the wailing as far as Eglaim and Beer Elim

"the wailing has gone as far as Egalim and Beer Elim" or "people even as far away as Elaim and Beer Elim wail"

Eglaim ... Beer Elim

These are names of cities and towns. Dimon was the principal city of the country of Moab. Several modern versions have "Dibon" instead of "Dimon."