The Klimathon
The sustainability challenge for municipalities & companies

The Klimathon is an app-based 42-day challenge that enables local authorities and companies to motivate their citizens and employees to become more sustainable in a fun way.

2zero Klimathon in der App – Home Screen
2zero Management Portal Mockup
2zero Klimathon in der App – Community Screen

What is the Klimathon?

The Klimathon is your app challenge for more sustainability with a fun factor. 42 days to change behaviour and make a real difference.

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6 Weeks – 6 Topics - 0 boredom

From mobility to saving energy: Each week brings new challenges that encourage participants to rethink and take action.

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Daily challenges straight to your smartphone

No lectures, no blah blah blah: the app provides exciting tasks, quizzes and ClimateGoodNews every day. Sustainability has never been so suitable for everyday use.

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Gamification that truly motivates

Collect points, rise in the rankings, earn rewards - without pressure, but with fun and real impact.

Four steps to your Klimathon

book a Demo Meeting

You book a short meeting and see live how the Klimathon works

book a Klimathon

You decide on one of our packages, choose your preferred date - and we get started.

Preparation

We prepare everything for you: Access to the app, management portal, marketing materials.

Start of the Klimathon

Your participants download the app and get started!

What are the benefits of the Klimathon?

A strong signal for sustainability. And with measurable impact, minimum effort and maximum participation.

2zero App Mockup Challenges
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Big impact, little effort

You receive a ready-made solution: app access, communication package, templates and personal support

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High participation guaranteed

With 2zero, you can reach all target groups - through interactive content with everyday relevance and modern marketing templates

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Scientifically based

2zero is based on a research project for playful sensitisation to the topic of sustainability

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Jetzt Demo vereinbaren

Erlebt den Klimathon in 30 Minuten live und seht, wie einfach ihr eure Zielgruppe begeistert.

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Was unterscheidet den Klimathon für Kommunen und Unternehmen?

Ob Kommune oder Unternehmen, der Klimathon passt sich euren Themen an. So erreicht ihr eure Zielgruppe mit genau den richtigen Inhalten.

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Klimathon für Kommunen:

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Zielgruppe

Bürger:innen eurer Kommune
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Themenschwerpunkte

Ernährung, Wohnen, Konsum, Mobilität, Freizeit, Digitales
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Kommunikation

Bewerbung über Stadtkommunikation, Presse & Social Media
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Vorteile

Echte Bürgerbeteiligung mit niedriger Einstiegshürde, stärkt Sichtbarkeit des Klimaschutz vor Ort
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Strategische Relevanz

Erfüllt Beteiligungsanforderungen der Kommunalrichtlinie, ideal als Maßnahme im IKK
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Klimathon für Unternehmen:

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Zielgruppe

Mitarbeitende in eurem Unternehmen
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Themenschwerpunkte

Energiesparen am Arbeitsplatz, Gesundheit im Job, Mobilität & Arbeitsweg, Digitales Arbeiten, (Home) Office, Ernährung im Berufsalltag
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Kommunikation

Interne Kanäle wie Newsletter, Slack, Intranet, Events und externe Kommunikation – z. B. für Website, Pressearbeit und Employer Branding
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Vorteile

Macht Nachhaltigkeitsstrategie greifbar, erleichtert interne Kommunikation von Werten, stärkt Wir-Gefühl im Unternehmen
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Strategische Relevanz

Beitrag zur Nachhaltigkeitsstrategie und zum ESG-Reporting, sichtbares Engagement für Mitarbeitende und Öffentlichkeit

Über 90 Kommunen & Unternehmen vertrauen bereits auf den Klimathon

"With 2zero, we’re giving another boost to our EU Mission “100 Climate-Neutral Cities” pilot project CoLAB. This allows us to motivate citizens with changing challenges for a sustainable everyday life, helping them playfully move from knowledge to action.“

Agnes Schönfelder

City of Mannheim

"The Climathon showed us that the 2zero app simplifies communication and clearly illustrates how much CO₂ was saved together. Definitely recommendable for other municipalities!"

Fabian Humpert

Climate Protection Manager of the City of Verl

"The Climathon is an initiative that, with its daily challenges and many practical tips, shows everyone individual ways to change their behavior and thus have an impact on our climate. We highly recommend the Climathon."

Celia Dustmann

F.A.Z. BUSINESS MEDIA GmbH

"Communication with 2zero was perfect, problems were promptly discussed and resolved, and a competent team member was always there to provide support"

Dr. Lisa Rütgers

Climate Protection Manager of the District of Ebersberg

"The diverse range of climate-friendly behavior measures makes the 2zero app an innovative climate protection tool for behavior-oriented climate action."

