---
title: "Will Bosi Completes Crux of Ondra’s Silence 5.15d, Calls It V16"
url: "https://climbingbrowser.com/news/will-bosi-crux-ondras-silence-5-15d-v16"
date: "2026-05-29"
source: "Gripped"
---

# Will Bosi Completes Crux of Ondra’s Silence 5.15d, Calls It V16

- **Source:** Gripped
- **Original story:** https://gripped.com/news/will-bosi-completes-crux-of-ondras-silence-5-15d-calls-it-v16/ "Permanent Link to Will Bosi Completes Crux of Ondra’s Silence 5.15d, Calls It V16"

## Summary

Will Bosi has made headlines by completing the crux of Ondra’s Silence, a climb graded 5.15d, and controversially labeling it as V16. This bold statement adds to the ongoing debate about climbing grades and the limits of the sport.

## Analysis

Will Bosi's recent completion of the crux of Ondra's Silence, a climb graded at 5.15d and labeled by him as V16, speaks volumes about the ever-evolving landscape of climbing difficulty and the unique training demands at such high levels. For recreational climbers, this highlights the importance of pushing personal limits within training. Bosi's ascent demonstrates not only physical strength but also the intricacies of technique and mental resilience necessary for tackling extremely difficult climbs. As climbers, understanding how elite athletes approach problems can help us review our own training methods and re-evaluate what we once thought was our limit.

Analyzing the skills required for Bosi's achievement can reveal vital training takeaways for recreational climbers. Focus should encompass not only finger strength—critical for gripping on small holds—but also power endurance, which enables sustained performance while making complex and challenging moves. With Bosi classifying the crux as a V16, which indicates a high level of bouldering difficulty, it reminds us that the combination of explosive strength and sustained effort is crucial. Incorporating power-endurance circuits into your routine could thus provide training that prepares you better for these challenging problems, making climbing not only about strength but also about executing well under pressure.

## Training Takeaway

Incorporate power-endurance training into your session this week by practicing 4x4s or interval training with difficult bouldering problems. This focus will enhance your ability to perform sustained high-intensity efforts efficiently and effectively.


---

Source: [ClimbingBrowser](https://climbingbrowser.com) — free evidence-based climbing training intelligence. Personal AI coaching on WhatsApp: [ClimbClaw](https://climbingbrowser.com/coach).