[bayourod]

I've read that they travel 600 miles per hour and also that when you see one coming that if you walk fast you can get far enough inland before it reaches shore to be safe. ???

[Strategerist]

They only travel 400+ miles per hour in the deep (miles deep) open ocean. They're not even noticeable when they're moving that fast.

They travel about 40 mph when they're hitting land. Too fast to outrun, still.

However, if you start walking or running inland when you see the water rapidly recede preceeding the tsunami, in most cases in most locations you'll be safe.

[Darkwolf377]

The most interesting video of the recent tsunami showed the pure power of the thing, and it's not in some Hollywoos spectacular way. The waves coming in looked like any old wave--they just kept going. The clip I've got shows what looks like the water simply RISING all at once, not on one point like a cresting wave or something, but like the whole ocean suddenly gained mass. I don't think you can run from it unless you know ahead of time it's coming. If you're SEEING it approaching, you ain't gonna outrun something as big as what you describe above.

I don't really care, though. If I lived my life looking out for everything that could possibly kill me I wouldn't do anything.