Mountain Bike Turkey
Two-wheel your way through ancient villages in the Bey Daglari mountains and down rocky paths that lead to stunning Aegean beaches on this challenging, 15-day fat-tire tour. Be prepared to pedal three to four hours a day on steep mountain singletrack, forest trails, and paved roads. Marmara Mountain Bike Adventures, $1,675; 011-90-242-511-47-84; www.marmara bikes.com; May-September.
Turkey Multisport
This 16-day excursion takes you to western Turkey's Byzantine churches and the Cappadocia region before leading you off the tourist track with a whitewater canoe trip on the Class IIIII Irmagi River and a four-day trek in the mountains of Lycia. Himalayan Travel, $840; 800-225-2380; April-September.
Rambling in Central Greece
You'll hike along pine-forested paths on 8,316-foot Mount Pindos and through the 3,000-foot-deep Vikos Gorge (the country's Grand Canyon) on this 11-day tour of north-central Greece. Hellenic Adventures Inc., $2,761; 800-851-6349; www.hellenic adventures.com; May, June, September.
Cruise Turkey's Turquoise Coast
Spend four days exploring Istanbul and ruins in Ephesus then board a 75-foot traditional Turkish guleta 12-person, double-masted wooden yachtfor a ten-day cruise along Turkey's Turquoise Coast, between Marmaris and Antalya. Wilderness Travel, $2,995-$3,195; 800-368-2794; MayOctober.
Sail Greece's Dodecanese Isles
It's the classic Aegean adventure: a week or two of island-hopping aboard a 50-foot, eight-person sailboat. Help sailor sit back and be a worthless deck lizardas you ride the winds to Leros, Samos, and other islands in the Dodecanese chain. Avenir Travel, $895-$1,750; 800-367-3230; www.avenirtravel.com; April-September.
Scuba Dive the Cyclades, Greece
Explore undersea ruins off the coasts of M'ykonos, Prasonísi, and Santoríni with a government-certified guide (in Greece, submerged antiquities are off-limits to independent divers). You'll spend seven days diving and six nights relaxing in small beachfront hotels. Trekking Hellas, $1,170; 011-30-1-331-0323; www.trekking.gr; June-August. Dianna Delling