They are said to be as fast as vampires, if not faster.
Fast.
30-40 mph
42.
30 MPH... but every horse is different
About 35-45 mph.
4 to 8 mph at a show walk up to 12 mph at a fast walk. A Spotted saddle horse, like any other horse not bred for racing will be able to gallop at speeds of 14 to 25 MPH.
Most horses can gallop at speeds of 18 to 30 MPH, however if the breed was developed to race it can usually gallop at speeds of 30 to 50 MPH.
Arabian horses can typically reach speeds of 20 to 30 MPH.
The average horse can gallop at speeds between 18 to 25 MPH.
A gazillion MPH. Werewolves can gallop at the same speed as vampires, if not faster. "New Moon" describes how fast the werevolves go. You can see them galloping at full speed, but all you'll see is a fast galloping blur. This almost looks like flying, but it isn't. Sadly, the 2009 movie doesn't show any of the werewolves galloping at this speed. If you want to know how fast they can go in MPH, I'm guessing it's 1,000 MPH-if not faster-2,000 MPH. Vampires I'm guessing can only go 1,000 MPH, but not as fast as werewolves. If the movie did show the werewolves galloping at full speed, the gallop would be an enhanced full-flowing, supple action. This "full-flowing, supple action" is natural in the Akhal-Teke (pronounced ahal-tekje in the Turkmen language) Horse.
Anglo-Arabians can reach the same speeds as the Arabian horse, roughly 20 to 30 MPH.
The color of a horse in no way affects how fast it can run, nor does the gender of the horse. Most horses, regardless of color or gender can gallop at speeds of 20 to 30 MPH, while horses specifically bred to race can gallop at speeds of 35 to 45 MPH.