I was mesmerized from the winter high elevation peaks, surviving the cold elements while being hunted narrative. All the way to the lower Death Valley look like that feeling of no end in sight would in fact, go on forever.
With two of the best leading male actors (Picerce Brosnan/Liang Neeson), you always feel you're in the moment. Of course, with any good script, why the chase in the first place is never revealed until the end.
The pace of the narrative really slows to a crawl in the dessert scenes leaving one dumbfounded. I was convinced both were ready to go buy each other a beer after all that!