ma, a regolamento, esiste una definizione per i percorsi delle varie discipline?
Esiste, sebbene sia ampiamente interpretabile.
XC:
4.2.016 The course for a cross-country race normally includes a variety of terrain such as road sections, forest tracks, fields, and earth or gravel paths, and include significant amounts of climbing and descending. Paved or tarred/asphalt roads can not exceed 15% of the total course. *
4.2.017 The course must be wholly rideable even in difficult weather conditions. Parallel sections must be provided on sections of the course likely to deteriorate easily.
4.2.018 Extended single track sections must have periodic passing sections.
4.2.026 The sections of a cross-country course that involve steep or potentially dangerous slopes must be marked and protected using non-metallic, preferably PVC, stakes (slalom stakes), 1.5 to 2 meters high. In very fast sections of the course where the tec
hnical delegate or, in his absence, the president of the commissaires' panel deems it appropriate, small banners as per the diagram below can be used to mark off the course. The tape must be positioned on the ski gates/piping at a height which does not interfere with television shots (usually at 50 cm from the ground). "Zone A" sections must be at least 2 m wide.
4.2.027 Where course sections involve obstacles such as walls, tree stumps or tree trunks, hay bales or suitable padding must be used to protect the riders. Such protective measures must not restrict the rideability of the course. In appropriate areas, such as along the edge of steep drops, catch nets which comply with safety standards must be used. Nets or mesh fencing with openings greater than 5
cm x 5 cm may not be used. Any wooden bridges or ramps must be covered with non-slip surface (carpet, chicken wire or special anti-slip paint).
4.2.029 Wherever possible, roots, tree stumps, protruding rocks, etc. are covered in biodegradable fluorescent paint.
* per confronto, gli articoli 4.3.004 e 4.3.005 che riguardano la DH dispongono che "The course for a downhill must follow a descending route" e "The course comprises varied terrain sections: narrow and broad tracks, woodland roads and paths, field paths and rocky tracks. There normally are a mixture of fast and technical sections. The emphasis of the course is to test the riders' technical skills and their physical ability."