Maffetone Method (MAF Low-Heart-Rate Training)
Methodology 8 of 16
Key Highlights
- •Find your heart rate limit by subtracting your age from 180.
- •Always stay at or below that number while you are exercising.
- •It teaches your body to burn fat for energy instead of sugar.
- •This method keeps you safe from getting hurt or feeling worn out.
- •Most of your workouts will feel very slow and easy.
- •It builds a strong base so you can eventually go much faster.
Overview
The MAF method, developed by Dr. Phil Maffetone, is a heart-rate–guided training approach that keeps intensity strictly aerobic. MAF stands for "Maximum Aerobic Function." The method uses a simple formula (180 minus age) to determine an individual's maximum aerobic heart rate, and all runs or rides are kept at or below this heart rate. By doing so, training stays in a low-intensity zone (often corresponding to Zone 2) for an extended period, sometimes months, before any higher-intensity work is introduced.
Key Focus
Maximize aerobic adaptations and fat metabolism while minimizing stress. The goal is to "keep easy runs truly easy", training the body to use fat as fuel and build a deep aerobic base. This method aims to improve endurance capacity (and even health markers) without the inflammatory stress of hard workouts. Over time, an athlete should see their pace at the same low heart rate improve – indicating better aerobic efficiency.
Best Suited For
Athletes in base phases, those prone to injury or burnout, and beginners who need to build endurance safely. It's popular among long-distance triathletes and ultrarunners as well. Because it requires running very slowly (or even walking on hills) at first, it can be mentally challenging, but it's effective for athletes who historically train too hard on easy days. It's also used as a recovery-focused approach for overtrained athletes to reset their aerobic system. (That said, athletes with a well-developed base may find pure MAF training limiting if no faster work is ever added.)
Ready to train with Maffetone?
Create a personalized training plan that incorporates this methodology based on your goals, experience level, and available time.
Create Your PlanTry These Training Plan Builders
Marathon Training Plan Builder
Build a personalized, science-backed marathon training plan in minutes. Coaching that adapts to your schedule, experience & race-day goals.
Half Marathon Training Plan Builder
Build a personalized half marathon training plan. Structured phases, weekly mileage targets & race-day preparation for your 13.1-mile goal.
Triathlon Training Plan Builder
Build a personalized triathlon training plan that balances swim, bike & run. Phased periodization for sprint, Olympic, 70.3 or full-distance races.
Ironman Training Plan Builder
Build a personalized Ironman 140.6 training plan. Structured periodization for the swim, bike & run volume needed to cross the finish line.
Explore More Methodologies
Block Periodization
The focus is to concentrate training stress on one adaptation while maintaining others at minimal levels, thereby inducing greater improvement in that area than if all qualities are trained simultaneously. For instance, in an accumulation block an athlete might focus on high-volume low-intensity work to boost aerobic base, then in the next (transmutation) block focus intensely on lactate threshold or anaerobic capacity with many interval sessions. Because each block is short and specific, the body is continuously challenged with a new stimulus every few weeks, helping to avoid stagnation. Block periodization thus aims to combine the advantages of both polarized approaches and pyramidal approaches by sequencing them in time – research suggests a dynamic, phased combination can be very effective.
Fartlek Training
The focus of fartlek is to improve both aerobic endurance and speed endurance by blending intensities in one session. Hard segments (e.g. around 85–90% effort) push the aerobic system and improve the ability to surge, while the easy segments (jog or float recoveries) allow partial recovery and adaptation to changing paces. This trains the body and mind to handle pace fluctuations – useful for tactics like surge-and-recover in races – and can help an athlete finish strong with a fast end spurt. Additionally, the varied nature of fartlek can reduce monotony and improve overall fitness similarly to structured intervals, but with more flexibility.
Galloway Run-Walk Method
Build endurance and minimize fatigue/injury by using walking intervals as a form of active recovery. The goal is to prevent the cumulative fatigue that normally occurs in continuous running, thus allowing the athlete to maintain a stronger pace over the long haul. Walking breaks allow the muscles, joints, and energy systems brief recovery, which reduces muscle damage and "erases" some fatigue so the runner can keep going longer. The approach also aims to lower the stress hormone response (cortisol) and impact forces, thereby lowering injury risk. In essence, the focus is conservation of resources: by never going until complete exhaustion, you preserve your ability to continue and enjoy the endorphins of running without the deep aches of nonstop running. This method also has a psychological goal – breaking a marathon or long run into manageable segments (run a few minutes, then you know a walk is coming) can make the distance mentally easier.
Hansons Marathon Method (Cumulative Fatigue Training)
Develop fatigue resistance and the ability to maintain pace in the later miles of the marathon. The key goal is to adapt the body and mind to running strong even when legs are already fatigued. By spreading out the weekly mileage and not relying on a single massive long run, the Hansons method avoids overemphasizing any one workout. Instead, the entire week’s training load collectively simulates marathon stress. Another focus is consistency and relatively high mileage (for amateurs) – running six days a week builds cumulative endurance. The method also aims to improve specific marathon physiology with weekly tempo runs at goal marathon pace, so an athlete gets very familiar with their target pace. In summary, the Hansons approach focuses on making the marathon “the sum of its parts,” preparing an athlete through cumulative fatigue rather than one huge long run, ultimately to avoid the infamous late-race breakdown.