The Puerto Rico Half Distance Triathlon features a warm open-water swim, a scenic yet hilly bike course, and a historic, undulating run through Old San Juan. This plan is designed to meet those exact demands: 🧱 12-Week Foundation Phase Builds essential endurance from the ground up — perfect if you’re starting your season or returning from time off. Early strength training and technique work help prepare for the physical demands of the hilly run and bike segments of the Puerto Rico course. ...