Complete Human Land Travel Scale (CHLT)

Category	Notes	Examples
0.0-0.9	- No-brainier hiking, generally involves trails - May involve easy cross country - "avid hiker" (0.1 and up) - Almost anyone can reach 0.9 with a year of dedicated physical conditioning	- San Diego, Cowles Mountain (0.0) - San Diego, Iron Mountain (0.0) - Fremont, Mission Peak (0.1) - Mt. Baldy, Ski Hut Trail (0.3) - San Gorgonio, Vivian Creek Trail (0.4) - Kilimanjaro, regular route (0.5) - Half Dome, Cables route (0.8) - Mt. Whitney Trail (0.9)
1.0-1.9	- Moderately long trails or easy mountaineering/climbing routes - May involve simple off-trail navigation	- Ohlone Trail (1.0) - Cactus to Clouds (1.3) - Mt. Shasta, Avalanche Gulch (1.4) - Mt. Whitney, Mountaineer's Route (1.5)
2.0-2.9	- Very long trail hikes (150+ miles), or shorter routes which require significant off trail travel	- Triplet Rocks [Attain true highpoint] (2.4) - Half Dome, Snake Dike (2.4) - Mt. Whitney, East Buttress (2.5) - John Muir Trail (2.5) - Most ultra thru-hikes, such as PCT and AT (2.6)
3.0-3.9	- Significant off-trail travel required - Decent knowledge of mountaineering or climbing	- Snow Creek- Mt. San Jacinto (3.0) - Glacier Divide Traverse (3.4) - Folly Ridge (3.5) - NE Ridge of Mt. Williamson (3.6)
4.0-4.9	- Significant mountaineering/climbing required	- Evolution Traverse (4.3) - Convoluted Bliss (4.4) - Full Palisade Traverse (4.7) - Denali, Cassin Ridge (4.9)
5.0-5.9	- "Professional level" mountaineering or climbing	- Incredible Hulk, Positive Vibrations (5.0) - Infinite Spur (5.0)
6.0-6.9	- "Game Changer"	- High South Grand Traverse (6.1) - Hummingbird Ridge (6.5)
7.0-7.9	- World class mountaineering or climbing	- El Capitan, The Nose [Free climb] (7.0)
8.0-8.9	- "World class game changer"	- Full Waddington Basin Traverse (8.5) - Fitz Traverse (8.5) - Dawn Wall [Free climb] (8.5)
9.0-9.9	- What many present day world class mountaineers and climbers think is impossible, but may actually be possible in practice	- Complete Annapurna Traverse (9.0)
10+	- Likely, but not impossibly, beyond physical human capability	- Himalayan Crest Traverse (10+)
10++	- Actually physically impossible - Similar to the "class 6" concept in the Yosemite Decimal System	- Mars, Olympus Mons from key col [without a spacesuit] (10++) - Attempting to climb a 1,000 ft completely smooth overhanging wall of ice without any tools while naked (10++)