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 challenge 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

The reform of downhill racing continues at CranKworx Rotorua in New Zealand. Featuring a five-day schedule, new competition formats, and an extensive culture of mountain biking.

Location: Rotorua, New Zealand

Date: March 9th to March 13th

Must-watch reason: The first major downhill event of spring takes place at the slopestyle-rich CranKworx Rotorua. Will we see another rising star emerge after last year's winner Brett Rheeder?

Loic Bruni competing at the 2015 Lourdes Downhill World Cup round in famous French city of pilgrimage

Loic Bruni © Lukas Pilz

UCI MTB World Cup

Location: Lourdes, France

Date: April 9th-10th

Must-watch reason: Loïc Bruni, the young French rider who won his first World Championship title last season. 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 Championship

This marks a historic split between cross-country (XCO) and downhill (DH) events within UCI championships. The XCO event takes place from late June to early July in Czech Republic.

Location: Czech Republic

Date: June 28 - July 3

Must-watch reason：As global attention focuses on Rio Olympics this year，the annual championship may witness unexpected breakthroughs by unknown talent. Mathias Fluckiger has a chance to make history with victories alongside his brother Lukas 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 anniversary hosting events in North America，X-Games brings back thrilling BMX Park、Vert & Dirt competitions。

Location：Austin，Texas，USA（美国）

Date：June2nd-5th（具体日期待定）

必看理由：Daniel Sandoval took home gold medals twice during last year’s park finals; he aims high for another triumph while Daniel Dhers’ wealth of experience makes him another force to be reckoned with.

环法自行车赛

103rd edition awaits as one of cycling’s most prestigious events returns this summer.

With three weeks spanning over iconic landmarks such as Mont Ventoux.

Last season’s champion Chris Froome was crowned due to versatility; he remains top contender.

Location：France

Dates：July2nd-21st

Reasons why you should watch it:

World Champion Peter Sagan stands out among competitors but Mikhail Ignatyev from Russia also shows promise

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

Trans-Siberian Extreme

A grueling journey across Russian terrain stretches nearly ten thousand kilometers beginning from Moscow.

From Moscow to Vladivostok (total distance approximately nine hundred miles)

Dates July8 - August1st

Brandon Semenuk tucks no-hander at Red Bull Joyride.

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

Red Bull Joyride

Whistler Mountain Bike Park hosts Boneyard which becomes world-class slope-style course.

Location：Whistler Mountain Bike Park Canada（加拿大）\r\n\r\n Dates \r\n August (\r\n specific date TBA)\r\n Must-watch reasons:

Addition rivalry between Brandon Semenuk and Brett Rheeder.\r\n Both are Canadian representatives\r\n Winner will showcase their talents worldwide.\r\