Without a Paddle (2004)

Factual error: Right after the water fight on the first day of canoeing, you can see some kind of palm trees in the background. We also see some when the guys are climbing up the hill right before they find the girls in the tree. There are no palm trees in the wilds of Oregon. (00:23:00)

Sol Parker

Factual error: The hairy girls claim they are in a giant Redwood named Earthchild. The only Redwood trees in Oregon are in the far South West corner very near the coast and mostly over the border of California. D. B. Cooper was supposed to have landed North of Portland. (00:57:40)

Sol Parker

Factual error: During their first night's camping, they encounter a bear..a Kodiak bear. Unfortunately, the only bears found in Oregon's Cascade Mountains are black bears.

Factual error: When the 3 guys have just safely gone through the rapids, they hear a roaring sound. This is leading to a waterfall. The water around them and the leaves in the water are perfectly still. A few seconds later they are going over the waterfall. A river just before a waterfall would have a strong current leading to the waterfall. this should have been the case with the river, but there was no current whatsoever prior to the waterfall.

luchador

Factual error: This is for the whole pot burning scene. When marijuana plants are burned while still being a alive, you can't get high. THC and all the cannabinoids don't become psychoactive until the plant has fully flowered and all moisture content has been removed. Even if the live plants could've caught fire and burned so easily, all the guys would have got from them would've been a headache.