Lone rider embarks on a frozen odyssey

Iditarod, the world's most grueling bike race, spans 350 kilometers of Alaskan tundra in extreme cold and limited supply conditions.

Location: Alaska

Date: February 28th

Must-watch for its sheer brutality, as riders must possess superhuman determination to complete the treacherous course.

Tomas Zejda tackles Crankworx Slopestyle in Rotorua, New Zealand on March 29th, 2015.

Crankworx Rotorua © Graeme Murray/Red Bull Content Pool

Crankworx Rotorua - A five-day mountain biking extravaganza that redefines the sport with its innovative format and massive slopes.

Location: Rotorua, New Zealand

Date: March 9th-13th

Brett Rheeder takes top honors at Kelly McGarry-designed course last year; will we see another rising star this season?

Loic Bruni competing at the 2015 Lourdes Downhill World Cup round in France.

Loic Bruni © Lukas Pilz

UCI MTB World Cup - Witness Loïc Bruni's quest to maintain his championship title after winning it all in his first attempt last year.

Location: Lourdes, France

Date: April 9-10

The men start the XCO World Cup in Nove Mesto.

Nove Mesto World Cup © Bartek Woliński/Red Bull Content Pool

UCI XCO MTB World Championship - The first-ever separate events for Cross-Country and Downhill will take place from June-end to July-start in Czech Republic.

Location: Czech Republic

Date: June-end to July-start

Mathias Fluckiger has a chance to break through at Nové Město and claim victory.

Coco Zurita performs at BMX Vert Finals during X Games Austin.

Coco Zurita/X Games © Garth Milan/Red Bull Content Pool

X Games - Celebrating its third year in America with thrilling BMX Park, Vert & Dirt competitions.

Location: Austin, Texas USA

Date: June (exact dates TBA)

Daniel Sandoval aims for back-to-back victories while Daniel Dhers brings extensive experience into contention.

Tour de France - The legendary event marks its centennial edition this summer with three weeks of racing featuring iconic climbs like Mont Ventoux. Chris Froome is favored but Peter Sagan could surprise everyone again.

Location & Date TBA

Sagan's climbing prowess has been improving steadily; can he pull off an upset?

Mikhail Ignatyev from Russia performs during Red Bull Trans-Siberian Extreme stage Moscow-Kostroma.

Red Bull Trans-Siberian Extreme © Denis Klero/Red Bull Content Pool

Trans-Siberian Extreme – This epic journey spans over 9159 kilometers across Russian terrain starting from Moscow to Vladivostok.

Start Location & Date TBA

Brandon Semenuk soars through Boneyard during Red Bull Joyride.

Brandon Semenuk / Red Bul