The first documented deaths of competitive cyclists during competition or training date to the 1890s and early 1900s when the recently invented safety bicycle made cycling more popular, both as a sport and as a mode of transport. The athletes listed here were either professional cyclists, professional pacemakers or well-known competitive amateurs who had a cycling-related death, mostly during a race or during training. Pacemakers are motorcyclists utilized in motor-paced racing, riding motorcycles in front of their cycling teammates to provide additional speed to those cyclists via the resulting slipstream.