Level 3: 8-Week 5K Training Plan This plan is for runners who want to train with purpose, push their limits, and run their strongest 5K yet. Whether you’re chasing a personal best or simply love the grind, this 8-week program blends threshold work, speed play, long runs, and strength training for a full-spectrum performance boost. You’ll kick things off with a 40-minute run, a mile time trial, and threshold intervals (4 x 5 min), alongside a 60-minute long run. From there, the work builds ...