your info is wrong it is frowned apon for bikers to use the hiking trails you can only get the gondola to first then ride to the trails the chair lifts dont open in summer same with kl schidegg (train only after 4pm) there is plenty of unmarked trails you can use unfortunately the government is trying to ban single trail riding in the bernese oberland canton is better to go else where in switzerland where it is more bike friendly ie. davos where is open for bikes including lifts