Swix Marathon Powder Black 25 g is a high‑performance glide wax powder tailored for endurance events, marathon races, and extended training sessions where snow conditions are variable and often contaminated or wet. Its hard powder formula provides excellent durability, reducing the need for frequent rewaxing along lengthy courses.

The black additive is engineered to minimize friction from dirt and particle contamination, helping prevent base buildup and improving glide on challenging snow surfaces. This makes the wax ideal for warmer, wet snow and conditions where snow quality may be compromised.

This powder can be used on its own as a race wax to achieve efficient glide or as a durable base layer under additional top coats for enhanced performance. For best application results, use a high‑quality waxing iron at a minimum temperature of 155 °C (311 °F), moving the iron about 8–10 seconds per ski. After cooling to room temperature (~10 minutes), reheating can increase durability, followed by scraping after approximately one minute.