The follow-up to his breakthrough hit "It's Just a Matter of Time", it reached number 12 on the Billboard Hot 100.
Its B-side, "So Close", also reached the chart, peaking at number 38.
[1] "Endlessly" also was Benton's first chart success in the UK, where it reached #28.
[2] In 1970, country singer Sonny James, who had topped the country charts with a remake of "It's Just a Matter of Time" earlier in the year, released his version of "Endlessly" as a single.
It was James' sixteenth number-one song on the U.S. country singles chart.