Oi! At the range it's more like five trips, max...
If I'm shooting just a revolver (and my girlfriend probably hers) that's an easy day. Guns, holsters, speedloaders go in a range bag along with ziplock bags for empties, ammo goes in an ammo can (legal thing, must transport ammunition separate from the firearm), grab a few targets from the storage room and go. I keep a plastic tub in the truck, that has most of the universal range stuff like eyes, ears, pasters, stapler, a small cleaning and tool kit, etc. The situation with target stands at the range is highly variable, but if it's a quick outing and I just need to post one or two targets I can generally trust that I'll be able to do that with what's at the range.
(When it gets fun is when we have a training day with our small group of shooters... My kit, her kit, my pistol, her pistol, my rifle, her rifle, the loaner pistol, the loaner rifle, magazines for all, ammo for all, targets, target stands and other props... No real way to avoid many trips to the truck at home when loading and unloading all that stuff. On those days a packing list written days in advance is my best friend.)