10-25 miles/hr

BBC News

BBC Nature - How do you build a dinosaur?

"An average human who can run about 15 miles an hour would probably be a pretty good match for a skinnier version of a T. rex."

BBC Nature - How do you build a dinosaur?

Dr Hutchinson says: "We've found using our computer models that a human sprinter which can do 25 miles an hour (40km/h) or a little faster would probably be pretty well matched for a muscular Tyrannosaurus.

BBC - Science & Nature - Horizon - T.rex - Warrior or Wimp?

Dr Hutchinson’s work suggests that an upper speed limit for T. rex would fall in the 10-25mph range.

Wikipedia

Tyrannosaurus - Wikipedia, the free encyclopedia

Most recent research on Tyrannosaurus locomotion does not support speeds faster than 40 kilometres per hour (25 mph), i.e. moderate-speed running.

Tyrannosaurus - Wikipedia, the free encyclopedia

Most recent research on Tyrannosaurus locomotion does not support speeds faster than 40 kilometres per hour (25 mph), i.e. moderate-speed running.

Forbes Magazine

What's The Human Speed Limit? - Forbes.com

Some paleontologists had reasoned that the tyrant lizard hit speeds of 45 miles per hour, but Hutchinson says it only managed 10 to 25 miles per hour.

sciencenetlinks.com

Science Netlinks: Science Updates

T. rex’s top speed came out between 10 and 25 miles an hour -- so it probably couldn’t have caught up to a Jeep.

sciencedaily.com

Tyrannosaurus Rex Probably Could Not Run Fast, Scientists Say

"Our model shows that these really fast speeds of 50 miles an hour and probably down to even 25 miles an hour just don't hold up when you really scrutinize them and look at the physics," Hutchinson says.

Tyrannosaurus Rex Probably Could Not Run Fast, Scientists Say

Though not enough is known to give an exact speed limit for T. rex, a range of 10 to 25 miles per hour is possible, according to the authors.

Ask.com

Tyrannosaurus | Ask.com Encyclopedia

Most recent research on Tyrannosaurus locomotion does not support speeds faster than 40 kilometres per hour (25 mph), i.e. moderate-speed running.

enotes.com

Tyrannosaurus - eNotes.com Reference

Most recent research on Tyrannosaurus locomotion does not support speeds faster than 40 kilometres per hour (25 mph), i.e. moderate-speed running.

Answers.com

Answers.com - How fast could a tyrannosaurus rex run

Other mathematical modeling has suggested speeds of about 11 to 25 mph.

Answers.com - How fast could a tyrannosaurus rex run

One of these studies estimated that an adult T.rex could attain nearly 18 mph, assuming that about 25% of the total animal's mass was leg muscle.

LiveScience.com

T. Rex Could Outrun Humans | LiveScience

T. rex would just barely run past a professional soccer player (footballer) in a race, reaching an all-out speed of about 18 mph (8 meters per second), the results showed.

eurekalert.org

Tyrannosaurus rex probably could not run fast, scientists say

"Our model shows that these really fast speeds of 50 miles an hour and probably down to even 25 miles an hour just don't hold up when you really scrutinize them and look at the physics," Hutchinson says.

wpedia.goo.ne.jp

Tyrannosaurusとは - goo Wikipedia (ウィキペディア)

Most recent research on Tyrannosaurus locomotion does not support speeds faster than 40 kilometres per hour (25 mph), i.e. moderate-speed running.

news-service.stanford.edu

T. rex's new image: still ferocious, not quite as quick"When you ...

"Our model shows that these really fast speeds of 50 miles an hour and probably down to even 25 miles an hour just don't hold up when you really scrutinize them and look at the physics," Hutchinson says.

discovermagazine.com

Dinosaurs | Dinosaurs | DISCOVER Magazine

Hutchinson can’t say yet just how fast T. rex could run, but he suspects an upper limit of maybe 25 miles an hour.

the.t-rex.info

Information on the T-Rex : Tyrannosaurus rex

Most recent research on Tyrannosaurus locomotion does not support speeds faster than 40 kilometres per hour (25 mph), i.e. moderate-speed running.

profilefacts.blogspot.com

Profile Facts: Tyrannosaurus

Most recent research on Tyrannosaurus locomotion does not support speeds faster than 40 kilometres per hour (25 mph), i.e. moderate-speed running.

dinosaurus407.blogspot.com

dinosaurus407.blogspot.com

Most recent research on Tyrannosaurus locomotion does not support speeds faster than 40 kilometres per hour (25 mph), i.e. moderate-speed running.

30-45 miles/hr

Wikipedia

Tyrannosaurus - Wikipedia, the free encyclopedia

Additionally, some have argued that Tyrannosaurus had relatively larger leg muscles than any animal alive today, which could have enabled fast running 40–70 kilometres per hour (25–43 mph).

Answers.com

Answers.com - How fast could a tyrannosaurus rex run

Some palaeontologists have suggested that T.rex could probably reach about 30-45 mph.

sciencedaily.com

Tyrannosaurus Rex Probably Could Not Run Fast, Scientists Say

That's long been a topic of scientific debate, with some paleontologists arguing T. rex ran at a zippy top speed of 45 miles per hour and others suggesting a more moderate 25 miles per hour.

ChaCha.com

How fast can a T rex run? | ChaCha Answers

A T Rex can run close to 40 miles per hour.

discovermagazine.com

Dinosaurs | Dinosaurs | DISCOVER Magazine

And predatory dinosaurs became the leopards of the Mesozoic Era, with T. rex hitting 40 miles an hour.

Dinosaurs | Dinosaurs | DISCOVER Magazine

And predatory dinosaurs became the leopards of the Mesozoic Era, with T. rex hitting 40 miles an hour.