Parked at the Osceola Trail Head on Tripoli Road, ran down the road 1.25mi to the Tecumseh Trail Head also on Tripoli Road. ~4mi up to the summit of Mt Tecumseh and down to the Waterville Valley Ski Area parking lot, then the XC ski trail to Tripoli Road to the Livermore Parking Area. Livermore Road (closed) to the Greeley Ponds Trail past Upper & Lower Greeley Ponds, then up the Mount Osceola Trail to the 4156' summit of East Osceola and onward through the col and up the "Chimney" to the summit of Mount Osceola at 4320'.  16 miles.

Sines - Troia: The longest beach in Europe
Located at the East Coast of Portugal, the beach between the cities of Sines and Troia, is the longest in Europe, and the 7th longest in the world. It´s 65 km (40 miles) of uninterrupted sand, 90% of it very soft, which elevates the difficulty of the route.

Photos of the beginning & end from Google Street View.