Heidi Häfner plays beach volleyball for DJK Karbach and competes in the federation “Bayerischer Volleyball-Verband”.
Currently listed in BVV U18 Damen 2025 (rank 81, 311 points); BVV U18 Damen 2026 (rank 142, 128 points); BVV Damen 2026 (rank 423, 6 points). Ranking seasons: 2025–2026.