Trailrun Someren is an off-road running event held in Someren, Netherlands. It offers a 4 km distance, a 10 km race, and a half marathon. Taking place in November, the event maintains a limited field with a maximum of 500 participants. The 4 km distance is suitable for younger runners from age six, while the 10 km and 21.1 km races are open to participants aged 16 and older.
The route crosses the De Heihorsten nature reserve, avoiding flat road circuits. Participants will encounter sandy terrain, undulating paths, forest trails, and open heathland areas, including fens like the Keelven. Scottish Highland cattle might be seen grazing in the vicinity. JOEK organizes the event, which provides essential amenities such as changing rooms, first aid, secure bag storage, parking, and options for late registration.