He is widely remembered for his 1974 composition "Please Come to Boston", which was a number 5 pop hit (number 1 Easy Listening) in the U.S. He was inducted into the Nashville Songwriters Hall of Fame in 1995. He is claimed by singer/songwriter Kenny Loggins as his second cousin.
Loggins also wrote "Pieces of April" for Three Dog Night, which was a top-20 hit in 1973. He has written material for Restless Heart, Wynonna Judd, Reba McEntire, Gary Morris, Alabama, Toby Keith, Don Williams, and the number 1 hit "Morning Desire" by Kenny Rogers. In 1984, he recorded "Nobody Loves Me Like You Do," a duet with Anne Murray, which reached number one on the Billboard Hot Country Singles chart. Loggins and Murray were named Vocal Duo of the Year at the CMA Awards in 1985.