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May and September 2023 - Sandanski/Pirin-Gebirge - 4 Termine
2020-11-02 - Bulgarian Cycling Tour: Discover new territory with Olaf Ludwig
https://www.radsport-news.com/markt/marktnews_122462.htm
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(German)
On the road with a champion
2013-03-22 - With Olaf Ludwig on a bike tour in Bulgaria
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(German)
