Most of the filming was conducted in the rugged backcountry of British Columbia, Alaska, the Rocky Mountains, the French Alps, the Himalayas and the Andes, but not at official events or secured sites.

Seasons 1-3 of Ultimate Rush was written and co-executive produced by Pulitzer Prize-nominee and Hollywood screenwriter Stephen Schiff, whose other works include the films Wall Street: Money Never Sleeps, True Crime, The Deep End of the Ocean and Lolita.

The series documented the exploits of several high-profile extreme sports stars including Chris Davenport, Hervé Cerutti, Steve Fisher - and the late, Antoine Montant and Shane McConkey.

With these subsequent seasons, Ultimate Rush went to even greater lengths to show audiences the thrills, dangers and colorful personalities of the extreme sports world.

Skiers scope out steep mountain faces while kayakers see monumental waterfalls, bikers dense forests and base jumpers an abundant stretch of sky.

Episode Cast: Steve Fisher, Ben Brown, Jared Meehan, Sam Drevo, Dale Jardine Three teams of world-class riders demonstrate new extremes of mountain biking.

Episode Cast: Wade Simmons, Robbie Bourdon, Cameron Zink, Dave Watson, Aaron Chase, John Cowan Professional mountain bikers take a road trip through the diverse landscapes of Israel.

Bobby Brown pushes his luck when he travels to the Alps, then Cody Townsend takes advantage of the perfect day in Terrace, British Columbia.

Episode Cast: Bobby Brown, Henrik Winstedt, Cody Townsend, Russ Henshaw, Gus Kenworthy, Kaj Kackrisson In the incredibly exciting world of freestyle skiing, progression raises the bar for this extreme sport.

Episode Cast: Alex Kufman, Bobby Brown, Colby West, Gus Kenworthy, Jon Olsson, Bear Bryand, Mike Rogge, Jay Scambio, Richard Permin Rory Bushfield, James Heim, Eric Hjorleifson, Mark Abma, and Sean Pettit; some of the world's best skiers travel to Bralorne, British Columbia where they find an abundance of lofty peaks full of zones to study and ski.

Episode Cast: Rory Bushfield, James Heim, Eric Hjorleifson, Mark Abma, Sean Pettit Cedric Gracia explodes into the professional world of mountain biking.

Episode Cast: Cedric Gracia, Steve Peat, Dave Watson, Robbie Bourdon, Carlin Dunn, For mountain bikers to reach new levels, knowledge is continually passed along from one great rider to the next.

Legendary rider, John Cowan travels to Ilha Bela, a small island in Brazil, to mentor a skilled new member of his professional team, Paul Basagoitia.

Laws in the United States do not stop enthusiasts, Shane McConky, JT Holmes, and Miles Daisher from risking their lives as they travel to Norway to learn from the best and push their limits in the Isterdalen Valley.

Holmes, Miles Daisher, Espen Fadnes, Andreas Barkhall, Hans Holmefjord, Tom Erik Heimen With some of the most challenging terrain on Earth being in the United States, two crews of world-class mountain bikers are sent out to create their own.

Mark Abma and Mike Wilson spend time at India's tiny resort of Gulmarg where they explore the grandest mountain range in the world, the Himalayas.

Meanwhile, Sean Pettit, Jacob Wester, and Henrik Windstedt experience Japan's never-ending powder and magnificent tree skiing where they claim some of their best days.