distant, far
遠 centers on physical or metaphorical distance: something far away or distant.
遠 combines the movement radical 辶 with 袁, which likely contributes the sound. The idea is of moving away to a distant place.
The movement radical 辶 suggests traveling, and the inner part 袁 looks like a long robe trailing behind. Picture someone in a long robe walking far into the distance.
For エン, imagine a distant land that ends at the edge of the world: end -> エン, and the journey takes you far away.
far; distant; far away; a long way off; in the distance
eternity; perpetuity; permanence; immortality
reserve; constraint; restraint; modesty; diffidence; hesitation; holding back; discretion; tact; thoughtfulness
(military) expedition; campaign
distant; remote; isolated
long distance; tele-
without reservation; freely; frankly
pretending to respect (someone) while in fact staying distant; keeping at arm's length; giving a wide berth
longed-for; anxiously awaited
telescope
distant place; faraway location; far away
to go away; to become more distant; to fade away; to die away
trip; excursion; outing
school trip; field trip; excursion; outing
far away; far off
to keep away; to keep at a distance
detour; roundabout way
estrangement; alienation; neglecting to stay in contact
distance; perspective; far and near; here and there
to move off (into the distance); to become distant; to recede; to fade away; to die away