The World's Steepest Climb? | Extreme E-Bike Climbing Challenge: The Slab

The World's Steepest Climb? | Extreme E-Bike Climbing Challenge: The Slab

Steep. Long. Slippery and unforgiving. A slab of limestone cut by glaciers thousands of years ago. It’s something we’re no stranger to, having seen the likes of Martyn Ashton and Chris Smith descend it’s face before, but nobody has ever attempted to ride up…

It’s (potentially) the world’s steepest climb. Chris and Steve wanted to know how far they could ride up on an Electric Mountain Bike… if it was even possible at all.

Our shop:

The world’s steepest residential road is Baldwin Street in New Zealand, three and a half kilometers long, averaging 35% with pitches of 38%. But we wanted to find something more extreme. Vittorio Brumotti rode the Lion’s Back in Utah, which has a peak gradient of 65%, but that isn’t enough.

We wanted to push the limits of possibility. What can an E-bike do?

This is the famous slab in Bristol Gorge, a destination for mountain bikers to ride DOWN, not up.
It’s 75%, thats 37 degrees. It’s 10 percent steeper than the Lion’s Head and almost twice as steep as Baldwin Street. Is it possible to go up, even with turbo mode?

We want to know about your steepest climbs. Know of anything steeper? Let us know and we’ll try and ride it!

If you’d like to contribute captions and video info in your language, here’s the link 👍

More videos…
📹 E-Bike vs Downhill Bike |
📹 Meet Chris Smith |

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Readers Comments (50)

  1. 🕉☪✝

  2. Gmbn should do it on a normal bike

  3. Next time use a 2019 TREK LT9 Well done Boys like the stuff you boys doing.

  4. Multi-Terrain Bike May 3, 2021 @ 12:16 am

    whooooooaaaaaaaa…… very scary

  5. 10:07 you can just see some graffiti balls lol

  6. John C Antony May 3, 2021 @ 12:17 am


  7. charles Lane27 May 3, 2021 @ 12:18 am

    I don’t think I want to go up or down on that one.

  8. Rafael Martin May 3, 2021 @ 12:22 am

    Get blake to give it a try

  9. Ruben Boucquez May 3, 2021 @ 12:25 am

    Why is That slab even there

  10. Is it cheating if you tack back and forth up the hill?

  11. Karthick Ashwath May 3, 2021 @ 12:27 am

    You can check out the scottish cliffs that Danny Mcaskill has climbed up on…they might be steeper

  12. Ofcourse someone’s drawn a massive shlong on the hill at 10 minutes 😂

  13. Awesome 👏🏻 😎

  14. What’s music starting at 7:17?

  15. Cordora Jepoy May 3, 2021 @ 12:31 am


  16. KK DeVeauXgue May 3, 2021 @ 12:34 am

    A motor on a mtb thats just absurd and lazy do the work

  17. I recently attempted swains lane with a mountain bike. Mate half way up my lungs felt like they were gonna fall out of mouth. No strategy whatsoever. Any tips on this?

  18. Station Rd, Wood St, Castle Road mow cop would beat this climb.

  19. Great video guys, really enjoyed this. Would have been nice to see a short attempt at the end on a regular bike, just for the comparison. Even if it was only 5meters 🙂

  20. That looks like every road in South America

  21. sticky tyre job done

  22. Drama queens

  23. Electric Mountain Bike Network May 3, 2021 @ 12:43 am

    Give us a thumbs up if you enjoyed ‘THE SLAB’! got any insanely steep surfaces near you? We want to know about them 👇 👇 👇

  24. Just use a crosser ?

  25. philip sawyers May 3, 2021 @ 12:44 am

    Well done boys

  26. So,. What was the wattage.

  27. There are quite a few open slabs in western North Carolina, but most are not as smooth or uniform as this one. The rock, however, is good hard metamorphic rock for the most part.

  28. DC Mac man flat out May 3, 2021 @ 12:47 am

    Should test all the motors in class there

  29. despookygamer spooky May 3, 2021 @ 12:48 am

    Now on a road bike

  30. Encinitas Watchdog May 3, 2021 @ 12:48 am

    What are he specs?

  31. Cordora Jepoy May 3, 2021 @ 12:48 am

    Thats was incredible climb

  32. Miggy LaChica May 3, 2021 @ 12:48 am

    … and I thought 27 was steep.

  33. Small-Time Garden May 3, 2021 @ 12:50 am

    Stop using your breath to talk to Chris and pedal up😆

  34. Imagine setting up some nice soap slides right there, the speed would be ridiculous

  35. When someone falls down : You Spin My Head Right Round Right Round .

  36. alors là chapeau.ça doit tirer dans les jambes .le cardio est a combien ? quelle est cette dalle de béton très pentue

  37. thats really scary

  38. ebikes are for sissy’s

  39. June Christopher Dapiroc May 3, 2021 @ 12:56 am

    How i wish i can afford that EMBN 🚲. If only.

  40. I expected the hill to be so steep the bikes would just slide down the hill so would the guys going up the hill if they stopped at all

  41. Lucas Rafael Desenhista May 3, 2021 @ 12:59 am

    looks like my street hehehe

  42. Michael Corse May 3, 2021 @ 1:01 am


  43. Kevin Murtagh May 3, 2021 @ 1:01 am

    Thought you would have put a smaller front wheel on it.

  44. Louis Milone May 3, 2021 @ 1:05 am

    Well if they had electric bikes💁

  45. I want roll down that in a zorb ball

  46. William Bergin May 3, 2021 @ 1:06 am

    No joke my Haibike Flyon would fly up that…

  47. gateaublasted May 3, 2021 @ 1:06 am

    This is not what I was looking for but it was a great find!!

  48. I’d be trying it on my Levo with the seat up and spinning to win sitting down.

  49. How my parents were travelling to school

  50. Dimas Ragil Jalu Wisang Jiwo May 3, 2021 @ 1:11 am

    Nice dude that air tire pressure, works a lot thanks for the tips

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