Kevin Hart1 of 30
Anyone who has used the Nike+ Run Club app has become accustomed to hearing Kevin Hart's voice at the end of a run. The actor and comedian is best known for his impromptu 5K races and has become the face of Nike's everyman runner movement.
Will Ferrell2 of 30
Will Ferrell is a man of many talents--namely his ability to consistently ping our funny bones. Complimentary to his comedic exploits, Ferrell is an accomplished runner who once ran the Boston Marathon in 3:56.
Alicia Keys3 of 30
Before 15-time Grammy winner Alicia Keys was starring on NBC's hit show, "The Voice," she ran 26.2 in her home city, completing the 2015 New York City Marathon in 5:50:52. Keys ran the marathon in honor of her charity, Keep a Child Alive.
Ellie Goulding4 of 30
Ellie Goulding has been very open about her love for running, telling The Huffington Post, "Running is the basis of all the training that I do... It's like an escape." The Grammy-nominated singer regularly enjoys five-plus mile runs--and occasionally invites her fans to join her.
Mark Zuckerberg5 of 30
At the beginning of 2016, the Facebook founder and CEO kicked off "A Year of Running"--a challenge he hoped would encourage others to join him as he ran 365 miles during the calendar year. The group now has over 130,000 members and remains an active community full of inspiration.
Sean Combs6 of 30
Better known as "P. Diddy," superstar rapper Sean Combs once prepped for the New York City marathon in just six weeks by cutting out partying, switching to a high-protein, low-carb diet and tapering after he reached his first 20-mile run. He finished with a time of 4:14:52--and raised $2 million for New York City Public Schools.
Bill Belichick7 of 30
In 2014, five-time Super Bowl champion coach Bill Belichick introduced his now-wife, Linda Holliday, to long distance running at the 2014 Country Music Half Marathon. Two years later, the pair hosted their first 26.2 Marathon Party after the Bill Belichick Foundation secured Boston Marathon bibs for the first time.
Heidi Klum8 of 30
Supermodel, fashion designer and entrepreneur Heidi Klum is an avid runner with a love for being outdoors and living an active lifestyle. Her passions merged in 2014 when Klum designed a workout line for New Balance called HKNB.
Jimmie Johnson9 of 30
Who says NASCAR drivers aren't athletes? Seven-time champion Jimmie Johnson runs a sub-1:30 half marathon and, in May of 2014, he won the 35-39 age group at the Over the Mountain Triathlon in Kings Mountain, N.C.--just a few hours before placing sixth in the NASCAR Sprint All-Star Race in Charlotte.
Sean Astin10 of 30
Best known for playing the title role in "Rudy," and for his work as Frodo Baggins' right-hand man, Sean Astin is not just a multiple marathoner, he's also an IRONMAN World Championship finisher. Most recently, Astin--who owns a personal best marathon time of 4:04--completed the 2016 New York City Marathon in 6:02:33.
Hines Ward11 of 30
Former Pittsburgh Steelers wide receiver Hines Ward isn't just a runner--he mixes in his fair share of swimming and biking, to boot. The two-time Super Bowl champion completed the IRONMAN World Championship in 2013, finishing in 13:08:15.
Chandra Wilson12 of 30
Dr. Miranda Bailey--er, Emmy-nominated actress Chandra Wilson--has participated in multiple half marathons, including a pair of Pasadena Half Marathons, during which time she raised money in honor of her daughter, who suffers from mitochondrial disease.
Nicholas Sparks13 of 30
When Nicholas Sparks isn't working on his next heart-melting novel, he's out logging miles. In fact, the best-selling author of books like "The Notebook" and "Safe Haven" is a former collegiate runner at Notre Dame.
Reese Witherspoon14 of 30
A consistent--if casual--runner, the Academy Award-winning actress is routinely spotted out for a jog off-set and in the streets. In 2010, Witherspoon and her daughter Ava competed in a parent-child triathlon.
Channing Tatum15 of 30
Much to the delight of his fans, Channing Tatum is an avid runner who routinely ventures out onto the city streets to embark upon short-to-moderate distance runs. The high school football star also knows Kung Fu, for whatever it's worth.
