After the Kassel Marathon: The Rhine and Cologne
The Route: Kassel-Wilhelmshöhe → Cologne → Rhine Valley (Koblenz/Bonn) Logistics: High-speed rail west, either direct or via a Frankfurt change, followed by regional rail further along the Rhine. Marathon Month: September Duration: 4 nights
Kassel-Wilhelmshöhe ──(ICE, ~2.5-3.5 hrs)──> Cologne ──(regional rail, ~1 hr)──> Rhine Valley
Four nights turns a Kassel Marathon trip into a proper journey west, from the practical, rail-hub character of Kassel into Cologne's cathedral skyline and on into the Rhine's castle-topped valley towns. The distance involved makes this the longest of the excursions on this list, so the first day is best kept deliberately light: a rail journey and an easy evening in Cologne, saving the valley's walking for the days that follow once legs have properly settled from the marathon.
September along the Rhine sits within the region's main autumn wine season, vineyard terraces along the valley slopes beginning to turn, with generally mild, settled weather for both city walking and any riverside time in the valley towns.
Nights One and Two: Cologne
Cologne Cathedral, its twin spires visible from much of the city and directly beside the Hauptbahnhof, is the obvious starting point and worth the short climb to its viewing platform on a second day once legs are ready for stairs rather than immediately after arrival. The old town below spreads along the Rhine's western bank, its narrow lanes and riverside promenade offering flat, easy walking for the first evening.
The Museum Ludwig, beside the cathedral, holds a substantial modern and contemporary art collection in level, easily navigated galleries, a sensible first-day museum choice given the lack of any real physical demand. A walk along the Rhine promenade itself, level throughout, gives good views back toward the cathedral and across to the Hohenzollern Bridge, its railings covered in thousands of padlocks left by visitors.
Where to stay: the Excelsior Hotel Ernst, directly opposite the cathedral, puts Cologne's centrepiece on the doorstep for two nights. The Ibis Styles Köln Zentrum offers a simpler, well-located alternative closer to the Hauptbahnhof.
Where to eat: a Cologne brewpub serving Kölsch, the city's own light, pale beer served in small glasses that are refilled without asking, alongside Himmel un Ääd (a regional dish of black pudding, apple sauce and mashed potato), gives a properly local first dinner.
Nights Three and Four: The Rhine Valley
A short regional train ride from Cologne reaches the Rhine's most scenic stretch, its steep, vineyard-terraced banks studded with medieval castles at almost every bend. Basing in either Koblenz, at the point where the Moselle meets the Rhine, or Bonn, Beethoven's birthplace and a more compact base, both give easy access to the valley's castle towns and viewpoints by regional rail without needing a car.
The valley's castles, Marksburg above Braubach and Rheinstein near Bingen among the most visited, generally require a genuine climb and a paid tour to see the interior, both worth treating as a deliberate outing rather than an add-on given the exertion involved. A gentler alternative is simply riding the regional train slowly along the valley itself, watching the castles pass by from a comfortable seat, a properly restful way to take in the scenery on tired legs.
Where to stay: the Mercure Hotel Koblenz City, close to the old town and station, suits a base in Koblenz well. In Bonn, the Hotel Königshof, on the Rhine with river views, offers a comfortable equivalent.
Where to eat: a Flammkuchen with a glass of local Riesling, in a restaurant along either town's riverside promenade, makes an easy, unhurried final dinner in keeping with the valley's wine-country setting.
Getting Home
Frankfurt Airport (FRA) is the most practical departure point from the Rhine Valley, reached from Koblenz or Bonn by direct or one-change ICE service in around 1 to 1.5 hours, offering considerably more international flight choice than Cologne Bonn Airport's smaller network.