Frauenfeld railway station supports a regional train, part of the Zürich S-Bahn, from Weinfelden to Winterthur (S8 and S30) every 30 minutes, as well in the opposite direction and a fast train (InterCity and InterRegio) that travels to Zurich every 30 minutes, as well in the opposite direction to Weinfelden and further to Constance in Germany or Romanshorn.
Konstanz station is served by the Upper Rhine Railway running west to Singen with connections to all parts of Germany, and the Etzwilen–Konstanz line running south into Switzerland, connecting to major routes at Weinfelden.