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The Ugly Truth About Ultra-Runner Feet (And Why You Should Cancel That Pre-Race Pedicure)

April 13, 2026
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The Ugly Truth About Ultra-Runner Feet (And Why You Should Cancel That Pre-Race Pedicure)

Let’s just rip the band-aid off right now. If you run stupidly long distances, your feet are probably objectively terrifying.

We don't talk about it at dinner parties, but we all know the truth hiding inside those Hokas. Dead nails. Calluses that could deflect a bullet. That weird blister on your pinky toe that sort of became a permanent roommate.

This week's Trail Running Women episode finally tackles the subterranean horror show of runner feet. They brought on Jeff Hammond. He’s a podiatrist based in Utah, but more importantly, he’s an ultra-runner currently staring down the barrel of the Cocodona 200. I trust a foot doctor. But I trust a foot doctor who willfully destroys his own feet over 200 miles implicitly.

Here’s what actually matters from their hour-long chat. The signal through the noise.

Stop Painting Your Toenails

Yeah, I said it.

Jeff made a point that actually made me pause my run and rewind. We all love a pre-race pedicure to feel somewhat human before spending 24 hours in the dirt. Don't do it. Or rather, don't do it the week of the race.

If you're going to grind down those calluses, do it a month out. Take them down by maybe 50%. You actually need that armor. If you shave off a callus right before a 50K, you're practically begging for a massive, day-ruining blister to form underneath the raw skin.

And the colored polish? Skip it. Jeff advocates keeping the nail "pure." If you’re 55 miles deep and something hurts, you need to see what’s going on under there. Is it a bruise? Is it bleeding? A layer of neon pink gel makes mid-race triage impossible. (Plus, the host shared a casual horror story about gel nails falling off mid-run that I'll be having nightmares about for the foreseeable future.)

The Kinetic Domino Effect

It turns out that annoying knee pain you can't shake might actually be an ankle problem in a trench coat. Everything is connected.

  • Downhill terror: Terrified of rolling your ankle on steep descents? It's not just in your head; it's anatomical. When your foot points down (plantar flexion), the ankle joint is literally in its least stable position because of how the talus bone is shaped.
  • The Orthotics debate: Ditch the hard plastic. Seriously. Jeff hates rigid orthotics for running. If you need support, look for flexible, sport-specific inserts (like Cetus) that work with your natural biomechanics, not against them.
  • Zero-drop warnings: Achilles tendonitis is surging. Jeff blames our collective obsession with suddenly transitioning to zero-drop or barefoot shoes without letting the Achilles adapt to the stretch. Take it slow, folks.

Give Your Foam a Day Off

This was a fascinating takeaway. You shouldn't just rotate your shoes to look cool on Strava; you need to let the foam recover.

If you crush a long, punishing run on a Saturday, the foam in those shoes is compressed. Exhausted. It needs a day or two to bounce back to its original shape. So keep a rotation. Have your cushy recovery shoes (Jeff runs in Asics Novablast for this), your technical trail beaters, and your speed day shoes.

Golden Nugget "I think one question I always get is like, '89 miles into my race, my feet start hurting.' And I'm kind of like... who cares? Your feet hurt. That just happens. We're putting our feet through a lot... You're going to have pain. It's just taking care of them after." — Jeff Hammond

Honestly? That’s the most refreshing medical advice I’ve heard all year. Stop chasing ghosts at mile 89. Your feet are going to hurt.

Pop the blister if you have hours left to run. Leave it alone if you’re near the finish line. Embrace the gnarly toes.

Go touch some dirt.


Listen to Trail Running Women: https://podranker.com/podcast/trail-running-women

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