 Killyran is bounded on the north by Boley and Gortaclogher townlands, on the west by Glebe and Drumreilly townlands in County Leitrim, on the south by Kilnacreevy townland in County Leitrim and on the east by Ballymagauran and Killywillin townlands.Its chief geographical features are Glebe Lough, Killyran Big Lough, Killyran Little Lough, the River Blackwater, County Cavan, a stream, spring wells and dug wells.Killywillin is traversed by minor roads, rural lanes and the disused Cavan and Leitrim Railway.