trip report

EVOLUTION TRAVERSE by Miya Tsudome

“To climb for miles and never leave the skyline…” - Peter Croft

The Evolution Traverse has been on my bucket list as long as I can remember. For so long, it was a far-off fantasy – too big and serious to comprehend until I was “ready.” Fast forward years of climbing and scrambling all across the High Sierra, and I suddenly found myself in that position of mentally ready and technically capable, but the worry of being physically ready still lingered in the back of my mind. Climbing not measured in vertical feet but in miles; two days of having to be mentally sharp for soloing, and just the willpower to dive headfirst into a mission that is sure to be somewhat of a sufferfest.

I’ve been thinking about risk assessment more recently - my relationship to it, but also other people’s relationship to it, and how to talk about things like soloing in the mountains with the deference it deserves. Not to post about things like this as casual no matter how casual it may feel, for fear of how it might influence others. It’s hard to put these things into perspective when some of the most competent climbers you know have died soloing, and others do things like the Evo in a day and treat it as a casual backyard mission. And you’re left thinking, where do I fit in on that scale? Food for fucking thought.

And if contemplating one’s mortality soloing in the mountains isn’t enough, a month ago I was diagnosed with a rare form of cancer. Something I thought was a benign cyst on my arm turned out to be a malignant tumor. I’d by lying to you if I said I knew how I felt about the whole thing. I’ve learned from experience, that after the initial shock wears off you kind of just get numb. 

Ironically, I physically felt fine. And so as someone who knows how to use physical movement as a way to avoid feeling feelings, I just forged on, working, climbing, making plans, while I waited for someone to tell me what was next. 

The Evolution Traverse was something Gena and I had been trying to do for the past two years, but kept being thwarted by High Sierra monsoon season. I’d spent the spring and early summer this year hiking and jugging for work so knew I was more aerobically fit than usual and the time was now. 

My surgery was planned, and Gena was able to get a few days off right before it so we’d go for it then. In the end, while cruising along at an altitude of 13,000 ft, with plenty of time to think, I realized how apt this experience was for what I was dealing with. “One mountain at a time,” “it’s best not to look too far ahead on the ridge,” “stay positive.” The comments from Mountain Project rang in my ears.

evolution traverse mt darwin

Gena points out Mt. Darwin (13,837) - the high point on the traverse

We pretty much followed Steph Abegg’s itinerary to a T, with our plan looking like this:

Day 1: Hike to Darwin Bench

Day 2: Climb the traverse to Peak 13,332 (halfway) - bivy

Day 3: Finish the traverse, hike back to camp

Day 4: Hike out

A brief hail storm passed through our camp in the late afternoon

Gena eats some dinner while the hail pitter-patters on our tent

Stella helping me pack

My Gear List:

  • 36L pack (Patagonia Terravia)

  • Sleeping pad and 20-degree bag (lows were in the 30’s or else I would have taken a 40 degree)

  • TX4 approach shoes

  • Nylon double-length webbing for harness

  • ATC

  • Chalkbag

  • Extra tat and lightweight quicklinks in case any rap stations needed attention

  • Food for 4 days

  • Titanium 900mL pot, lightweight stove, small fuel canister for melting snow

  • Sun hoody, lightweight alpine pants, R1, beanie, Capilene air leggings, and medium-weight puffy jacket

  • 1.5 liters of water for on the ridge

  • My ultimate luxury item… Sony A7 IV with my 14mm 1.8 lens

We also had a 40-meter, 5mm rap line which ended up being the perfect length for all the rappels we did. I felt very comfortable soloing the whole thing in approach shoes (we did all the raps off Darwin, skipping any 5.9 downclimbing sections) and Gena put on her climbing shoes for the last peak, Huxley which had the most sustained 5th class of all of the peaks if you don’t downclimb off of Darwin.

The first day on the ridge, I was buzzing with energy and psych and Gena and I were flowing. Making great time on the often discouraging first few summits, nailing our route-finding, and moving well. From Darwin to Peak 13,332 where we would bivy ended up taking us 5 whole hours. They aren’t kidding about those gendarmes. Weaving up and down and around over a seemingly short distance, it was baffling how long it took. But we summited before sunset, found a nice bivy next to a big snowpatch, and settled in for the night.

evolution traverse golden triangle

Gena on Croft’s Golden Triangle

Our bivy just after Peak 13,332

Having finished the more “difficult” and more technical half of the ridge, we took our time waking up and getting started on day two, a day which we definitely underestimated. I would describe the first half of the Evo as being technical, and the second half as being physical. The distance is way longer, the elevation gain and loss is much steeper, and in general is just more of a leg day with a lot of sun exposure.

On the ridge towards Mt. Haeckel

Twice we thought we had summited Fiske only to look over in dismay at where Fiske actually was. The fatigue and dehydration started to kick in, and you look down at Warlowe, this huge, intimidating monster of a peak, and start to dig into the grit reserves you knew you’d have to access at some point.

By Huxley, the light was slanting and turning golden. We took a breath, and started up the last peak, savoring the movement which happened to also be the best on the whole ridge. Solid rock and fun cracks up to 5.7 leads you to a summit ridge full of large, jagged boulders, all contoured by the intense evening light.

We topped out as the fiery red sun set in the West, and hiked the 5+ miles back to our camp at the Darwin Bench through the night, at which point I was deep in the pain cave. But with nothing to do but hike out the next day, I crashed into a dreamless slumber, happy to be safely on solid ground.

In the end, the Evo traverse was a culmination of all of my alpine experience, and I felt more than equipped to do it. I’m left thinking, but what if, in a day? Only to be wary of the thought of pushing out into even more dangerous territory. Is it a game of odds? Or am I as capable as anyone else who has accomplished the same thing. The feeling is too good, unfortunately, of moving confidently and well across so much terrain, that it only makes you want to do it more. But is it worth it. It’s a question I’m not sure I know the answer to. And will be chewing on for a while, I’m sure.

A day later, I had the surgery, and prognosis is good. Still have to figure out a few things but I think it’s going to be alright. 


“It is not the strongest of the species that survives, nor the most intelligent that survives. It is the one that is the most adaptable to change”~ Charles Darwin