Series 1 Episode 4
First Broadcast: 8PM Sun 19 January 2014

Guy sets out to break the record for the world's fastest gravity powered sled.

With the help of top sports science engineers, athletes and experts in composite engineering, Guy builds a toboggan to ride on the unforgiving slopes of the Pyrenees as he attempts to claim the record from a group of thrill-seeking Germans who set it three years earlier.

Guy experiences his first taste of going blisteringly fast on ice, at the famous Cresta Run in St Moritz, before a crack team of engineers from Sheffield Hallam University help him build a prototype toboggan.

Then the fastest woman to ever to have ridden a skeleton bob, Amy Williams, gives him some tips on flying head-first down the 180-metre slope.

He also races a drag bike at Santa Pod raceway, to help him master precision steering using his body weight alone, and also to help him find a way of stopping the sled safely, using a bespoke parachute system.

Guy tries to break the record at Grandvalira in Andorra on the speed ski slope Pista Riberal. Despite the danger, Guy will hopefully steer himself into the record books.

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    1. Speed with Guy Martin World's Fastest Toboggan Episode 4

      Guy sets out to break the record for the world's fastest gravity powered sled.

      • This episode has subtitles available.
      Watch the intro to Speed with Guy Martin - World's Fastest Toboggan clips
      1. S1-Ep4: Death Talk This video is a intro S1-Ep4: Death Talk Video duration: 0:53 minutes

        A serious briefing for the Cresta Run
    2. Speed with Guy Martin Human Powered Aircraft Episode 3

      Guy is on a mission to do the seemingly impossible: fly using muscle power alone. He wants to build the world's fastest…

      • This episode has subtitles available.
      Watch the intro to Speed with Guy Martin - Human Powered Aircraft clips
      1. S1-Ep3: All in the Wings This video is a intro S1-Ep3: All in the Wings Video duration: 1:32 minutes

        Guy learns the technical process of an HPA
      2. S1-Ep3: The Best Team This video is a clip S1-Ep3: The Best Team Video duration: 1:37 minutes

        Guy Martin recruits two of the best fro his challenge
    3. Speed with Guy Martin Hydroplaning Bike Episode 2

      Guy attempts to set the world record for riding a motorcycle on the surface of water.

      • Don't try any of these stunts at home
      • This episode has subtitles available.
      clips
      1. S1-Ep2: Record Attempt This video is a clip S1-Ep2: Record Attempt Video duration: 0:58 minutes

        Guy's first attempt at the record
      2. S1-Ep2: Testing Problems This video is a clip S1-Ep2: Testing Problems Video duration: 1:02 minutes

        Equipment failure halts the tyre tests
      3. S1-Ep2: Hydroplaning This video is a clip S1-Ep2: Hydroplaning Video duration: 0:57 minutes

        Guy test drives the F1 boat
    4. Speed with Guy Martin Britain's Fastest Cyclist Episode 1

      Guy attempts, with the help of slipstreaming, to break the British record for outright speed on a bicycle: an…

      • Don't try any of these stunts at home
      • This episode has subtitles available.
      Watch the intro to Speed with Guy Martin - Britain's Fastest Cyclist clips
      1. S1-Ep1: Test Drive This video is a intro S1-Ep1: Test Drive Video duration: 0:57 minutes

        Guy drives Dave Jenkin's lorry for first time
      2. S1-Ep1: Final Checks This video is a clip S1-Ep1: Final Checks Video duration: 0:59 minutes

        The build up to the final attempt
      3. S1-Ep1: Need for Speed This video is a clip S1-Ep1: Need for Speed Video duration: 1:02 minutes

        Jason Rourke and Guy discuss why he likes going fast
    1. S1-Ep1: Final Checks This video is a clip S1-Ep1: Final Checks Video duration: 0:59 minutes

      The build up to the final attempt Watch Speed with Guy Martin Britain's Fastest Cyclist
    2. S1-Ep1: Need for Speed This video is a clip S1-Ep1: Need for Speed Video duration: 1:02 minutes

      Jason Rourke and Guy discuss why he likes going fast Watch Speed with Guy Martin Britain's Fastest Cyclist
    3. S1-Ep1: Test Drive This video is a intro S1-Ep1: Test Drive Video duration: 0:57 minutes

      Guy drives Dave Jenkin's lorry for first time Watch Speed with Guy Martin Britain's Fastest Cyclist
    4. S1-Ep2: Hydroplaning This video is a clip S1-Ep2: Hydroplaning Video duration: 0:57 minutes

      Guy test drives the F1 boat Watch Speed with Guy Martin Hydroplaning Bike
    5. S1-Ep2: Record Attempt This video is a clip S1-Ep2: Record Attempt Video duration: 0:58 minutes

      Guy's first attempt at the record Watch Speed with Guy Martin Hydroplaning Bike
    6. S1-Ep2: Testing Problems This video is a clip S1-Ep2: Testing Problems Video duration: 1:02 minutes

      Equipment failure halts the tyre tests Watch Speed with Guy Martin Hydroplaning Bike
    7. S1-Ep3: All in the Wings This video is a intro S1-Ep3: All in the Wings Video duration: 1:32 minutes

      Guy learns the technical process of an HPA Watch Speed with Guy Martin Human Powered Aircraft
    8. S1-Ep3: The Best Team This video is a clip S1-Ep3: The Best Team Video duration: 1:37 minutes

      Guy Martin recruits two of the best fro his challenge Watch Speed with Guy Martin Human Powered Aircraft
    9. S1-Ep4: Death Talk This video is a intro S1-Ep4: Death Talk Video duration: 0:53 minutes

      A serious briefing for the Cresta Run Watch Speed with Guy Martin World's Fastest Toboggan
    10. Hydroplaning Bike This video is a extra Hydroplaning Bike Video duration: 1:45 minutes

      Guy recalls his early attempts to set the world record for riding a motorcycle on the surface of water

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Motorcycle racer and mechanic Guy Martin undertakes a series of speed-based challenges, exploring the boundaries of physics and learning about the science of speed