Lennart Heilmann plays beach volleyball for MTV München and competes in the federation “Bayerischer Volleyball-Verband”.
Currently listed in BVV U18 Herren 2026 (rank 69, 198 points); BVV U17 Herren 2025 (rank 32, 360 points); BVV U19 Herren 2026 (rank 94, 198 points). Ranking seasons: 2025–2026.