Lone rider embarks on a frozen odyssey © Brudder/Getty Images

Iditarod: The World's Most Brutal Bike Race

In the harsh, unforgiving landscape of Alaska, the Iditarod bike race pushes riders to their limits. This 350km endurance test takes place in extreme cold and with minimal supplies.

Location: Alaska

Date: February 28th

Must-watch for its sheer brutality and the mental fortitude required to complete it.

Tomas Zejda riding at Crankworx Slopestyle in Rotorua, New Zealand on March 29th, 2015

Crankworx Rotorua: A Revolution in Mountain Biking Culture

The reform of mountain biking will continue at Crankworx Rotorua in New Zealand. With a five-day schedule, new competition formats, and large-scale mountain biking culture.

Location: Rotorua, New Zealand

Date: March 9-13th

Brett Rheeder competing at the Red Bull Joyride in Whistler BC Canada on August 30th, 2015

Red Bull Joyride:

The world's best slopestyle event returns to Whistler Bike Park's Boneyard stage.

Location: Whistler, Canada (Whistler Bike Park)

Date: August (exact date TBA)

UCI MTB World Cup:

A showcase of downhill racing skills as Loic Bruni aims to maintain his championship title.

Location: Lourdes, France

Date: April 9-10

UCI XCO MTB World Championship:

A unique opportunity for lesser-known riders to emerge as champions as UCI splits cross-country and downhill races into separate events.

Location: Czech Republic (Nové Město)

Date: June 28 - July 3

X Games Austin:

Celebrating its third year in America with BMX Park Vert & Dirt competitions that promise thrilling action sports performances.

Location & Date:

环法自行车赛（Tour de France）: A three-week journey featuring iconic climbs like Mont Ventoux as Chris Froome seeks another victory after last year's win.

Location & Date:

Trans-Siberian Extreme:

A grueling race spanning over Russia from Moscow to Vladivostok covering an incredible distance of nearly ten thousand kilometers.

Red Bull Rampage:

Aaron Gwin puts practice into motion during World Cup finals day Val di Sole

UCI DH MTB World Championships:

Szymon Godziek performs at Red Bull Rampage