Many athletes are seeking new and novel ways of pushing their limits, and the challenge of running back-to-back races is certainly one way to test the boundaries.

- Dean Karnazes

Unlike the traditional athlete, I've got to do more than just engage in my sport to put food on the table. When I'm done running, it's straight to the office.

- Dean Karnazes

I love to run and I have some tips to keep it fresh and novel. I rarely use the same route twice. That keeps things new.

- Dean Karnazes

Yes, my dad's a marathoner. He used to do sprint distances and then started marathoning. My mom is an endurance animal. She does three-day events like the Susan G. Komen three-day walk.

- Dean Karnazes

I don't know about you, but all this modern technology that's supposed to save us time and effort has actually ended up making things more complicated in my life, eating up extra time.

- Dean Karnazes

Unlike running on a road or concrete, natural surfaces are more forgiving and offer a more varied terrain, ultimately resulting in less repetitive micro-trauma to bones and joints than running on hard pavement does.

- Dean Karnazes

I have an ElliptiGO. It's a standup bicycle. You don't pedal; you stride on it. It allows me to have the same striding motion as running without the impact.

- Dean Karnazes

When I was running across the country, I was doing 40 or 50 miles a day in sleeting snow with zero visibility for five or six days in a row. Ten to 12 hours of running in that is monotony beyond belief.

- Dean Karnazes

Beyond racing, I just love the art form of running, of conceiving new ideas like the 50 Marathons in 50 States in 50 Days. It's the ultimate expression of what I love to do, which is run, and travel, and see this great country.

- Dean Karnazes

The first thing I do when I walk into a hotel is find the gym, and if they don't have a gym, I start looking for a handhold where I can do my pull-ups. Sometimes if a shower curtain rod is sturdy enough, I'll do them there.

- Dean Karnazes