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Public-images-osm logo.svg mtb:scale:imba
Osm element key.svg
A classification scheme for the difficulty of specifically designed trails for mountainbiking. Edit this description in the wiki page. Edit this description in the data item.
Group: Properties
Used on these elements
may be used on nodesmay be used on waysshould not be used on areasmay be used on relations
Useful combination
Status: approvedPage for proposal

The Trail Difficulty Rating System shall be used for mountain bike trails which are specifically designed and designated for mountain biking, to be found in "Bikeparks", for example. For "natural" trails it is advised to use mtb:scale=* and mtb:scale:uphill=* instead.

mtb:scale:imba=0 to 4.
0 refers to Easiest (white circle), 1 is Easy (green circle), 2 is More Difficult (blue square), 3 is Very Difficult (black diamond), and 4 is Extremely Difficult (double black diamond).
IMBA Trail Difficulty Rating System.jpg

Graphics reused with permission from IMBA. Updated original found here.