The idea is to connect the lowest place in Slovenia with the highest point, all self powered. The high point is Triglav (2864m), and the lowest is so-called "Underwater Triglav", at 38m below sea level and 350m from shore. The idea is to swim down to Underwater Triglav, swim to shore, bike ~210 km to the Triglav National Park, and then climb the mountain (10km). One-way time starts at Underwater Triglav and ends at the summit.
Triglav ascent: https://www.strava.com/routes/22708141