Charlie Engle, Ray Zahab, and Kevin Lin know endurance better than most. For 111 days, they ran the equivalent of two marathons a day in order to cross the entire Sahara Desert on foot. They touched the waters at Senegal and then made their way through Mauritania, Mali, Niger, Libya, and Egypt to touch the waters of the Red Sea. Along the way, the trio faced blazing afternoons of over 100 degrees, jarring, freezing nights, sandstorms, tendonitis, violent sickness, and the usual aches, pains, and blisters. But the biggest challenge they faced can be summed up in one word: water. Finding it in its purest, cleanest form gets to be a bit of a chore while in the middle of nowhere!

Crossing the Saharan Desert on foot is an amazing accomplishment. But just as commendable are these marathon finishers:

• Christians who finish their lives still growing, still serving.
• Husbands and wives who stay faithful to each other "until death do us part."
• Young people who preserve their virginity until marriage, in spite of crushing peer pressure.
• Pastors who stay passionate about ministry until their last breath.
• Church members who weather the rougher patches and remain joyful, loving, and faithful.