What is Arrowhead Endurance?

Arrowhead Endurance is a training system that:

1. Prioritizes goal pace, not physiological thresholds:
   Training should be designed around the demands of the goal event, not random effort or generic benchmarks;
2. Develops goal pace from four dimensions, not just two:
   Goal pace is built using strength, speed, duration, and execution, not just "volume and intensity;" and
3. Uses converging periodization, not linear:
   With goal pace as the priority, training starts at the extremes of each dimension and gradually works toward the specific demands of the event.

Traditional training methods commonly use linear periodization: training starts long and easy and progressively gets shorter and harder.

Arrowhead Endurance uses converging periodization: linear periodization is still used for the duration side of intensity, but it's complemented with reverse periodization for both speed and strength.

While duration is still developed in a traditional way, speed and strength are developed alongside it, but by starting at the extremes of maximum strength and maximum speed. Then all three progress toward goal pace.