The rating of a climb is a subjective indication of the technical difficulty of the route or pitch to which it applies. All rating systems (apart from the British system) use the difficulty of the crux (the most difficult move or series of moves) to determine the rating, at least in principle. Often though, the rating is upped a bit if a climb is sustained (i.e. has a very long series of very difficult moves).
Generally, the climber who makes the first ascent determines, or at least suggests, the rating. Of course, adjustments after a few ascents have been made are not uncommon.
Apart from free climbing ratings, there are a number of other systems in use to qualify climbs:
The following table has a basic comparison chart for (some of) the different free climbing rating systems that are in use around the world.
UIAA | YDS |French|Aussie| UK | Saxon |Czech | Nor | Swe | ------------------------------------------------------------------ 1 | 5.2 | 1 | 10 | easy | I | | | | ------|-------|------|------|---------|-------| | | | 2 | 5.3 | 2 | 11 | m | II | | | | ------|-------|------|------|---------|-------| | | | 3 | 5.4 | 3 | 12 | d | III | | | | ------|-------|------| |---------|-------| | | | 4 | 5.5 | 4 |------| hvd | IV | | | | ------|-------| | 13 |---------|-------| | | | 5- | 5.6 |------| | ms | V | | | | ------|-------| 5 |------|---------|-------| |-----|-----| 5 | 5.7 | | 14 | 4a : s | VI | | 5- | 5- | ------| |------|------|----: |-------| |-----|-----| 5+ |-------| 5+ | 15 | 4b :vs | VIIa |------| 5 | 5 | ------| 5.8 | |------|----: | | 6 |-----|-----| 6- | | | 16 | 4c :hvs |-------|------| 5+ | 5+ | |-------| |------|----: | VIIb | 7 | | | ------| 5.9 |------| 17 | 5a : | | |-----|-----| 6 | | 6a |------| : |-------|------| 6- | 6- | ------|-------| | 18 |----: | VIIc | 7a | | | 6+ | 5.10a | |------| 5b : e1 | | |-----|-----| |-------| | 19 | : |-------|------| 6 | 6 | ------| 5.10b | 6a+ |------|----: | VIIIa | 7b | | | 7- |-------|------| 20 | 5c : | | |-----|-----| | 5.10c | 6b | | : | | | | | ------|-------| |------| : |-------|------| 6+ | 6+ | 7 | 5.10d | | 21 | : e2 | VIIIb | 7c | | | |-------| 6b+ | | : | | |-----| | ------| 5.11a |------|------| : |-------|------| 7- | | 7+ | | 6c | 22 |----: | VIIIc | | |-----| |-------| |------| 6a : | | | | 7- | ------| 5.11b | | 23 | : e3 |-------| | | | 8- |-------| 6c+ |------| : | IXa | |-----| | | 5.11c |------| 24 | : | | | 7 | | ------|-------| 7a |------| : |-------| | |-----| 8 | 5.11d | | 25 |----: e4 | IXb | |-----| 7 | |-------| | | 6b : | | | 7+ | | ------| 5.12a | |------| : |-------| | |-----| 8+ |-------| 7a+ | 26 | : | IXc | |-----| 7+ | | 5.12b |------| | : | | | 8- | | ------|-------| 7b | | : |-------| | | | 9- | 5.12c | |------| : e5 | Xa | |-----|-----| | | 7b+ | 27 |----: | | | 8 | 8- | ------|-------|------| | 6c : |-------| | | | 9 | 5.12d | 7c |------| : | Xb | | |-----| |-------| | 28 | : | | | | 8 | ------| 5.13a | |------| : e6 |-------| |-----| | 9+ |-------| 7c+ | 29 |----: | Xc | | 8+ | | | 5.13b |------|------| 7a : | | | | | ------| | 8a | 30 | : |-------| |-----|-----| 10- |-------| |------| : | | | 9- | 8+ | | 5.13c | 8a+ | 31 | : |-------| | | | ------|-------|------|------| : e7 | Xc | | |-----| 10 | 5.13d | 8b | 32 | : | | |-----| 9- | |-------| |------|----: | | | 9 | | ------| 5.14a | | 33 | 7b : | | | |-----| 10+ | | 8b+ | | : | | | | 9 | |-------|------| | : e8 | | |-----| | ------| 5.14b | 8c | | : | | | 9+ | | 11- |-------| | | : | | | |-----| | 5.14c | | | : | | |-----| 9+ | ------|-------| 8c+ | | : e9 | | | | | 11 | 5.14d |------| | : | | | |-----| |-------| 9a | | : | | | | | | | | | : e10| | | | |
Although the YDS is the most popular rating system in North America, other systems exist (you may have that old guidebook that still lists them). Some may have the NCCS scale (see below), others may have an old YDS that stops at "5.10" no matter how hard that climb is (my old Carderock guidebook had one of those and the "5.10" in there was corrected to a "5.12" when the new guide came out).
NCCS | F7 | F8 | F9 | F10 | F11 | F12 | F13 | F14 | F15 | F16 | -----|------------------------------------------------------------ YDS | 5.7 | 5.8 | 5.9 |5.10b|5.10d|5.11b|5.11d|5.12b|5.12d|5.13a|
|-----------------| |EASY | |-----------------| |MODERATE | |-----------------| |DIFFICULT | |-----------------| |VERY DIFFICULT | |-----------------| |4a | | | |---|SEVERE| |------| |4b | | HARD | | |---|------|SEVERE| VERY |------| |4c | | |SEVERE| HARD | |---| |------| | VERY |----| |5a | | |SEVERE| | |---| |------| | |----| |5b | |------| E1 | | |---| | | |----|----| |5c | | | E2 | | | |---| |----| | | |----| |6a | | | E3 | | | |---| |----| | E4 | |----| |6b | | | | E5 | | |---| |----| | | | |6c | | | | E6 | |---| |----|----| to | |7a | | E9 | |---| | | |7b | | | |---| |----|
The Saxon rating system, however, is not complete without the rating scale for Jumps. For those of you not familiar with the Elbsandsteingebirge, some routes require horizontal dynos. Most often, that means standing on one sandstone tower and lunging for a hold on an adjacent tower - bridging the void between them. Those jumps are rated using arabic numerals between 1 and 4, where 1 is easy and 4 is a very difficult jump. Personally, I almost wet my pants on a "1". I don't ever want to find out what a "4" is like...
New RSA |13 |14| 15|16|17| 18|19|20| 21|22|23| 24|25|26| 27|28|29| 30|31|32|33| --------|---------------------------------------------------------------------- Old RSA | E | F1 | F2 | F3 | G1 | G2 | G3 | H1 | H2 | H3 | I1 | I2 | I3 | J |
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