Cobbles challenge

108.07 km 2799m alt. 2,59% avg. 28.1% max. 12 hours

Ride 5 cycling videos within 12 hours to be rewarded with a unique collectors item and listed as a Tacx Cobble Challenge hero! You’ll challenge a total distance of 108 km and climb over 60 kilometres, with an average incline of 1.5% and a max. slope of 28,1% on the Bosberg.

What would the start of the cycling season be without cobblestones? That’s why we’ve come up the Cobble Challenge: a selection of the finest cobblestone films available in our software. Like the iconic Muur van Geraardbergen, which was often the decisive climb in the Tour of Flanders. But you can also expect some fierce and impressive rides in the Swiss Alps. What about the Grimsel Pass, a killer climb of a whopping 27 km! Or the Gotthard Pass, an old cobbled climb with a length of nearly 14 km with an average gradient of almost 7%. The icing on the cake is the ruthless Bosberg, the hardest climb in this area of Flanders. Good luck with that!

To complete the challenge you’ll have to finish the following films within 12 hours (not necessarily in this order):

Name Distance (km) Uphill total (km) Avg. incline (%) Altimeters (m)
Swiss Alps Stage 1 – Gotthard Pass, Airolo 22,5 13,69 1,6 910
Muur Van Geraardsbergen – Belgium 19,58 16,06 0,5 193
Innertkirchen, Grimsel Pass 28,36 25,03 5,1 1474
Koppenberg 4,86 1,66 0,1 92
Dinant to Namur 32,77 4,49 0,2 130


  • Ride all 5 videos mentioned above in full.
  • Complete the 5 videos mentioned above within 12 consecutive hours.
  • Cheating by filling in an incorrect weight is not allowed, you’ll be disqualified and cannot join the challenge.
  • You’ll have to complete the challenge individually, it is not allowed to ride it with multiple riders.
  • It is not allowed to ride a film in parts, each film has to be completed in one session.

To enter and join the list of heroes, upload your activity on the right handed side of this page. Make sure our profile is set to “public” so we can check your entry. When you enter, you agree with the terms and conditions for Tacx promotions and activities. Please note: you’ll have to finish all the films mentioned above before submitting the form.

Cobbles challenge Heroes

nr. Name Country Date Time
1 Robert Zwingler Germany March 17th 2019 05:43:59
2 Fredrik Rothstein Sweden March 17th 2019 05:21:45
3 Goran D Slovenia March 19th 2019 05:50:02
4 Vincent Lewandowski France March 20th 2019 04:40:23
5 Greg Manns Belgium March 23rd 2019 06:43:17
6 Michel Gagnon Canada March 25th 2019 07:51:08
7 Bert van Zantvoort The Netherlands March 26th 2019 05:29:58
8 Dan Burke Canada March 29th 2019 08:14:26
9 Edward McDonnell USA March 29th 2019 04:52:33
10 Sergei Melnikov Russia March 30th 2019 04:14:16
11 Matt McLen-Howells Wales April 2nd 2019 05:21:38
12 Jacques Saint-Pierre Canada April 3rd 2019 06:25:19
13 Tjisse van der Hoek The Netherlands April 4th 2019 04:44:33
14 Marc Noten The Netherlands April 6th 2019 05:00:03
15 Jorge Sousa Portugal April 7th 2019 04:36:28
16 Sjoerd Douma Nederland April 11th 2019 04:42:31
17 Rudi Lammers Nederland April 13th 2019 04:53:26
18 Jon Jørgensen Denmark April 13th 2019 04:57:36
19 Peter Lenárt Slovakia April 13th 2019 05:04:34
20 Denise Johannsen Switzerland April 14th 2019 04:53:00
21 João Pombinho Portugal April 14th 2019 05:47:23
22 Kenneth Wiklund Sweden April 19th 2019 05:38:42
23 Janis Steins Latvia April 21st 2019 04:00:30
24 Roland Krismer Austria April 27th 2019 05:30:14
25 Alexandre GALMICHE France April 27th 2019 04:41:57
26 Peter Horvat Slovenia April 28th 2019 05:57:54
27 Jean Pierre Morin Canada April 29th 2019 06:55:06
28 Patrick Bals The Netherlands April 30th 2019 04:59:31
29 Matthias Mejuto Germany May 1st 2019 05:20:11
30 steve williams England May 4th 2019 04:52:07
31 Claudio Ferreira Brazil May 5th 2019 05:34:17
32 Franz Franz France June 4th 2019 04:47:40
33 Andreas Luginbuehl Switzerland June 10th 2019 07:40:02
34 Collin de Brouwer The Netherlands June 14th 2019 07:31:00
35 Eerke Berger Great Britain June 21st 2019 04:31:09

Completed the challenge?

Please fill out the form below and make sure you’ve set your profile on public. You can do so by changing your privacy settings to "Public" under "Manage profile" at Your submission will be confirmed and processed within 5 business days.

  • This field is for validation purposes and should be left unchanged.



Please check for the list of countries we ship to. If you’re living in another country, you’ll receive a unique Challenge badge instead.