How signing up for a half marathon in Dresden paved the way for an unexpected travel adventure When I registered to run the Dresden half marathon back in the summer, I hadn’t imagined that getting to the starting line would turn into my biggest challenge. I was more worried about whether my knees could handle the 26-kilometer distance. A year ago, I had undergone a tibial tuberosity transfer (TTT) to repair a knee problem that had bothered me for 20…