Karuizawa Half Marathon

The Karuizawa Half Marathon offers runners a breathtaking journey through the picturesque mountain resort town of Karuizawa in Nagano Prefecture, Japan. This challenging course winds through lush forests, past historic landmarks, and along scenic mountain roads, providing a perfect blend of natural beauty and cultural richness. With its cool climate and stunning autumn foliage, the race typically takes place in October, attracting both local and international runners. Participants can expect excellent organization, enthusiastic local support, and the opportunity to experience the unique charm of this popular Japanese retreat, making it a memorable run for both seasoned athletes and first-time half marathoners.