As in, the series? Every game; back to back. If so, what's the record and where would it be recorded?

Criteria: capture all the pokemon and defeat the Elite Four in every game.

I suppose playing more than one game at the same time could cut the play time in half.

Wouldn't that take like a week?

[QUOTE]Criteria: capture all the pokemon and defeat the Elite Four in every game.[/QUOTE] If you're completing the pokedex in every game then you're looking at like a month long endeavor. So no, nobody has done that nor will anyone probably do it.

I've looked into just catching all Pokemon available in just the 3DS games before and it took me multiple days to catch all of them in Pokemon X casually. OR/AS is basically just a marathon of legendaries to catch and I'm not sure X/Y + OR/AS + Sun/Moon even gets you all of them. You might even have to play Pokemon Channel just for Jirachi and I'm pretty sure Mew is impossible to get and Celebi might now be available either. Then, unless Sun/Moon have done something about that trend, there are, at least from X/Y, multiple new Event-only Pokemon. Note that any form of special/promotional event is not allowed in a Speedrun.

Now to the topic of actually playing through all games. That requires: A Gamecube + capture device, Nintendo DS + capture card, Nintendo 3DS + capture card and all games. Time wise we are looking at: about 47:25:00 at averaging Top 10 pace for: Red, Yellow, Gold, Crystal, Sapphire, Leaf Green, Emerald, Pearl, Platinum, SoulSilver, Black, White2, X, Alpha Sapphire, Sun. After all that you effectively have about 10 Pokemon, already including Jirachi, which then also requires you to buy Pokemon Bank so you can use the Pokemon Transporter application.

All of the above is for any% glitchless, which is the main category for almost all of the games and assuming the "in every game" only applies to defeating the Elite Four, not catching all Pokemon. Unless you want something like this run about 15 times:

EDIT: This is also only including main series releases as listed here on speedrun.com. If you also want to spin-off games in there, good luck trying to buy Pokemon Conquest. Seriously. I have never seen that game.

Like i could see a generation marathon for just any%. like just do red, blue, and yellow, as gen 1 marathon. That would be a reasonable series run? right?

Requiring Pokedex completion as part of this is ridiculous.

While doing just Red/Blue or Yellow for gen1 does sound reasonable, if we are talking any% (as in with glitches allowed) those two releases are very different from eachother and I think the same goes for Gold/Silver and Crystal. Then there's Black2/White2 and the upcoming Ultra Sun/Ultra Moon. For any% glitchless I do agree tho, while there still are quite a few differences between R/B and Y and G/S and C, in both content and run length, for a marathon it makes sense to pick just one for the first two generations.

I could see a Red/Blue - Yellow - Gold/Silver - Crystal any% glitchless 4-person relay. I don't keep up with the pokemon speedrunning community but I'd watch that.

Jesus, a week was actually a hilarious ¤under¤ estimate? So yeah this is not possible for 1 human being to do unless you leave the timer running while sleeping

that would take forever, but if you, like me, don't sleep, then you can go for it.

ffzthinkwithPortals tbh I'd gladly watch a TAS of that.

Or a patched together clip of collaborated efforts, maybe?