https://andreasritter.ch/ 2026-11-15 https://andreasritter.ch/assets/img/andreas-ritter-1200x1200.jpg Dr. Andreas Ritter climbing towards the Furka Pass, Alpenbrevet 2024 https://andreasritter.ch/og.jpg Dr. Andreas Ritter on a road bike in the Swiss Alps, Alpenbrevet 2024 https://andreasritter.ch/assets/img/alpenbrevet2-1440.fa815f581d.webp Dr. Andreas Ritter climbing towards the Furka Pass, Alpenbrevet 2024 https://andreasritter.ch/assets/img/alpenbrevet1-1440.b121f3d5bb.webp Dr. Andreas Ritter near the top of the Nufenen Pass, Alpenbrevet 2024 https://andreasritter.ch/telemetry 2026-11-15