The First 70.3

Train for your first middle-distance triathlon with a plan built around more than simply accumulating miles.

The First 70.3 is a practical, evidence-informed guide to preparing for the 1.2-mile swim, 56-mile bike, and 13.1-mile run using a progressive 16-week training system.

The plan begins with shorter, faster intervals to develop speed and economy, then gradually progresses toward longer tempo, threshold, and race-specific efforts as race day approaches. Throughout the build, endurance, strength, recovery, fueling, and technical skills remain part of the system.

Inside you'll learn how to:

• Follow a complete 16-week swim, bike, run, brick, and strength program
• Progress from short intervals to sustained tempo and threshold work
• Match your training to the elevation, terrain, weather, and technical demands of your race course
• Build bike fitness without sacrificing the half-marathon
• Practice race-day fueling and hydration before race week
• Use strength, stability, mobility, and recovery work to support durability
• Develop pacing, transition, equipment, and race-execution systems
• Apply evidence-based sports psychology techniques including self-talk, reframing, imagery, and process goals
• Understand the advantages and limitations of self-coaching, human coaching, and AI-based training tools
• Adjust training when sleep, illness, soreness, travel, work, weather, or life changes the original plan

This is not a collection of random workouts. It is a progressive training system designed to make race-day intensity increasingly familiar while preserving the consistency required to reach the start line healthy and prepared.

Consistency builds the fitness. Durability preserves it. Fueling makes it usable. Specificity makes it transferable. Patience lets you access it on race day.

Written for athletes preparing for their first middle-distance triathlon or those looking for a structured, practical approach to improving their next race.