
At the nightly campfires on Colorado River trips through the Grand Canyon, stories make their way into legends, passed down from veteran boaters or guides, or read from books kept in the “library box” on one boat.
Some of the names in those stories are those of people who died in the canyon, some are the brave folks who first explored it, and one is the river guide who thought he could pilot a wooden boat down the Colorado faster than anyone ever had – and did, in 1983.
Kenton Grua is the star of author Kevin Fedarko’s bestselling book, The Emerald Mile, as the driving force behind the fastest run of the Grand Canyon ever: 277 miles from Lee’s Ferry to the Grand Wash Cliffs in just under 37 hours. Grua teamed up with fellow guides Rudi Petschek and Steve Reynolds to ride a massive 70,000 cfs rush of water through the canyon, switching out rowing shifts every 15 to 20 minutes and continuing on through the darkness to beat the previous record by more than 10 hours.
Grua was born in Salt Lake City and moved to Vernal, Utah, the birthplace of commercial raft guiding in the United States, when he was 12. He took a trip on the Green River for his 12th birthday and was hooked. His father bought him a 10-person raft, and Grua spent his teens exploring his backyard rivers, biding his time until his 18th birthday, when he could approach Ted Hatch about a guiding job with Hatch River Expeditions in Vernal. After his first quarter at the University of Utah, Hatch gave Grua a job patching boats in the warehouse for the winter, and three months later, Grua went on his first training trip through the Grand Canyon, with a group of older guides. He lied about his age, saying he was 22, and told them he’d been working in the Canyon for a couple years-then he almost flipped a boat in Lava Falls.

Grua piloting the dory Grand Canyon through North Canyon rapid. Photo: Northern Arizona University Special Collections
After four years working as a raft guide, Grua found his calling in the canyon: Rowing wooden dory boats for Martin Litton’s Grand Canyon Dories. Safely navigating a wooden boat through the canyon is an art form, which Grua learned, then mastered, earning the nickname “The Factor” because he was so much of an additional factor to consider on a river trip. He acquired one of the wrecked dories, The Emerald Mile, and began to rebuild it on his own time, and eventually recruit Petschek and Reynolds for his speed attempt in the resurrected boat.
As much as Grua’s prowess at the oars made him famous within river circles, his obsession was what truly made him The Factor. Grua read Colin Fletcher’s famous book, “The Man Who Walked Through Time,” in 1969, and was upset that Fletcher more or less claimed to have walked the length of the Grand Canyon, when he’d only done about 100 river miles out of 300-and was also offended that Fletcher had dissed one of his hiking heroes, Dr. Harvey Butchart. So he decided to walk the length of the Grand Canyon properly – by himself. He studied the book, and on river trips, scouted a possible hiking route while looking up at the canyon walls from his boat. On his second attempt, in 1977, he walked the length of the canyon, from Lees Ferry to the Grand Wash Cliffs, in 36 days. He estimated that he walked around 600 miles, because of the circuitous route he had to take. He did nothing to publicize his accomplishment, aside from telling a few river guides.
Grua died in 2002, at age 52, when he suffered a spontaneous aortic dissection while mountain biking on a trail near his home in Flagstaff. He had worked for Grand Canyon Dories for 30 years of his life. In 1990 and 1997, river guide and television producer Lew Steiger conducted a series of interviews with Grua, and in one of the interviews, Steiger asked Grua what he thought happened to the clients he took down the Colorado on river trips.
“You’re just blown away that this river could cut this canyon, that could just go on and on and on,” Grua said. “It seems like as the trip goes on, you get into it a few days and it just goes on and on and the canyon is different every day, different every minute and every second. Huge river and just this unfathomable amount of water is flowing by over these rapids and flats, and the walls just keep getting higher, and it just keeps getting better and better and better and better every day, and it just seems like it’s going to go on forever, and then all of a sudden, boom, it’s over. You just go, ‘Wow!’ My first trip was like that. And I think most people’s first trip, when they come down there, is just like this… It’s kind of like it’s going on forever and it’s like this whole lifetime that goes on and you start out this little baby, and you grow up, but before you know it -and it’s probably just like being alive-it’s all over, and you want to do it again. It’s probably like being alive, really.”
The Emerald Mile is a fascinating book! Much contemporary history about the Glen Canyon Dam and the later environmental fight to save the Grand Canyon from two additional proposed dams. David Brower and Martin Litton were very instrumental in saving The Canyon, and this book gives us an in-depth look into what these two great men were made of!
Then there’s the account of the bandit, flood water speed run in a dory by three, original character river gypsies (led by Grua)–a white knuckle read in itself as they rowed through the river-storm by day and by night … and all the while, upstream, the Glen Canyon Dam itself barely hanging on by hastily constructed plywood panels that gave it a few more feet (inches!) in height as Lake Powell continued to rise from the upstream flood waters.
A brilliant meshing of history, environmentalism, and “life-meter pegging” adventure!
As Factors daughter, Erin Grua. I first want to say I miss my dad more than anything. He was my best friend. Secondly, the emerald mile is not a book that should be held so highly due to the author Kevin. Who not even 24 hours after my dads death came to our home and asked to buy all his stuff. Got extremely rude and then continued to harass my mom about buying all his things. He was completely rude and insensitive and was just looking at my dads death as a bestseller opportunity , not the loss of someones husband, dad, son, brother, and just an overall amazing man. I miss him every day. And still to this day, my mother has not smiled or laughed like she used to. They always tell you the first year of grief is the hardest but what they fail to tell you is that every year after that sucks just as much.
Thanks for these HBA entries, probably my favorite part of AJ
I’ve rafted the Colorado through the Canyon five times but never in a dory. If I could row, I’d be working down there now. Alas, utterly no talent at the oars and no desire to pilot a motor rig. I’d be in the Canyon now on the River had events not intervened. The Emerald Mile put me back on the River early and often as I raced though its pages. It’s a book to read and re-read. I can’t wait to do it again. For anyone who loves the Grand Canyon and the Colorado this is the book for you.
Well, as his daughter I don’t really agree with Kevin(the author) method of trying to buy my dads stuff less than 24 hours after his passing. When we we had just lost our whole world. He was more concerned about himself and his book than about respecting us and letting us mourn
Every time I read about my dad, I miss him more and more. He was my best friend and was taken way too soon. I love hearing stories about him and how goofy of a guy he was. I only knew him for 6 short years. But he was my dad. My best friend, my everything. I would give anything to be able to talk to him again