Why Irohazaka Is One of the Most Requested Assetto Corsa Touge Mods Among the hundreds of community-made touge mods available for Assetto Corsa, Irohazaka stands in a league of its own. The road's extreme design—48 hairpin turns divided across two one-way routes stacked on a mountain in Nikko, Tochigi Prefecture—creates a driving experience that no other track can replicate. For sim racers hungry for technical, white-knuckle downhill runs, Irohazaka delivers something that even Akina (Mount Haruna) and Akagi mods cannot match: relentless, sequential switchbacks with virtually no straights, sheer cliffside elevation drops, and a layout that punishes the smallest mistake. The popularity of the Irohazaka Assetto Corsa mod reflects a broader trend in the sim-racing community. Enthusiasts are no longer satisfied with fictional circuits or sanitized versions of real roads. They want to experience authentic Japanese mountain passes—the same roads immortalized in Initial D, Best Motoring, and countless midnight touge videos. Irohazaka, with its reputation as one of the most challenging public roads in all of Japan, is the ultimate expression of that desire. The Irohazaka Assetto Corsa Mod: What You Get Route Layout and Accuracy The most widely used Irohazaka mod for Assetto Corsa recreates both the First Irohazaka (downhill only, 28 curves) and the Second Irohazaka (uphill only, 20 curves). In real life, these two routes form a one-way loop system—you ascend via the Second Irohazaka and descend via the First. The mod faithfully mirrors this separation, allowing players to choose which direction they want to tackle. The elevation data is based on ...