MIO Olten Fair Olten
19. - 21. September 2025 | Trade and public fair with tradition and regional charm

The MIO – Messe in Olten is the largest and most established public trade fair in the canton of Solothurn. Since its founding in October 1946, it has taken place annually in September. The event is held in the centrally located Bifang district of Olten, where streets such as Bifangstrasse, Engelbergstrasse, and Aarauerstrasse transform into a vibrant hub of regional commerce and cultural exchange during the fair days. The fair is organized by the “Quartierverein rechtes Aareufer Olten” in cooperation with Kein Ding GmbH. The association's mission is to promote the public and cultural interests of the right bank of the Aare River—an aim that becomes visible and tangible through the MIO.
The MIO combines a traditional trade exhibition with a modern meeting place for the wider public. Its defining feature is its diversity: artisan businesses and technology service providers showcase their work side by side. Visitors gain a comprehensive insight into the regional variety of industries—ranging from electronics, vehicles, clothing, and construction materials to health and wellness products, local delicacies, and innovative energy solutions.
The fair offers something for the whole family and appeals to all age groups. Key thematic areas include building, renovation, and housing; energy, sustainability, and technology; health and quality of life; mobility and travel; finance and retirement planning; regional products and gastronomy; as well as education and careers. These topics form the foundation of the event and are complemented each year by a changing theme that adds a fresh focus. Despite its wide thematic scope, the character of the fair remains clearly defined: the MIO is a trade fair with a strong connection to the regional economy.
A special highlight is the MiO Fountain on Bifangplatz, erected in 1995 to mark the 50th anniversary of the fair. It stands as a symbol of the blend between tradition and future that defines the spirit of the MIO. Free admission and the easily accessible central location make the fair an important meeting point for the public, businesses, and institutions alike.
The MIO is more than just a fair—it is a vibrant expression of regional economic strength, a source of fresh ideas, and a space for connection and inspiration.
The MIO Olten Fair will take place on 3 days from Friday, 19. September to Sunday, 21. September 2025 in Olten.
19.09.2025 - 21.09.2025*
Friday - Sunday, 3 days
Audience:
professional visitors and general public
Cycle:
annually
1946
Local time:
19:21 h (UTC +02:00)
Fair location:
Aarauerstrasse,Aarauerstr., CH-4600 Olten, Solothurn, Switzerland
Hotels
for trade fair date in Olten
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Quartier-Verein rechtes Aareufer
CH-4601 Olten, Switzerland
Tel: +41 (0)62 2872222
Display e-mail address
www.mio-olten.ch
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20. - 22. September 2024
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22. - 25. September 2023
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23. - 26. September 2022
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24. - 27. September 2021
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20. - 23. September 2019
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28 Sep. - 01 Oct. 2018
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29 Sep. - 02 Oct. 2017
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30 Sep. - 03 Oct. 2016
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25. - 28. September 2015
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26. - 29. September 2014
Fair location:
Aarauerstrasse,Aarauerstr., CH-4600 Olten, Solothurn, Switzerland
Hotels
for trade fair date in Olten
Product groups: Beds, bicycles, cars, cell phones, chairs, cheese, clothes, doors, equipment, garage doors, heaters, jewelry, kitchens, microwaves, model cars, model helicopters, power, printers, shelves, shoes, sofas, solar panels, televisions, toiletries, washing machines, web solutions, windows, wines, …
Disclaimer: No responsibility is taken for the correctness of this information. Errors and alterations excepted! Fair dates and exhibition sites are subject to change by the respective trade fair organiser.
Trade show suppliers
FAQ
Where does the MIO Olten Fair taking place?
The MIO Olten Fair fair takes place in Olten, at the Aarauerstrasse.
When is the MIO Olten Fair taking place?
Visit the MIO Olten Fair from 19. - 21. September 2025.
How often does the MIO Olten Fair take place?
The MIO Olten Fair takes place annually.
What kind of fair is the MIO Olten Fair?
The MIO Olten Fair is an exhibition for Solar Industry, Jewelry and Gems and Model Making.
Update: 08.09.2025 10:04