Leonhard Guthmann plays beach volleyball and competes in the federation “Nordwestdeutscher Volleyball-Verband”.
Currently listed in NWVV U13 männlich 2026 (rank 77, 6 points); NWVV U14 männlich 2026 (rank 118, 3 points). 1 tournament result is documented from 2025. Most recently documented: place 13 at Sonstige (Jun 21, 2025). Most frequent partners in the results: Jakob Hagener.