Race Ready for the Rockford Half Distance Triathlon - This 36-week training plan is built specifically for experienced senior triathletes who want to improve performance while staying healthy, balanced, and energized. From the 1.2-mile downriver swim in the Rock River to the rolling 56-mile bike course and scenic 13.1-mile run along the city’s greenways, this plan prepares you for every challenge Rockford offers. Whether you're returning from a break or starting anew, this plan begins with a ...