Let's consider the average person can walk 48-52 miles on a day. That's based on walking 12 hours at 4mph, which isn't absurd and allows for rest and breaks. Now, let's remember that these Shinobi travel at absurd speeds for absurd amounts of time, so I believe Shinobi should be able to travel roughly 15 mph without exhaustion, 'cause in the anime they just seem to run for fucking hours through tree canopies. That equates to---this time I may have overthought this.

The concept I'm trying to commune is simple. She can walk around all she wants with it, but let's say a Shinobi of equal skill level is getting exhausted, she'd probably be even more so, in terms of something as simple as running. Oh? Is that a mountain? Sucks to be you, Shira. Holy fuck, swampland. Don't sink, Shira. Why the fuck is it snowing? Sucks to be you, Shira.

Get it? Terrain and distance running is gonna suuuuuck for Shira.