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

Iditarod, the world's most brutal solo bike race. A 350km grueling mountain road endurance test for riders who must brave extreme cold and scarce supplies in Alaska's tundra.

Location: Alaska

Date: February 28th

Must-watch reason: Only those with extraordinary willpower can complete this arduous race, as the harsh Alaskan winter environment is not for the faint of heart.

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

Crankworx © Graeme Murray/Red Bull Content Pool

CranKworx Rotorua - Revolutionizing Mountain Bike Racing Culture. Five days of racing, formats and big-mountain culture to be redefined.

Location: Rotorua, New Zealand

Date: March 9th-13th

Must-watch reason: The first spring single-track showdown at CranKworx Rotorua promises thrilling action on an extreme slope-style course. Will we see another rising star take center stage after last year's champion Brett Rheeder?

Loic Bruni competing at the 2015 Lourdes Downhill World Cup round in France’s famous pilgrimage city

Loic Bruni © Lukas Pilz

UCI MTB World Cup

Location: Lourdes, France

Date: April 9th-10th

Must-watch reason: Loïc Bruni, the young French phenom who won his first World Championship title in his debut season last year. Can he maintain his dominance and claim victory again?

The men start the XCO World Cup in Nove Mesto.

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

UCI XCO MTB World Championships - A historic split between Cross-Country (XCO) and Downhill (DH) events for the first time ever. The XCO event takes place from June-end to early July in Czech Republic.

Location: Czech Republic

Date: June-end to early July

Must-watch reason：As attention turns towards Rio Olympics this summer，this year’s championships may unveil unknown talents amidst global competition。Mathias Fluckiger and brother Lukas could make a successful breakout during Nové Město.

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

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

X Games - Celebrating its third year hosting top-notch BMX Park、Vert & Dirt competitions.

Location：Austin，USA

Date：June2nd-5th

Must-watch reason：Daniel Sandoval seeks repeat success after winning last year’s park competition but keep an eye out for Daniel Dhers with five-time X-Games Park winner experience under his belt。

环法自行车赛 —— La Grande Boucle的第103届赛事将在今年7月展开。这场历时3周的比赛将再次爬上名声显赫的旺图山(Mont Ventoux)。去年冠军Chris Froome，以其全面的公路骑士风格赢得了比赛，这位英国选手也成为了本届赛事夺冠热门之一。

地点：法国

日期：7月2至21日

必看理由：

世界冠军、前红牛车队车手Peter Sagan一直是外界关注的焦点，但他的爬山技巧不断进步，他丰富的计时赛经验使他成为一位不可忽视的人物。

Mikhail Ignatyev from Russia, Paolo Aste from Italy perform during Moscow-Kostroma stage of Red Bull Trans-Siberian Extreme

Red Bull Trans-Siberian Extreme

Trans-Siberian Extreme —— 跟着传说中的西伯利亚铁路遥相呼应，这场分段赛是世界上最长，最具挑战性的单人自行车活动，从莫斯科到佛拉迪沃斯托克，全程9159公里。

位置从莫斯科到佛拉迪沃斯托克（全长9195公里）

日期7月5日至28日

Brandon Semenuk tucks into a no-hander during Red Bull Joyride

Brandon Semenuk / Red Bull Joyride Scott Serfas / Red Bull Content Pool

Redbull Joyride —— 加拿大Whistler单车公园Boneyard舞台上的世上最佳Slopestyle大奖赛。

位置加拿大Whistler （加拿大）

日期八月（具体日期请关注最新消息）

必看理由：

两位加拿大选手 Brandon Semenuk 和 Brett Rheeder之间激烈较量。Semenuk四次Joyride冠军，而Rheeder被视为他的继任者。但是，在这个全球最大舞台上能否证明自己的才华呢？

Aaron Gwin practices ahead of finals day at Val di Sole DH WC

Aaron Gwin Bartek Woliński / Red Bul