Boston Police Commissioner William Gross said he got "no sleep" before his first Boston Marathon as the leader of the city's police department.

"I got no sleep last night," he told Boston Public Radio Monday, discussing how his department prepared for the marathon over the last year. "I was reading the op plans and couldn't go to sleep, I'm up, I'm talking to commanders, we're texting each other."

Gross joined hosts Jim Braude and Margery Eagan live from the WGBH Studio at the Boston Public Library, which is just yards away from the Marathon's finish line. Gross succeeded former Commissioner William Evans last summer.

Read more: Former Commissioner William Evans On His 21st Boston Marathon

Gross cited the memory of the 2013 Marathon bombing and its victims as motivation.

"It just motivates all of us to make sure we let everyone know, especially the victims and their families ... that their lives were not taken for granted," he said. "Their spirit lives on through us, and we're going to make this the best race and the best event possible."