Training science, AI coaching insights, and marathon strategy — written for runners who want to understand the why behind their plan.
A deep look at PacecraftAI, Runna, TrainAsONE, HumanGO, and Nike Run Club — what each does, its real limits, and which features actually matter for marathon runners.
ChatGPT can write a training plan. PacecraftAI adapts it every week based on your actual runs. The honest difference between generic AI and purpose-built marathon coaching AI.
Generic 16-week plans don't adapt when life happens. We break down what AI marathon coaching actually does differently — and when a human coach still beats it.
We tested TrainAsONE, Runna, HumanGO, RunV, Coopah, and PacecraftAI. Here is what each does well and where each falls short.
If you're balancing work, family, and marathon training, an AI-assisted coach might be the unlock you've been looking for. Here's how to make it work.
What's happening under the hood when an AI builds your marathon plan? We explain ATL, CTL, TSB, and why adaptive periodisation beats fixed schedules.
Overtraining injuries follow predictable patterns. AI coaches that monitor training load, recovery, and heart rate trends can flag risk weeks before you feel pain.
A human coach watches you move and reads between the lines. An AI coach is available at 3am and costs $6/month. When does each make sense?
PacecraftAI is now available as a Telegram bot — get personalised marathon coaching, training advice, and run analysis without opening an app.
We tested the top AI running apps — PacecraftAI, Runna, Nike Run Club, AI Endurance, and Humango — on coaching quality, injury monitoring, and value. The honest ranking.
The Acute:Chronic Workload Ratio is the most important number in marathon training you have never heard of. Here is what it is, why it predicts injuries, and how to use it.
Taper madness, heavy legs, phantom injuries — the marathon taper is confusing. Here is what is actually happening in your body and exactly how to handle it.
Shin splints during a marathon training block do not have to mean a DNS. How to manage the injury, maintain fitness, and return in time for your race.
Breaking 4 hours requires 5:41/km. These are the specific training sessions — tempo runs, long runs, and marathon-pace workouts — that make it possible.
Running a marathon over 50 requires different training than at 35 — more recovery, smarter load management, and a plan that adapts to masters physiology.
Never run a 5K before? This beginner plan uses run/walk intervals to get you across the finish line in 6–8 weeks — no prior fitness required.
A structured 8-week 5K plan with week-by-week workouts, pacing guidance, and race day strategy. Takes you from run/walk intervals to running 30 minutes continuously.
Already running 5K? This beginner half marathon guide covers the training load step-up, the long run progression, and what first-timers need to know about pacing 21km.
A complete 12-week half marathon plan with long run progression, session types, training load guidance, taper strategy, and race day pacing. Built for 5K runners stepping up.
Confused about heart rate zones? Here is a plain-English guide to what each zone means, why Zone 2 matters most, and how to find your own numbers.