Inca Trail Marathon is a runner's high in Peru

— There's really no better way to see a place than by foot.

Even if the path is 26.2 miles and goes over a 13,800-foot mountain pass.

And it's a race.

Running a marathon in June along the Inca Trail, high in the Peruvian Andes, seemed like a good idea when I signed up for this trip nine months earlier.

Although this marathon left me gasping — because of the scenery, I'm sure — it was worth it once I reached the Sun Gate and viewed the finish line — the spectacular ruins of Machu Picchu — a short distance below.

Arriving on foot, just as the Incas did, made this journey profound. And running it felt like an even greater accomplishment.

This race may have ended at Machu Picchu, but it began when one of our tour guides took his foot and drew a straight line in the dirt trail — our starting point. There we were, shivering in the dark and adjusting our headlamps, just minutes from the 4 a.m. start.

During this grueling course, we would battle rain pelting us in the face, cows and llamas blocking trails (not to mention hikers heading to Machu Picchu) and thousands of stone steps rising and descending more than 10,000 feet.

A low point for many runners was the seemingly never-ending haul up Dead Woman's Pass, which was covered with a fresh dusting of snow.

I now see why organizers have dubbed the race "the most difficult marathon in the world."

A growing number of thrill seekers look to get their kicks by pushing their minds and bodies to the limit with adventure marathons. Trips are offered all over the world, from glaciers in frigid Antarctica to the scorching Sahara Desert in Africa.

Many have as their goal to run a marathon on each of the seven continents. So far, I, at age 31, have run three: North America (San Diego, Los Angeles and San Francisco marathons), Asia (Great Wall Marathon in China) and now South America.

Tim Manning, a 54-year-old runner from Auckland, New Zealand, completed his seven-continent quest with the Inca Trail Marathon. He described the run as the most difficult and said at the finish line that he was "completely shattered and elated at the same time."

Although most wouldn't want to describe their vacation with such extremes, running an adventure marathon is kind of a metaphor for life: There are highs and lows, but how you cope comes from within.

Not that I have anything against lounging on a beach, but I find it more satisfying to roll up my sleeves, dig in and accomplish a goal I spent months training for.

Plus, when you're exercising on vacation, there's no need to worry about eating too much at the buffet. I didn't think twice about having dessert after both lunch and dinner.

And by running, you can cover more ground during your vacation.

Our group had two practice runs: one running downhill into Cuzco (ending at one of those buffets) and the other down a scenic trail leading to the Urubamba River. These runs were essential to familiarize us with running at a higher elevation.

The day before the marathon, our group explored the Inca ruins at Ollantaytambo. We later walked a couple of hours to our campsite, sandwiched between a river and a potato field, near the Inca Trail.

I had never camped like this: Tents were already pitched, we each had a bowl of warm water we could use to wash up with, and red wine was served with dinner. I felt a little too pampered.