Silence | 9c Sport route in the Flatanger Cave

Norway / Trøndelag / Flatanger kommune / Flatanger

Quick Info

Grade 9c
Type Sport route
Crag Flatanger Cave
Country Norway 🇳🇴
Rock type Gneiss
History
First ascent Adam Ondra (3rd Sep 2017)
Bolted by Adam Ondra (2013)
Recorded repeats 0

Quick Info

Grade 9c
Type Sport route
Crag Flatanger Cave
Country Norway 🇳🇴
Rock type Gneiss
History
First ascent Adam Ondra (3rd Sep 2017)
Bolted by Adam Ondra (2013)
Recorded repeats 0
Bolted by Adam Ondra in 2013. Also known as Project Hard. Grade breakdown: 8b G 8C M 8B B 7C+ G 7B.

Silence was established by Adam Ondra in 2017. It was the first route to be graded 9c and is still a contender for the hardest sport climb in the world. Bolted by Ondra and originally dubbed Project Hard, it features a notoriously strange boulder problem crux with feet-first jamming through a slopey crack. Ondra rated this section alone 8C, whilst Will Bosi and Stefano Ghisolfi thought 8C+ was more appropriate.

Bosi and Stefano Ghisolfi have put serious time into trying to repeat the route, with both climbers linking the crux section.

References

[1] Will Bosi giving a very detailed breakdown (2026) https://www.youtube.com/watch?v=_CyaewHQiU8

Contributors
52 contributions since 16th February 2021.
20 contributions since 17th March 2026.
5 contributions since 8th July 2026.
1 contribution since 18th June 2026.

Lists


Pics + Vids

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Ascents

1 successful ascent and 3 unsuccessful attempts recorded.

Climber Style Ascent Date Suggested Grade
First ascent.

The first 9c in the world and a new benchmark in sport climbing. Adam spent a lot of time training specifically for the route, going as far as to strengthen his calves so he could get a better rest out of the kneebars.

References

[1] Send Film https://www.youtube.com/watch?v=ZRTNHDd0gL8

[2] Photo by Keith Sharples https://www.instagram.com/p/C8fK3MPB7eH/?img_index=1

Pete had a little play on the crack section to see if he could work out a sequence.

References

[1] https://www.youtube.com/watch?v=fQWHvDvtMFs

Suggested grade breakdown: 8b+ G 6C M 8C+ M 8A+ B 7C+ G 6B.

Around 20 sessions just to link the crux boulder. [5]

References

[1] Live Q&A https://www.youtube.com/watch?v=BNAfAujGczo

[2] Footage from Will's first trip in 2025 https://www.youtube.com/watch?v=ujb7YRfE-7k

[3] Will found new beta for the crux in his second trip https://www.instagram.com/reel/DYM9-ezKidJ/

[4] Linking the crux sequence for the first time https://www.youtube.com/shorts/LMIqR4A_eHs

[5] https://youtu.be/41KxMZWxx8g?is=tclFz_p5ZyLe_Bkn

[6] Working goes in September 2026 https://youtube.com/watch?v=dS3IGCl62p8

[7] A very detailed breakdown https://www.youtube.com/watch?v=_CyaewHQiU8