Lone rider embarks on a frozen odyssey

Iditarod, the world's most grueling bike race, spans 350 kilometers of Alaskan wilderness in extreme cold and scarcity.

Location: Alaska

Date: February 28th

Must-see reason: Riders must possess superhuman willpower to complete this brutal challenge in the harsh Alaskan winter.

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

Crankworx Rotorua © Graeme Murray/Red Bull Content Pool

CranKworx Rotorua reformulates mountain bike culture with five days of racing, formats, and big-mountain culture.

Location:Rotorua, New Zealand

Date: March 9th -13th

Must-see reason：The first major mountain bike event of spring takes place at the slopestyle-focused 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 the famous French city of pilgrimage

Loic Bruni © Lukas Pilz

UCI MTB World Cup

Location: Lourdes, France

Date: April 9th -10th

Must-see reason：French young gun Loïc Bruni won his first UCI World Championship title in his debut season; can he maintain his winning streak and claim more crowns?

The men start the 2015 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 separation between cross-country (XCO) and downhill (DH) events within UCI championships. The six-day November event takes place from June-end to July-starting next year.

Location：Czech Republic

Date：June-end to July-starting next year

Must-see reason：As global attention focuses on Rio Olympics next summer，this year's championship may surprise us with unknown talent emerging among numerous participants. Mathias Fluckiger has an opportunity for success alongside 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 celebrates its third anniversary hosting BMX Park & Dirt events for enthusiasts worldwide.

Location：Austin USA

Date：June2nd -5 th

Must-watch for Daniel Sandoval aiming to defend his crown while keeping an eye out for seasoned competitor Daniel Dhers' potential victory.

环法自行车赛 enjoys fame as one of cycling’s greatest races ever held since its inception over a century ago – offering three weeks spanning iconic climbs like Ventoux Mountain(Mont Ventoux).

Location :France

Date :July2nd -21st

Must-watch because Peter Sagan is known as an underdog but possesses great climbing skills that are constantly improving; counting heavily on experience gained through time trials makes him worth watching closely during this race.

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

Red Bull Trans-Siberian Extreme

Trans-Siberian Extreme follows legendary railway routes across Siberia – it is considered as world’s longest multi-stage competition.

Location :Moscow-Vladivostok(9195km)

Date :July5 th -28 t h

Sure-to-be-watched due to Brandon Semenuk vs Brett Rheeder showdown.

Aaron Gwin puts some practice into action during Val di Sole finals day

Aaron Gwin

UCI DH MTB Championships

Val di Sole Italy

August (exact date TBA)

Gwin could be called "the king" when it comes to dominating courses around the globe but still lacks a medal from Worlds; might he have eyes set upon rainbow jersey?