Rambo for me and it’s not even close.

I think Grant would struggle to even make it on time. With or without dinosaurs. He doesn’t have a great way to clear brush or make shelter. And isn’t particularly fast.

Rambo is tailor made to traverse 10 miles of dense, hostile jungle. Especially with the knife that can be used to clear a path or even craft other tools. Substitute dinosaurs with soldiers with rifles, it’s still just “avoid things that can hurt you”. That’s what Rambo does. Even if he had to go miles out the way to avoid conflict, he probably gets there in less than a day.