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Comment by leetcrew | Hacker News Reader

> 5.9+(grading for rock climbing, this being very difficult)

can you provide more context on this? this just seems a bit odd to me as a casual indoor climber. a 5.9 route isn't the easiest, but most of the holds are jugs and you can do the whole thing statically. a generally athletic person could probably climb a 5.9 in their first few visits to the gym.

I can definitely imagine that climbing a very long 5.9 route in full weather gear would be exhausting, but I wouldn't expect a world class mountaineer to find it technically challenging.

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Sure. Most of my experience is in California, but I've found the grading differences from region to region to be just large as from out of state or international.

I climb 5.11c+ comfortably in the gym. I can barely lead a short Yosemite 5.8 outdoors; it's terrifyingly more difficult. That's a bit on the high side of a delta, but still typical.

I would say the difference is 75%+ in the scales simply not being the same. For the same grade, the holds would be far smaller, positions much more technical, often far more sustained, etc. The other ~25% is the environment is much more challenging, even with perfect weather at sea level: route finding is harder, you have to manage gear, leading is scary, etc.

I've done a few high Sierra climbs. Grades there are little softer, and my limit is probably ~5.7

For what it’s worth, there is also a wide variance in grading between different indoor gyms and different outdoor climbing areas.

Yosemite grades are notoriously hard; the most popular gym chain in California (which I love!) grades are notoriously soft. YMMV at other gyms and at other outdoor crags.

At the end of the day it’s a subjective guide, I wouldn’t get too hung up on the numbers.

There's also the factor for people who climb inside a lot that they have very inefficient movements outside.

Because the grips aren't as obvious, a lot of effort is wasted looking for placements that would be immediate indoors.

"Grips"? I guess you mean "holds" (indoors). "Placements"? That's where you place gear, not your fingers, and you don't place gear in climbing gyms. I appreciate your enthusiasm, but pretending to have knowledge of something you know nothing about is a real problem on HN (and the internet in general). Best to say nothing than make a fool of yourself – something I'm still learning.

Alternatively, they speak a different language with different terminology and are translating. I know a few climbing terms in French and they're quite different.

What would be helpful is commenting on whether their assertion is correct or not w.r.t efficiency.

It’s definitely true. The high visibility of holds in the gym makes it easy to move quickly, even your first time up it, which saves a lot of energy.

Outside, the good and bad holds are probably the same color, and may be oriented in weird ways that require some feeling around to find the best way to grip them or stand on them.

Over time, climbers outside can learn to read the rock and make very good guesses about how to reach or step for the next usable hold. But it takes time to learn, and is somewhat location-specific because of the widely varying geology of climbable rock.

> Best to say nothing than make a fool of yourself – something I'm still learning.

I love seeing people plumb the depths of irony this way.

This difference is mostly about the rock and the technique. Granite is very different from limestone and Yosemite cracks are very very different from a gym. (And Tuolumne domes are yet another thing.) If you spent a summer climbing in Yosemite you'd get comfortable with the style and the grades and they'd make more sense to you.

Conversely if you took a trip to Smith Rock or Owens River Gorge you'd get a much closer correspondence between gym ratings and rock ratings.

5.9 in the gym and 5.9 outdoors are wildly different levels of difficulty. Depending on location an outdoor 5.9 could be the equivalent of anything from a 5.11a to a 5.12 and in addition you’re on lead which adds another significant level of difficulty.

I climb the same in the gym on lead as outside. I think this is being exaggerated in this thread or its something specific to bay area or something.

Sport vs trad grades outdoors are very different animals.

5.9+ doesn't mean "harder than 5.9," it's a specific grade of indeterminate difficulty. YDS used to top out at 5.9 before 10a and the gang were added. Any climb that's graded 5.9+ pre-dates the extension of YDS beyond 5.9.

Unfortunately, some gyms are now using 5.9+ to mean a grade between 5.9 and 5.10a, which is very different than the traditional meaning of 5.9+.

I've climbed v6 in the gym and 11c sport routes outside. There are 5.6 granite pitches that absolutely kick my ass. The sandbagged grades are very real in the mountains, and the style of climbing is totally different from whatever you see in the gym (flaring offwidth cracks are my weakness, the only ''gym'' I saw that had anything like it was a shed owned by a guy who made first ascents in Li Ming).

What's a 5.6 route you've felt challenged on? And was it the runout that did it, or the actual physical difficulty of the moves? I ask because I've done a lot of climbing outside and I never ran across something that was graded 5.6 but that was as physically demanding as a V6. I have climbed long, highly runout 5.6 that required good mental fortitude.

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