Other mistake: In the scene where Riddick, Johns, and the bad goatee-dude go on the "bikes" to get the missing engine parts (nodes), they travel quite a distance (about two minutes of movie time). After the "bikes' get shot up and are no longer usable, it's not that far at all for Johns to get back. In fact it's just a few steps, and monster free too. (01:03:00 - 01:07:00)
Other mistake: The trip back on foot from the nodes for Johns was way too fast, and he likely would not have had enough ammo to handle the entire trip back. From Riddick's perspective, John's left, he cauterized his wounds with some explosive debris, fought several creatures and then ascended the hill continuing to fight creatures. By the time he hit the top of the hill, Johns had made the entire trip on foot, which was long by bike, had Dahl join him, locked in the node, and piloted the ship back to Riddick.
Other mistake: Matthew Nable plays "Boss" Johns, the father of William J. Johns in Pitch Black, who was played by Cole Hauser. But the two actors are only a couple of years apart in age - Nable doesn't look anywhere near old enough to be Hauser's father. Would have made more sense for him to be an older brother.
Suggested correction: We're just not shown the remainder of his trip back to the base.
Phixius ★
Riddick cauterized his wound, fought off some creatures and made his way up a large hill. In that short period of time, Johns walks back the distance that took 2 minutes by bike, installs a node, gets Dahl, starts up the ship and flies back to Riddick. The original entry is valid.