In marathon running, the myth is that it is all about the athlete. The truth is more interesting. The four great stages of this popular test of endurance – London, Berlin, Chicago and New York – each present participants with their specific challenge through surface, gradient and rhythm, and modern technology in footwear and apparel is increasingly designed to meet those specifics. Performance, in other words, is a negotiation between physiology and the environment.
Berlin remains the most-world record friendly because everything there is engineered for continuity. The course is flat, the camber is gentle, the asphalt is consistent, and the turns are forgiving. That stability is gold for today’s racing shoes, whose plates and foams deliver their best returns when ground interaction doesn’t change underfoot. Berlin hands athletes the luxury of running in a straight line, biomechanically and psychologically. For the marathon data-fixated, the sport’s fastest points cluster there.
Chicago is also rapid, but with more surface texture. Its presents just enough variety to demand micro-adjustments in loading, and the city’s grid exposes athletes to subtle shifts in wind and shade. Those in the know recommend to “go early” on the course, but what separates a good day from a great one is often comfort management; aerodynamic fabrics, the thermoregulation, and the ability to keep mechanically tidy when the asphalt refuses to be entirely uniform.
London sits somewhere in the middle. Its early miles are quick and clean while later ones are shaped by long straights and gentle rises that quietly tax the legs. The course is fast but not frictionless. This is where tech-led apparel earns real value: shoes that retain stability deep into fatigue, fabrics that reduce heat stress, uppers that hold the foot without over-correcting stride. London rewards those who can stay organized when form wants to unravel.
And then there is New York, the least predictable of the four. It’s bridges, inclines and harsher surfaces offer their own challenges, but the crunch is a layout that refuses to let athletes fall into rhythm. It tests resilience more than pace. Technology still helps, but the emphasis shifts from bounce to control: footwear that keeps athletes centred, fabrics that adapt to changing microclimates, and apparel systems that prevent athletes from haemorrhaging energy long before Central Park.
What the Big Four demonstrate is that endurance running has entered a genuinely technical era. Surfaces, gradients and materials shape outcomes just as much as tactics. If the course is the song, but increasingly the tools athletes bring with them…shoes, fabrics, and data…determine how it’s sung.









