Shadow Walk = Fatigue?

[Xavram5]

One of the nice things about Shadow Walk is it gives the party a way to travel great distances in a relatively short period of time. Since the spell lasts 1 hour per level, my question is this : If I'm a 12th level caster, I would have a range of 600 miles but it would take 12 hours of "travel" (walking?) to get there. Would I be fatigued, since anything over 8 hours of travel is considered a "forced march"? Or does this not apply due to the "arcane" nature of the travel?

Want to head this off at the pass before my DM quizzes me about it...heh

[Drone]

As a GM, I would say that it would cause fatigue as a forced march. The characters are still physically traveling through a border of the Shadow Plane, though much faster. The Shadow Plane shares the same physical laws as the Prime and the act of traveling through it would still require walking, the steps the character is taking just cover more distance.

The caster could just end the spell after 8 hours since it is dismissible and avoid the fatigue. The party has still traveled 400 miles.

But in my opinion, you really should share this concern with your GM before you try it. Nothing irks me more than players assuming how rules work. That's the GM's job.