
This story first appeared in The Outsider, the premium outdoor newsletter by Jason Blevins.
In it, he covers the industry from the inside out, plus the fun side of being outdoors in our beautiful state.
MOUNT CRESTED BUTTE โ โI used to think that North Pole expeditions were the hardest thing I’ve ever done, but …โ
Whatever Eric Larsen says next is going to be the worldโs most heinous sufferfest. This is the explorer who crawled and swam 53 days through the melting Arctic Ocean to reach the North Pole in 2014, likely the last human-powered trek ever to the globeโs northernmost point.
Heโs (almost) pedaled to the South Pole. He climbed Mount Everest and reached both the North and South poles in a 365-day period in 2009 and 2010. Heโs hiked, pedaled and paddled across Colorado, Wisconsin and Kansas.
The renowned polar explorer has put one foot in front of the other in 40-below-zero blizzards, sleeplessly staggering with minimal rations to find the exact point where his compass spins. He knows how to persevere through hardship in the worldโs loneliest, frozen, lunar landscapes. What possibly could be harder?
A stage 4 colon cancer diagnosis early last year.
โWhat followed was โฆ the most difficult thing that Iโve endured, that made our polar expeditions look like a cakewalk,โ Larsen said toward the end of a funny, motivating slideshow presentation of his polar adventures that, as of recently, has taken on a new level of inspiration.
Larsen, a father of two, has always gleaned lessons for the world from his polar jaunts. He returned from the North Pole in 2014 with a firsthand account of a rapidly melting ice cap. His push for a speed record to the South Pole in 2018 revealed how melting polar ice caps are threatening everyone. He championed the notion that adventure is everywhere by biking, hiking and pack rafting from eastern to western Colorado in 2017, then doing the same self-made triathlon in his home state of Wisconsin and then again in Kansas.
Now back home in Crested Butte, doctors tell him they canโt find any cancer but there are more scans coming. Heโs got a new lesson to teach and it didnโt come as easily as crawling and swimming to the North Pole in 53 days.
โMy role in adventure, I feel like, is shifting,โ he said.

Larsen didnโt want to talk about his cancer. He wrote a few updates on his Caring Bridge webpage, but mostly, he kept it to himself. Doctors in January 2021 told him he had maybe three years to live and they wouldnโt be good years. He relied on that grit that kept him leaning into frozen whiteouts, putting one foot in front of the other, to fight.
โI was trying to white knuckle it,โ he said.
After chemotherapy, radiation, a particularly gnarly surgery and an infection that kept him bedridden for three months, Larsen was at the Gunnison pool, wading through the water when a guy came up and asked if he was Eric. He was a bit further along in his battle with colorectal cancer. He thanked Larsen for the inspiration to keep fighting.
โAnd, bam. I felt so much better. I was just in so much pain and not talking to anyone. I saw that the way I was trying to get through this was not working at all,โ he said. โYouโd think that Iโm 50 and I would have learned a few things over the years. So, yeah, big surprise to no one but me, but it took that intense moment with a stranger to really change my perspective. Maybe I need to talk about this stuff. Maybe I need to share this defining thing in my life. There was a time when I didnโt think I was ever going to see my kids ever again. Now, itโs time to talk.โ

Larsen has been a public speaker for as long as heโs been trekking across polar caps. Heโs got that down. Earlier this month at the Colorado Outdoor Industry Leadership Summit in Mount Crested Butte hosted by the stateโs outdoor recreation office, he captured a crowded ballroom with hilarious retellings of his adventures. (Clicking through a dozen slides showing viewers Antarctica, the Arctic Circle, Greenland, Manitoba and more, all looking like the inside of a ping pong ball.)
โItโs hard to make polar travel really interesting,โ he said. โItโs one of the most boring sports in history.โ
But Larsen makes it fascinating. Heโs the last of a breed of polar explorers who traversed frozen landscapes that wonโt be icy much longer. His firsthand accounts of rapidly melting polar caps โ and harrowing photos and stories of swimming gear across open expanses of sea โ punctuated with dire warnings of a warming climate.
And Larsen pushed everyone he met to find their own thrills in the outdoors.
โAdventure can happen on any scale, in any place,โ he said.
Larsenโs โAdventure is Everywhereโ message resonated with Ryan OโDonoghue, the executive director of First Descents, which shepherds young adults with life-threatening illnesses into the outdoors for therapeutic experiences on rivers, mountains and beaches.
โThat really hit home,โ OโDonoghue told Larsen after the explorerโs talk in Mount Crested Butte. โThe idea that adventure is everywhere, thatโs a belief we hold true at First Descents. We witness it every day through our community of young adults impacted by cancer who embrace adventure to support their ongoing healing journey.โ
OโDonoghue hopes to enlist Larsen in his mission, getting the polar explorer to work with his global program of young cancer warriors.
โYouโd be amazing,โ he said.

Larsen has only begun to open up about his journey. Heโs still in it. While preliminary scans do not show any cancer, his journey doesnโt have an end date. Yet. Heโs recovering from an ileostomy reversal and mentally preparing for more scans in September. Heโs adjusting to his new digestive system โ minus a foot of colon. And heโs still assessing how his new โcomfortable relationship with deathโ might be tapped to help others.
Larsenโs wife, Maria Hennessey, has friends who are fighting cancer and never talk about it. As Larsen shares more details about his journey, they are finding ways they can show up for people who are quietly enduring illnesses. The cancer community shares a dark bond, with veterans of the invaderโs shadows able to guide the newcomers.
โItโs still so fresh for Eric, but it would be a missed opportunity for him to not do this,โ Hennessey said.

And Larsen rarely misses opportunities. His experiences in the coldest places on Earth give him the physical and mental fortitude to keep going through the blizzard. His cancer is giving him a new type of strength, one heโs still studying but he knows will be just as useful as those lessons learned in the whiteouts.
โI mean, I donโt want to have cancer, but the perspective Iโve gained is incredible,โ he says. โItโs hard because Iโm still in it, so everything is evolving, but, really, this is a gift. It sounds so weird to say, but I feel totally different than I used to. I feel like I need to pay this forward, you know?โ
