What is the fastest way through the Zadnor portion of the relic grind?

[Krotoan]

I ground at it for a while tonight. I'm maybe... 1/4th of the way done. It's not in any way enjoyable, but it's not death, either.

On a semi-related topic (without starting a new thread): I have never done any of the Eureka content. If I started, say, tomorrow, how long (hours-ish) would it take me to get a weapon to stage 4?

Depends.. if you can get some Fate grinding parties when you play it goes by pretty quick, probably.. like.. 70-80 hours on the outside? The problem is you have to unlock the new areas, not necessarily the mats. It's constant grinding, but what I'd suggest is at least put in the work for the challenges every week, you should get there by Endwalker I believe, maybe sooner if you can burn some days farming NM's.

Stage 4 being Elemental (pyros level) right? Cause that's what you need to unlock the Elemental armor.