Anytime your race plan involves running on the white line of the highway to keep the soles of your shoes from melting, you know you're in for a suffer-fest. Here, based on my personal suffering and the suffering of others, is my top 10 list of the world's toughest endurance races.
Phoenix is a city encompassing 27 communities and 4 million residents that has been occupied for the last two millennia, and upon its founding was named Pumpkinville for the pumpkins that were grown along irrigation canals. In the last decade or so, downtown Phoenix has experienced a resurgence.
Stand up paddle boarding is in my top three of favorite outdoor workouts. It's such a versatile and functional tool for fat burning and body sculpting, depending on the type of workout you're looking for; you can manipulate your time on the board to focus on core work, strength, or even endurance.