4.5
(288)
8,384
runners
449
runs
Jogging routes around Flachsee offer diverse landscapes within an expansive nature reserve in the Aargau region of Switzerland. The area, formed by an artificial lake on the Reuss river, features extensive marshlands, former river meanders, and varied terrains including forest paths and routes along the lake. Paths are generally accessible, providing options for different skill levels, with panoramic views that can extend from the Alps to the Jura mountains.
Last updated: May 15, 2026
4.4
(5)
166
runners
13.8km
01:32
90m
90m
Moderate run. Good fitness required. Mostly paved surfaces. Suitable for all skill levels.
4.7
(6)
154
runners
Moderate run. Good fitness required. Mostly paved surfaces. Suitable for all skill levels.

Sign up for free
70
runners
14.4km
01:30
30m
30m
Moderate run. Good fitness required. Mostly paved surfaces. Suitable for all skill levels.
31
runners
8.05km
00:53
40m
40m
Moderate run. Good fitness required. Mostly paved surfaces. Suitable for all skill levels.
6
runners
4.68km
00:29
10m
10m
Easy run. Great for any fitness level. Mostly paved surfaces. Suitable for all skill levels.
Get access to more routes and recommendations from other explorers.
Sign up for free
Already have an account?
Our route recommendations are based on thousands of hikes, rides, and runs completed by other people on komoot.
Start today with a free account
Your next adventure awaits.
Login or Signup
Yesterday, through a highly magnified pair of binoculars on one of these islands, I was able to observe five cormorants in close harmony: Magnificent! The birdlife here is truly diverse - a magnifying glass is actually a must. But the photos stored here by Komoot users are also great in this highlight - especially the photo of the kingfisher, which I unfortunately haven't had the chance to see yet...
0
0
Very exciting! Very informative!
0
0
Very exciting and informative!
0
0
Kloster Hermetschwil Kloster Hermetschwil Infos Facts Map The Benedictine convent of St. Martin is located in Freiamt. Founded in 1082, the monastery complex is one of the most impressive cultural sites in the region.
2
0
A constant view of Bremgarten's old town. Simply beautiful.
0
0
The Flachsee area offers a diverse range of terrains, including extensive marshlands, former river meanders, and varied paths through forests and along the lake. While generally flat, this variety keeps runs interesting, providing different environments for joggers.
Yes, there are routes suitable for all skill levels. For an easier option, consider the Rottenschwil Bridge loop from Unterlunkhofen, which is just under 3 miles (4.7 km) with minimal elevation gain, making it perfect for a relaxed run.
Flachsee is a rich nature reserve known for its extensive marshlands, backwaters, and small islands. You can observe a wide variety of bird species, including cormorants and kingfishers, and even beavers. The Birdwatching Hide at Flachsee Waterbird Reserve is a popular spot. You might also encounter the Flachsee and the Water Buffalo, or see the historic Old Iron Bridge over the Reuss River.
Many of the running paths around Flachsee are designed as loops, offering convenient circular routes. A popular option is the Flachsee loop from Unterlunkhofen, which is about 5 miles (8.1 km) and takes you through the nature reserve around the lake.
Flachsee offers year-round appeal for jogging. The opportunity to observe diverse birdlife, including colonies of greylag geese, is present throughout the year. The natural harmony and scenic views are enjoyable in all seasons, though spring and autumn often provide particularly pleasant temperatures and vibrant landscapes.
Yes, Flachsee is generally well-connected. Public transport options are available to reach the area, making it convenient for runners who prefer not to drive. You can plan your journey using local public transport services to reach starting points like Unterlunkhofen.
The paths around Flachsee are generally easily accessible and suitable for various skill levels, making them a good choice for families. The tranquil natural environment, combined with opportunities for birdwatching and observing wildlife, can make for an engaging outing for children. Shorter, easier loops are recommended for families.
Flachsee is a significant nature reserve, and specific rules apply to protect its rich biodiversity. While dogs are generally welcome, it is crucial to keep them on a leash at all times, especially in sensitive areas like marshlands and near bird breeding grounds, to avoid disturbing wildlife.
There are parking facilities available near the main access points to the Flachsee nature reserve, particularly around villages like Unterlunkhofen. These spots provide convenient starting points for many of the running routes.
The running routes in Flachsee are highly rated by the komoot community, with an average score of 4.5 stars from over 280 reviews. Runners often praise the tranquil and natural environment, the diverse landscapes, and the well-maintained paths that offer magnificent views extending from the Alps to the Jura mountains.
Absolutely. For those looking for a longer challenge, the Domililochsteg Bridge – Flachsee loop from Unterlunkhofen is a popular choice, covering about 8.5 miles (13.8 km). Another excellent option is the Stork Nests in Aargau – An Der Rüüs loop from Unterlunkhofen, which is about 9 miles (14.5 km) and follows the Reuss river, passing by stork nesting sites.
While the immediate nature reserve focuses on preserving its natural state, nearby villages such as Bremgarten offer a selection of cafes, pubs, and restaurants. The historic Old Town of Bremgarten is mentioned as being worth a visit for cultural enrichment and amenities after your run.


Browse the best Running Trails & Routes in other regions.