The total elevation difference for this backpacking trail is 1,398 feet which is an average number. Throckmorton Trail is a one trailhead backpacking trail, so in and out is the way to backcountry hike it normally. You spend the whole hike in roughly the same elevation zone, so you won’t have to worry about different climate zones along your hike. This backcountry trek shouldn't take more than 2.5 hours, but you never know stuff could go wrong and you could get stuck so be prepared for that. Being 2.8 miles long it's a short backpacking and hiking trail. This is not a very long great outdoors trail but you should still bring some emergency supplies just in case something happens. This area does get very dry sometimes, so make sure you check current conditions and fire restrictions with local forest authorities before you head out.