Die Bigge flussaufwärts bis zur Quelle

Start and finish for this tour is the fairground in Heidberg. From here it initially goes uphill, passing two fish ponds, towards Hahn and after crossing the A45 parallel to the next crossing. Now we follow the path marked with X (Hiking Trail of German Unity) over the Jägerfichte down to Rüblinghausen. Now we turn right and follow the cycle path along the Bigge upstream to Saßmicke. Here, the A45 is crossed twice to continue following the cycle path to Gerlingen. In Gerlingen we come to Bahnhofstraße. We follow this to the left until the traffic signal intersection, then turn right for about 300 m on the L512 towards Rothemühle. Immediately before the highway bridge, we sharp right and continue on the cycle path to the pedestrian signal. After crossing the L512 we follow the cycle path past Wendenerhütte over Vahlberg to Ottfingen. In Ottfingen, we first follow the Baustraße and then upward along Von-Galen-Straße until we turn left into Wilhelm-Tell-Straße. We follow it to a large forest, behind which we follow the path down to the L512. After crossing, we ride on lonely forest paths, passing by the Olpe-Siegen golf facility, until we reach the "Street of Work" marked with "W". We continue on over Römershagen, Trömbach to the village of Hardt. In the village center we turn sharply left and take a shortcut (nice trail) down to the L342. After crossing, we follow the hiking path A3 (steep ascent) up to Borner and further along the X12 hiking trail over Euel back to the start.