Every running session built on purpose.

Learn to set intensity, duration, structure and progression — the four levers that decide what a session actually trains. For runners chasing a number, not a first finish line.

• Stop training grey — understand why easy days must stay easy and hard days must bite, and how to set intensity so there's no blur between the two
• Build any session from scratch — a four-dial framework that designs interval sessions targeting the exact adaptation you're chasing, no pace guesswork
• 4 ready-to-use workouts — hill reps, VO2 reps, threshold reps, and marathon reps, each with structure, purpose, and power targets included

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