Timeline
Donau Tour 49 Zugabe: Auf der Spur des versickerten Donauwassers - Aachtopf
Mit Zug und Bus von Donaueschingen zur Aachquelle - dort eine kleine Wanderung rund um den Aachtopf
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Donau Tour 48 Tuttlingen->Donaueschingen
Donauversickerung zwischen Immendingen und Möhringen, zu Fuß im trockenen Flussbett, kleine Wanderung zur Hauptversickerungsstelle. Durch die Baar durch die Felder. Gute Wegstrecke. Zieleinlauf am Zusammenfluss Brigach und Breg und an der Donauquelle!
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July 14, 2026
Today we are on the trail of the Danube Sinkhole. And: the last stage!
This river is simply mysterious. On the stretch between Immendingen and Möhringen, the Danube disappears into karst fissures and caves, and on 150 to 200 days a year, the riverbed is dry on this section. 3/4 of the water flows underground
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Donau Tour 47 Beuron->Tuttlingen Teil 2
Diese Tour besteht aus 2 Teilen, Komoot hat zwischendrin unterbrochen. Super Radweg ab Fridingen überwiegend nördlich der Donau. Breite flache Donauniederung mit Landwirtschaft. Kleine Runde durch Tuttlingen.
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July 13, 2026
Komoot ended the tour in the middle without asking, so there are 2 parts of a tour. Here is the 2nd part: after the Ziegelhütte, it continues on a bumpy asphalt path, but then from Fridingen the super Donauradweg (Danube Cycle Path) marked with a blue stripe and smooth asphalt begins, and finally you
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Donau Tour 47 Beuron->Tuttlingen Teil 1
Diese Tour besteht aus 2 Teilen, Komoot hat zwischendrin unterbrochen. Teil 1 südlich der Donau z. T. schlechte Wegstrecke auf Kies.
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July 13, 2026
After half of the tour, Komoot gave up today, which is why there are 2 parts to this tour.
After a three-hour hike, we get on our bikes again - unexpectedly, it's 32 degrees again. But we have to go to Tuttlingen. First of all, we have to push the bike up the hill in Beuron. The first third is not nice
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Donau Tour 47a Beuron Rundwanderung Eichfels-Irndorf-Rauher Stein
Wanderung erst auf dem Wildpfad, Aufstieg zum Eichfelsen, durch den Irndorfer Felsengarten zum Rauhen Stein, Abstieg nach Beuron
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July 11, 2026
It's going to be hot today. That's why we're starting our program early: first a hike, then we continue by bike on the Danube Cycle Path.
From Beuron, we hike over the old stone bridge, via the Wildpfad along the Danube and through rock tunnels. The ascent to the Eichfelsen luckily goes through the forest
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Donau Tour 46 Sigmaringen->Beuron
Einer der schönsten Abschnitte des Donauradwegs durch den zweiten kleineren Durchbruch im oberen Donautal. Hauptsächlich auf der südlichen Seite, aber es geht rüber und nüber. Viele Felsen, Burgen, Kapellen
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July 11, 2026
This section through the Obere Donau Nature Park is one of the most beautiful on the entire Danube Cycle Path.
It initially follows the renatured Danube.
Then the valley narrows, with steep cliffs on both sides.
After a considerable climb, we reach the first highlight, the former Inzigkofen monastery (today
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Donau Tour 45 Riedlingen->Sigmaringen über Heuneburg
Südliches Donauufer, dann zur nördlichen Seite auf die Schwäbische Alb hoch. Besichtigung Heuneburg zu Fuß. Steil zur Donau runter, südlich weiter bis Sigmaringen. Kleine Abendrunde in Sigmaringen zu Fuß
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July 9, 2026
On the Danube dike and through the fields in the Danube floodplain. Then it goes steeply uphill to the edge of the Swabian Jura. There lies the reconstructed Heuneburg, the former Celtic city of Pyrene, the oldest city north of the Alps. At its peak, the Celtic trading center had about 5000 inhabitants
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Donau Tour 44 Ehingen->Riedlingen
Durch die weite Donauniederung mit vielen Schleifen, hügelauf/hügelab am Rand der Schwäbischen Alb bei starkem Wind.
Anschließend in Riedlingen Stadtrundgang zu Fuß.
