Q:
How Close to Enter a Dungeon?
Depends. In most cases, being in the zone of the dungeon will spawn the popup. If you exit it, or in rare cases, you have to walk up to the entrance.
the furthest I have tested it was CM, where is was in Queensdale at the DR-gate and i got the popup.
Arise, ye farmers of all nations
Arise, opressed of Tyria!
Arise, opressed of Tyria!
Most times it’s simply “in the zone”
This has held true for every dungeon ive done numerous times, EXCEPT Honor of the waves. Which has required each member to be next to the door.
As for longest distance i’ve tested thoroughly: you can enter arah from the first waypoint in cursed shore. Which I only know because it’s the only waypoint not contested from an overflow. Many a time i’ve ported down there to see the popup come onscreen.