I have a shoot coming up this weekend that I'm figuring out the how's and what's for this week that touches on this subject a bit.
The event is a 50 (yes, 50!) mile running race through the San Juan range in a loop around Lake City. My assigned location is a high alpine ridgetop at 12,500'. The race director originally said it was a one hour hike from the trailhead and campground and the runners will be coming through this area starting around 6:30am. So my plan was to camp at the campground with all the comforts of having my truck right there and then get up early and hike to my location. That way I could take my usual photo pack (Mindshift Backlight 26L).
Over the past couple of weeks I have been hiking and scouting the area. It turns out from the trailhead to the photo zone is 5 miles and almost 3500' of elevation gain which I can hike in about 3 hours. So that kind of puts a damper on my plan because instead of starting the hike at 5 I'd have to start at 3 instead. That's a painful time to start a hike. The race director is alo an ultra runner so I think that hour he referenced must how long it takes to him run down from there.
So now my plan is to backpack up to about 12,000' the night before so I'll be close to my location when I wake up in the morning. But that throws off my plan to use my regular photo pack. Instead I'll be putting my cameras and lenses in a ICU and carrying that in my 65L Osprey backpacking pack with all my overnight and survival gear. I'm going to have to pare down the kit and bit and bring just the necessities to shoot the race and maybe some starscapes while I'm up there. But I still want to bring two bodies, UWA zoom, a middle ground prime (43mm), and a 70-200/2.8 so it's going to be a hard hike. But at least I won't have to rush that really long and difficult part and can take my time.
So despite having this nice camera pack I'm going to have to change things up. I guess that's my point. Be ready to be flexible and change your approach as the job and your survival (and relative comfort) requires.