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July 8, 2026
A rather strenuous tour due to a lot of uphill/downhill. But much worse was the wind at 50-70 km/h, which absolutely had to blow against us from the front. With the strong gusts, I sometimes couldn't move forward at all. The Danube here is often renaturalized and a new habitat.
A nice spot along the way
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Donau Tour 43 Ulm->Ehingen
Wechsel nördlich südlich nördlich südlich der Donau, anfangs viel Auenwald, Naturschutzgebiete, viel Wasser. Durch die Felder. In Ehingen Stadtrundgang zu Fuß
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July 7, 2026
Right along the Danube through floodplain forest and riverside forest, past the mouth of the Iller. More often now there are islands in the river or a power plant canal and a second river arm. Particularly beautiful is the stretch through the Gronne and Lichternsee nature reserves with lots of wild landscape
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Donau Tour 42a Sidestep Blaubeuren und Blautopf
Einmal den Blautopf sehen - Rundgang durch den Ort zum Kloster und zum Blautopf, eine Karstquelle am Südrand der Schwäbischen Alb
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July 5, 2026
I had wanted to see the Blautopf for ages, and now we are so close. We had to make a trip there. We travel by train from Ulm to Blaubeuren. A short walk through the medieval town leads us past historic houses and the monastery complex. Unfortunately, there is construction work around the monastery and
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Donau Tour 42 Günzburg->Ulm
Viel am Nordufer der Donau entlang, viele Seen, auch zum Baden. Abstecher zu Fuß in Elchingen zum Kloster auf einem Berg wegen der Aussicht. Schwierige Einfahrt nach Ulm, die Stadt ist eine einzige Baustelle.
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July 4, 2026
From Günzburg's beautiful market square, we go through the Unteres Tor out of the city and over the Danube bridge.
The first third is on a well-drivable gravel path along the Danube on a former towpath through floodplain forest, first through the Nauwald, then through the Weissinger Hölzle with many butterflies
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Donau Tour 41 Dillingen->Günzburg
Am Nordufer durch Auenwald und an vielen Seen entlang. Bei Offingen Wechsel auf die Südseite, danach hoch auf die Schwäbische Alb und wieder ein Stück runter nach Günzburg. Da machen wir noch einen Stadtrundgang, besonders beeindruckend die Liebfrauenkirche.
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July 3, 2026
A long stretch beautifully through the Auenwald. Short loop through Lauingen with town hall and Schimmelturm.
In Gundelfingen we drove a bit foolishly and unfortunately missed out on seeing anything of the town.
A whole series of green lakes lines the following route, surely formed from old Danube arms
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Donau Tour 40 Donauwörth->Dillingen
Durch das Donauried, erst am nördlichen, dann am südlichen, dann wieder am nördlichen Ufer geradelt Stadtrundgang in Dillingen
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July 2, 2026
After the nightly thunderstorm, it is still raining. We are waiting until the weather looks good. It is also a bit cooler now.
Leaving Donauwörth, we pass the Airbus helicopter factory. Then along the Kessel river, which flows into the Danube near Donauwörth.
A stretch of floodplain forest, then across
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Donau Tour 39 Neuburg->Donauwörth
Auf der nördlichen Seite an der Donau entlang, Renaturierung und neugeschaffene Flutpolder, besonders bei Riedelsheim, später etwas hügelig über die Dörfer. Stadtrundgang zu Fuß in Donauwörth.
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July 1, 2026
Initially, the temperature is quite okay. The path leads close along the Danube through a lonely, very beautiful area where new floodplains have been created and vibrant biotopes have emerged. The Riedelsheim flood polder is intended to protect against high water in the future. The further part is characterized
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Donau Tour 38 Ingolstadt->Neuburg
Ca 24 km mit dem Rad eher donaufern, der Rest Stadtrundgang in Neuburg zu Fuß
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June 30, 2026
After yesterday's thunderstorm, it is still raining or drizzling. We are waiting for better weather, but it is not coming, so we set off in a light rain after all. It is also a bit cooler, so you don't immediately overheat in your rain jacket. It soon stops raining and in the sun it becomes muggy again
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July 18, 2026
One last thing was still open: where does the seeped Danube water flow that no longer appears in the Danube?
So we travel by train and bus to Aach, to the Aachtopf, the largest spring in Germany and the source of the Hegauer Aach.
The Aachtopf is predominantly (approx. 3/4) fed by Danube water, which
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