"THE E4 RECORD" - A running journey through one of the hardest touristic routes on the Balkans
E4 is one of the hardest touristic routes on the Balkans with it's 240km and 13500 D+. Kaloyan Peychev Kofe made a successful FKT attempt. Usually it takes 2 weeks to hike E4 but Kofe completed the route in 51h08min.
https://fastestknowntime.com/route/e4-bulgaria-vitosha-verila-rila-pirin-slavyanka
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