Andreas Oeding

PR Manager of the Climate Pact Flensburg

"The Climathon showed us that the 2zero app simplifies communication and clearly illustrates how much CO₂ was saved together. Definitely recommendable for other municipalities!"

Fabian Humpert

Climate Protection Manager of the City of Verl

"A great app to introduce young agricultural trainees to the importance of sustainable practices for climate protection in a way that is targeted and easy to understand."

Sven Jantzen

bbz Bad Segeberg

"The diverse range of climate-friendly behavior measures makes the 2zero app an innovative climate protection tool for behavior-oriented climate action."

Andreas Oeding

PR Manager of the Climate Pact Flensburg

"With this initiative, we managed to get our colleagues to take action – that’s a great success. Working with you was an absolute pleasure!"

Dr. Daniel Rackensperger

City of Munich

"The Climathon offers us as a municipality a great opportunity to engage with different target groups. The content is very informative and easy to understand."

Lisa Macheleidt

Climate Protection Manager of the State Capital Kiel

"The 2zero support team is very accommodating, innovative, thoughtful, and helpful. We had numerous specific requests for changes in Lüneburg, and almost all of them were implemented promptly."

Karina Hellmann

Climate Protection Manager of the Hanseatic City of Lüneburg

"The Climathon offers us as a municipality a great opportunity to engage with different target groups. The content is very informative and easy to understand."

Lisa Macheleidt

Climate Protection Manager of the State Capital Kiel

"The Climathon showed us that the 2zero app simplifies communication and clearly illustrates how much CO₂ was saved together. Definitely recommendable for other municipalities!"

Anna-Lena Enskat

City of Duderstadt

NDR Beitrag Klimathon in Schleswig-Holstein
NDR Beitrag zum großen Klimathon in Schleswig-Holstein 2025
Der Wettbewerb Klimathon läuft 42 Tage in Schleswig-Holstein. In der App 2zero wird angezeigt, wie viel CO2 man bei bestimmten Aktivitäten produziert und wie viel man einsparen kann.
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»2zero ist eine der bislang vielversprechendsten Klimaschutz-Apps für Kommunen und Unternehmen. Verspielt, witzig und dabei wissenschaftlich fundiert werden hier klimafreundliche Maßnahmen mit Mehrwert für Mensch und Umwelt vermittelt. Auf den Smartphones in unserer Testredaktion hat 2Zero jedenfalls einen festen Platz.«

Gesamtwertung

How the KVR Munich successfully implemented the Climathon

In cooperation with 2zero, the Munich District Administration Department (KVR) made a great contribution to climate protection. The following report provides an insight into the initiative

1 year of sustainable change: The city of Asperg and 2zero

To gain insight into the city's progress, we spoke with Stephanie Owerfeldt, the municipal climate protection officer for the city of Asperg.

The Randstad Climathon: a global initiative for sustainability

Discover how almost 900 participants from 16 different countries are committed to climate protection at the Randstad Klimathon.

F.A.Z. Business Media experience report: 60% participation for sustainability

Find out how the Business Klimathon at F.A.Z. Business Media took place and achieved impressive results with 60% participation!

Experience report from Lüneburg: Our journey through the Climathon

Insights into the motivation, effort, and collaboration with 2zero during the Climathon of the Hanseatic City of Lüneburg!

From successes to new goals: Climathons in Schleswig-Holstein

The annual Climathons by 2zero in Schleswig-Holstein are excellent examples of how local engagement and sustainability can go hand in hand.

Sustainability funding program: LEADER supports the 2zero annual membership

Thanks to the LEADER funding program, the municipality of Ostercappeln has made significant progress toward sustainability with 2zero. The application process went smoothly.

50% commitment and 50 tons of CO2: The Sparkasse Neunkirchen Climateathon

Find out how Sparkasse Neunkirchen successfully organized a climathon in which half of its workforce implemented sustainable practices at work, at home and in mobility.

Unsere Tools für euren Klimathon

Wir motivieren eure Zielgruppe mit der 2zero App und liefern alles, was ihr für hohe Beteiligung und starkes Engagement braucht.

Was kostet der Klimathon?

Die Kosten richten sich nach Teamgröße bzw. Einwohnerzahl. Transparent und ohne versteckte Gebühren.

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Klimathon für Kommunen:

schon ab

2.490€

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Klimathon für Unternehmen:

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1.990€

Bereit für euren eigenen Klimathon?

Bucht jetzt eine Demo und geht euren ersten Schritt zu mehr Nachhaltigkeit

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