The Frühlingsultra - Freudenstadt-Grüntal is a 50 km spring ultramarathon held in Freudenstadt-Grüntal, located in Germany's Baden-Württemberg region. The race begins and concludes at Haldenstraße 10, employing a four-lap circuit instead of a linear course. Each lap spans 12.5 km, allowing participants to reach the same aid station multiple times throughout the event.
The route crosses field and forest trails and features moderate inclines, with direction markers indicating the path. A single overall classification is maintained, without age-group standings or a time limit, contributing to the event's relaxed, participant-focused atmosphere. The organization is straightforward: the Grüntal-Wittlensweiler train station serves as the public transport link, registration is available via email, on-site entries are accepted on race day, and the entry fee covers aid, a certificate, a breakfast buffet, hot meals from noon, and complimentary beverages.