I am planning to run the ultra but am not sure I can finish in under 12 hours. Can I still run the mOUnTaiNBACK?

The mOUnTaiNBACK is not an easy ultra course. This is why ultra participants are required to provide information on successfully completed marathons or ultras, and relay teams of two are required to provide information on successfully completed half-marathons or marathons. For safety reasons, the course start and closing times were designed to utilize the best daylight running hours at this time of year. Those who think they may need longer than 12 hours to complete the course should carefully consider whether they are prepared to tackle the mOUnTaiNBACK. We cannot be responsible for runners who are on the course after the course closing time. Occasionally we have permitted runners to start early. In this situation, you will have full responsibility for your safety and any needed supplies until you reach an open aid station.