climb the highest peak on all five continents.
run a marathon (or a sub-4 mile) in every country.
climb El Capitan solo.
walk to the north or south pole, or both, unaided.
run across mainland Europe - Westernmost point. Cabo da Roca (9° 29' W), Colares, Portugal; Easternmost point. (debatable, but a common option is): an unnamed 545 metre peak at 68°18′N 66°37′E, the Eastern most point of the Ural Mountains watershed. the distance is approximately 3,400 miles or 5,500 km.
walk the Appalachian Trail, and the Continental Divide Trail in the same calendar year.
row across the Pacific Ocean.
bicycle the entire length of the Americas - Northernmost point. Murchison Promontory (Zenith Point), Canada 72° 0′ N 94°38′ W. Southernmost point. Ushuaia, Tierra del Fuego, Argentina (-55° 04′ S -66° 44′ W). for a slightly easier option that misses out the Darien Gap, you can just do North America and finish at Punta Mariato, Panama 7°12′ N 80°53′ W.