This is the 284th most frequent Icelandic word.
langt
"Langt" means "far" or "long" in English.
Here, 'langt' means far and signifies a long distance to be traveled.
Hann ferðast langt til að heimsækja fjölskyldu sína.
He travels far to visit his family.
In this context, 'langt' refers to a long period of time.
Það er langt síðan við hittumst síðast.
It's been a long time since we last met.
Here, 'langt' questions the distance implying if the destination is far or near.