Jennie Finch16 of 30
Olympic gold medal-winning softball superstar Jennie Finch is best known for her exploits in the circle, but her athletic accomplishments are far-reaching. Four and a half months after the birth of her second child, Finch notched her first marathon finish in 4:05. Two years later, she completed the Olympic-distance Aquaphor New York City Triathlon in 2:51:15.
Pippa Middleton17 of 30
Though you may simply know her as "Kate's sister," the younger Middleton is an accomplished runner with an enviable track record of competing in bucket list marathons all over the globe. For example, her personal best of 3:56:33 came at the 2015 Safaricom Marathon in Kenya. Last year, she was the 13th female to cross the finish line at the Great Wall Marathon in China.
Drew Carey18 of 30
You may have noticed Drew Carey's continued--and, ultimately, drastic--weight-loss between the end of "The Drew Carey Show" and the beginning of his tenure on "The Price is Right." As it happens, Carey turned to running as the focal point of his weight-loss journey, culminating with a 2011 finish at the Marine Corps Marathon.
Tedy Bruschi19 of 30
The three-time Super Bowl champion and ESPN analyst maintains an active lifestyle post-playing career, consistently combining running and strength training. In 2012, Bruschi--a former New England Patriot--ran the Boston Marathon during a year in which temperatures reached 89 degrees by 12:30 p.m.
Dan Mullen20 of 30
The college head coach responsible for the recruitment and development of quarterbacks like Dak Prescott and Tim Tebow, Dan Mullen became the first Division I college football coach to run the Boston Marathon in 2016, finishing his first 26.2 in 4:28:35. Most days, Mullen can be spotted logging miles on campus at Mississippi State.
Flea21 of 30
The Red Hot Chili Peppers bass guitarist read the book "Born to Run," and the rest is history. In a Runner's World interview, Flea explains that the book "affected me profoundly--the concept of our bodies being used for their real purpose when they're running. I thought... I'm gonna run a marathon and raise money for the Silverlake Conservatory of Music." And so he did.
Caroline Wozniacki22 of 30
The former No. 1 women's tennis player in the world, Caroline Wozniacki is--go figure--an accomplished runner and marathoner, having completed the 2014 New York City Marathon in her first attempt at 26.2.
Tiki Barber23 of 30
The New York Giants' all-time rushing leader bounced back from a less-than-optimal performance at the 2014 New York City Marathon to rush for 46,145 yards in 4:28:26 in 2016--his third consecutive NYC finish.
Mario Lopez24 of 30
The artist formerly known as A.C. Slater on "Saved by the Bell" is an avid runner with multiple marathons under his belt. Lopez says that running provides an escape and some much needed alone time.
Al Gore25 of 30
If we're being honest, the former vice president of the United States may not be running consistently these days, but he once ran the Marine Corps Marathon in under five hours--while in office--on a dare from his daughters.
Shia LaBeouf26 of 30
Lately, Shia's been pretty busy with social activism--and starring as John McEnroe in the upcoming film, "Borg/McEnroe"--but, in 2010, LaBeouf--whose father and grandfather are both U.S. military veterans--ran the Los Angeles Marathon in 4:35:31 in support of U.S. vets.
Ryan Reynolds27 of 30
In a wonderfully written entry on the Huffington Post, Hollywood's leading man announced, "I am not a runner. I am a running joke." That being said, his 3:50:22 time at the 2008 New York City Marathon would seem to suggest otherwise. Reynolds ran the marathon, his first, in honor of his father, who suffered from Parkinson's--raising money and awareness for the disease.
Edward Norton28 of 30
Given the on-screen intensity of most of Edward Norton's characters, it should come as no surprise that the A-list movie star trained for the 2009 New York City Marathon in Kenya, which was pertinent to his cause: raising money for the Maasai Wilderness Conservation Trust.
George W. Bush29 of 30
The 43rd president of the United States is also the only U.S. president to complete a marathon. Bush, then 46, ran a 3:44:52 at the 1993 Houston Marathon. Though his pace, distance and frequency has diminished in the years since, Dubya's one-of-a-kind accomplishment keeps him on the list.