The Solothurn - Grenchen is a 17.7 km trail that starts in Solothurn, Amtei Solothurn-Lebern, Switzerland. Based on our data, the trail is graded as Medium. For information on how we grade trails, please click here. Also, check our latest community posts for trail updates.This trail can be completed in approx 5 hrs 24 mins. Caution is advised on trail times as this depends on multiple variables. For more info, click here.Photo Credit :GestumblindiGuest blindness