http://www.imba-europe.org/events/trail-building-school-val-di-sole
Potrebbe anche interessarti
http://www.solobike.it/mountain-bike/news/Sondaggio-IMBA-Europa-sulle-abitudini-dei-MTBiker
http://www.bicimagazine.it/notizie/item/522-2-trail-building-school-imba-italia.html
http://www.mtb-mag.com/un-successo-il-primo-corso-imba-di-trailbuilding/