WATCH: Navy SEAL, Marine Raider Vets Complete 5-Mile Rock Run on Ocean Floor

August 3, 2021Hannah Ray Lambert
ocean rock run

Navy SEAL veteran Kaj Larsen carries a 45-pound rock on the ocean floor. Screenshot via YouTube/Ten Thousand.

Two special operations veterans accomplished the audacious aquatic feat of carrying a 45-pound rock across the ocean floor for 5 miles. Navy SEAL veteran Kaj Larsen and Marine Raider veteran Don Tran are not the first to run with a rock underwater. Surfers popularized rock running during the 1990s as a way to improve endurance and train for the stress of being held underwater in a wipeout. However, Larsen and Tran may be the first to run a rock such a great distance.

“The water is the most fundamental element in my life,” Larsen says in the video chronicling their adventure, which was sponsored by training gear company Ten Thousand. “I was thinking about a way to really push myself and a way to really test the limits of what can be done underwater.”

Larsen and Tran dedicated their rock run to Force Blue, a nonprofit that helps combat veterans returning to civilian life and works toward preserving the ocean.

The video shows how the pair designed their own training regimen and got in the right mental state for the rock run before heading into Oahu’s Waimea Bay and braving the many challenges presented by the ocean environment. 

Check out the full video below, but do not attempt this at home.

Read Next: ‘Man Down’: Teammate Recalls Losing Marc Lee, the 1st SEAL Killed in Iraq

Hannah Ray Lambert
Hannah Ray Lambert

Hannah Ray Lambert is a former staff writer for Coffee or Die who previously covered everything from murder trials to high school trap shooting teams. She spent several months getting tear gassed during the 2020-2021 civil unrest in Portland, Oregon. When she’s not working, Hannah enjoys hiking, reading, and talking about authors and books on her podcast Between Lewis and Lovecraft.

More from Coffee or Die Magazine
Medal of Honor is held up.
Biden Will Award Medal of Honor to Army Helicopter Pilot Who Rescued Soldiers in Vietnam Firefight

Biden will award the Medal of Honor to a Vietnam War Army helicopter pilot who risked his life to save a reconnaissance team from almost certain death.

dear jack mandaville
Dear Jack: Which Historic Battle Would You Want To Witness?

Ever wonder how much Jack Mandaville would f*ck sh*t up if he went back in time? The American Revolution didn't even see him coming.

west point time capsule
West Point Time Capsule Yields Centuries-Old Coins

A nearly 200-year-old West Point time capsule that at first appeared to yield little more than dust contains hidden treasure, the US Military Academy said.

Ouija Board aircraft carrier
Low-Tech ‘Ouija Boards’ Have Helped Aircraft Carriers Operate for Decades

Since the 1920s, a low-tech tabletop replica of an aircraft carrier’s flight deck has been an essential tool in coordinating air operations.

Army vs. Navy mascot
The Navy Goat vs. the Army Mule: Mascot Origin Stories

For nearly as long as the Army-Navy football rivalry, the academies’ hoofed mascots have stared each other down from the sidelines. Here are their stories.

ukraine long-range weapon
Zelenskyy Says Ukraine Has Developed a Long-Range Weapon, a Day After Strike Deep Inside Russia

Zelenskyy said on his Telegram channel the weapon was produced by Ukraine’s Ministry of Strategic Industries but gave no other details.

7 of the Best Movie Ambush Scenes of All Time

Ambushes make for great action scenes. Here are seven of the best to ever grace the big screen.

  • About Us
  • Privacy Policy
  • Careers
Contact Us
Contact Us
© 2023 Coffee or Die Magazine. All Rights Reserved