Journy schedule

For Rock the Park's 100th episode, Jack and Colton hike the Grand Canyon rim-to-rim, as few ever do.

Sophia Bush joins Jack and Colton back at Denali National Park, Alaska, for all things dog mushing.

Jack and Colton travel 'The Loneliest Road in America,' discovering the natural history of Nevada.

Colton and Jack explore a California island by bike, seeking bison and trying their first solo shore dive.

On a journey back to his rugged roots of the Scottish Highlands, Alan experiences an extraordinary hidden getaway living in harmony with ancient land, complete with 360 views and golden eagles circling the property. In Sicily, Alan tours an eccentric family home built above a cave, filled with innov

Jack and Colton hit the water in Alaska's Chugach National Forest to surf a famous hours-long wave.

Colton and Jack spot iconic wildlife in Kenai Fjords en route to America's largest ice field.

Jack and Colton hike the Iditarod Trail in Alaska's Chugach State Park, facing dense fog and glacier waters.

Colton and Jack explore San Juan Island, Washington, and the fragile ecology of the Salish Sea.

Jack and Colton are in Washington’s Olympic National Park to hike the pristine pacific coastline.

Colton and Jack dive into South Dakota, stopping at Minuteman Missile site and Custer State Park.

Jack and Colton hike rescue dogs and mountain bike in Montana's Gallatin National Forest.

Colton and Jack horse-pack Montana's Beaverhead-Deerlodge forest to find the source of the Missouri River.

Jack and Colton are back in Glacier to hike the High Line Trail, with bears, big horns and goats.

Jack and Colton tackle two 14,000-foot peaks in Colorado's Arapaho National Forest as conditions turn.

Colton and Jack kayak the dark waters of the Black Canyon in Colorado's Curecanti recreation area.

Colton and Jack visit Colorado National Monument, then take a 2-day raft and camp trip on the Colorado River.

Colton and Jack return to Great Basin for a mountain rematch and to see what ecologists found in a cave.

Jack and Colton canoe the Mississippi in Minnesota's Twin Cities, past a lock, dam and barge corridor.

Colton and Jack join buddy Joe Stone in Moab, proving limitation needn't end the quest for desert adventure.

Colton and Jack tour Hoover Dam at Lake Mead and join wounded veterans on a therapeutic scuba dive.

Colton and Jack overland Nevada's Gold Butte, finding petroglyphs, a sinkhole and a gold-mining ghost town.

Colton and Jack visit the Florida Keys sanctuary to see how divers defend and replant declining coral reefs.

Colton and Jack ride a swamp buggy through Florida's Big Cypress to seek invasive pythons with a park ranger.

Jack and Colton snorkel with manatees, then dive their deepest yet inside an underwater cavern.

Jack and Colton visit Arizona's Petrified Forest, one of the world's densest areas of petrified wood.

Colton and Jack take the L.A. challenge of surfing and skiing in one day, plus surfing with Girl Powerful.

Jack and Colton relive K9 adventures: scouting wolves in Yellowstone and dog-sledding in Denali.

Jack and Colton explore America's National Forests: surfing in Alaska, a Montana bear, a Colorado waterfall.

Jack and Colton share Florida's national park adventures, hunting pythons and snorkeling with manatees.

Colton and Jack revisit great shared adventures, including hiking with Jack Hanna in Glacier National Park.

Scott Wilson and Andre Dupuis travel to New Zealand to recruit Ellis Emmett for underwater adventures.

Scott and Ellis cross New Zealand's North Island for a sunken ship, cave dive and Poor Knights reserve.

The team swims with whale sharks in Djibouti, then dives Cousteau's Conshelf II and a WWII wreck in Sudan.

Scott brings Ellis and the Descending team to Canada for cold-water diving off Vancouver Island.

Island-hopping the Caribbean, Scott and Ellis meet the 'Dive God' as an invasive species threatens the seas.

The Descending team island-hops the Caribbean: Grenada art, Dominica sharks and their deepest dive yet.

Scott and Ellis visit South Africa's notorious shark waters, where an easy shipwreck dive turns to disaster.

Scott and Ellis explore marine life off Southern California, scouring the Sea of Cortez for "diablos rojos".

The Descending team braves Iceland's frigid waters, diving between two continents in pristine clarity.

History fanatic Scott talks Ellis into diving the shark-infested, WWII-scarred waters of the Solomon Islands.

The team explores the St. Lawrence Seaway and Great Lakes and their freshwater shipwrecks in Canada.

In Indonesia's Raja Ampat, Scott and Ellis fish like locals, meet giant manta rays, and face an accident.

After his accident, Scott dives again in Indonesia's Lembeh Strait, ending the journey in Vanuatu.