where to train for 80 strength

Well if you just looking to power train there's actually a system. Find the average damage you can do with your armor/weapon combo. Find a group of creatures ( so there's several to smack around while the first one you killed respawns ) with that many hp. Go there with little to no food & commit genocide. Using that method you should be able to pretty much one hit each creature. They never get the chance to strike back so food isn't required. The xp you get is always equal to 4 times the damage you do & your pretty much getting the fastest damage possible. You don't have to worry about banking for food so it's just straight up xp. Hope that helps.

Well, I do not have 80 str, but I have 77. Feel free to add me: Phantom3525. The best place to train in F2P is at Greater demons in the old bounty hunter place. Hardly any one is ever there, and it is also a good place to train range (lots of rocks). There are also hellhounds, but those are not worth it. The greaters also drop rune full helms. In my opinion, this is the best place to train.