The height difference between the back and front of the sole is 10 mm.

In order to run long distances and provide excellent comfort and performance, we have devoted special attention to the sole using 2 technologies: - K-Ring: ring located in the heel to improve cushioning at the rear and spread the shockwave in order to effectively protect the body (joints, back, knees, etc.). - Kalensole: improves cushioning by 34% and energy response by 25% when compared with conventional foam and lasts up to 1,000 km.

A stable shoe that facilitates the roll-through of the foot and reduces the effort needed to control the foot and the heel for a more relaxed foot motion. We have increased the surface supporting the foot and added reinforcement at the back of the heel.

In order to run regularly over long distances, foot comfort is of utmost importance. We have therefore sought to improve the level of comfort with the following: - a new collar at the rear of the sockliner holds the heel securely in place in the shoe so that it feels extremely snug. - a preformed sole made of open-cell PU (polyurethane) foam. - a reworked forefoot area for more comfort. - a seamless, single piece of fabric to reduce friction.

Thanks to the exclusive K-ONLY technology and denser foam located under the first metatarsal, you no longer need to know your stride type (over-pronator, under-pronator, neutral)! A 6-month study conducted with the Luxembourg Institute of Health* showed that the K-Only concept suits all strides. The key figures of the study: - 372 runners - over 12,558 training sessions - 12,094 hours of exercise - 116,723 km covered

Our sole is designed like a car tyre for running performance without losing control in wet conditions. The new geometry of the sole combined with a new rubber component provides the KIPRUN KS LIGHT with excellent grip on wet terrain, even at top speed.

In 2020, we have improved the KIPRUN FAST 2 thanks to your feedback over the last 2 years: - the forefoot has been improved for more comfort in the arch - new rubber on the outer sole to improve grip by over 37%

The Kiprun LONG 2 is the product of Decathlon's footwear expertise gained over 10 years. Caroline and Pierre-Emmanuel (product managers), Stéphane (project engineer) and Nicolas (designer), who are running enthusiasts, develop your Kiprun shoes with the help of a network of ambassadors: the runners at Decathlon, sports coaches and you! We choose the components, create the prototypes, then test and validate the products with laboratory and field tests.