Members of the Council of Elrond completed hugely underrated journeys to even get there.
First Boromir, who traveled from Gondor to Rivendell — 400 leagues/1200 miles in 110 days— fearing Gondor could not hold much longer. The opposite journey from Rivendell to Gondor’s borderlands took Frodo and Sam nearly the entire trilogy. Oh and Boromir lost his horse midway through and had to walk.
It’s worth mentioning that Aragorn and Gandalf fairly recently traveled even farther, though over longer periods of time.
Aragorn tracked Gollum through the wilds near Mordor for years before bringing him to Mirkwood and eventually returning to his Ranger duties near Bree.
Gandalf (over 17 years) traveled to Minas Tirith and the Gladden Fields researching Isildur and the records of Gondor. Then helped Aragorn capture Gollum. THEN went to the Shire to start Frodo’s journey.
(Legolas didn’t travel as far but he still came all the way from Mirkwood to report to Elrond that Gollum escaped. Oops. Real awkward that Aragorn and Gandalf happened to be there.)
Glóin and Gimli came from Erebor, essentially retracing the journey of The Hobbit, seeking Elrond’s advice because Mordor is closing in on the Kingdom Under the Mountain. Also to visit Bilbo.
All of them came not knowing there would be a Council of Elrond at all— they were all fast in the middle of their own stories, and came to the Last Homely House having nowhere else to turn.
