Rennsteig

Rennsteig is a long-distance ridge walk and historic boundary path in Central Germany, running through the Thuringian Forest, Thuringian Slate Mountains, and Franconian Forest. The through-route length is about 170 km, typically done in multi-day stages.

The classic walk runs from Hörschel (on the Werra) to Blankenstein (on the Saale/Selbitz). The route stays mostly along the ridge, with elevations generally ranging from around 196 m at Hörschel up to about 970 m on the high points, then descending toward Blankenstein.

Wayfinding is a defining part of the hike: the trail is marked with a distinctive white “R” (called Mareile). That marking is designed for long stretches, and it’s used to keep you on the ridge line from start to finish.

The Rennsteig is closely tied to history along the ridge: it functioned as a border path in the Middle Ages and still shows that heritage through large numbers of historic boundary stones along the route (about 1,300).

Along the trail you can expect small open shelters spaced regularly (reported roughly every 5–10 km), which supports stage-based hiking. The route also crosses/relates to water systems that form a watershed between major river systems meeting at Dreistromstein near Siegmundsburg.

For planning, treat it as a sustained long-distance effort rather than a single-day hike: it’s commonly split into 6 stages, and the total elevation gain is on the order of ~3,000 m across the full length.

The trail has a strong tradition beyond casual walking: it has been used for an annual ultramarathon/“Runst” event (GutsMuths Rennsteig Run) since 1973, and it was reopened officially on 28 April 1990 after being repeatedly cut off during the inner German border period.

More information: Wikipedia, Rennsteig – Thruhikers: Renee and Tim, Rennsteig Trail | Eurohike Hiking Holiday