(CNN) - Frequent fliers and potential Democratic presidential candidates - Hillary Clinton and Joe Biden have been touting their travel creds lately as 2016 speculation heats up.
Busy at the start of her book tour, Clinton made sure to note in her new memoir the number of miles she logged during her tenure as secretary of state.
"I ended up visiting 112 countries and traveling nearly one million miles," Clinton wrote in the author's note for "Hard Choices," which hit bookshelves on Tuesday.
Coincidence or not - Biden also made sure the distance he's traveled as vice president was acknowledged at an event on Tuesday.
In a speech to a manufacturing summit in the nation's capital, Biden said "I've traveled over 900,000 miles now."
"Every single place I go, every world leader with whom I meet; if it's not the first, it's the second or third issues they raise about America's abundance of energy and the prospect that we will be energy independent," the vice president added.
Clinton is seen as the prohibitive frontrunner for the Democratic nomination in 2016 - should she decide to run. And polls measuring Democratic support for their party's nomination consistently indicate Biden a very distant second to Clinton.
Still, Biden hasn't been shy about possible aspirations for the Oval Office.
"There may be reasons I don't run, but there's no obvious reason for me why I think I should not run," Biden said in an interview earlier this year with CNN, during which he said he'll decide on a presidential bid in mid-2015.
Clinton said in an interview earlier this week that she would announce her decision on whether she'll run for the White House by early next year.
CNN's Dana Davidsen and Steve Brusk contributed to this report.