
106 km|5 Postcards|Has StreetView









"Stop! This is the Empire of Death."
Discover the true story buried beneath the City of Light! By the late 1700s, centuries of burials had left the cemeteries of Paris overflowing.
But what could the city do?
Follow the true story of how the Parisian underground became the final resting place of more than six million Parisians.
Walk, run, or move through the hidden history of Paris and unlock rewards along the way.



Track all your kilometres in the mobile iOS or Android app. Log them manually or sync your favorite fitness tracker or smartwatch. Any activity counts! Yes, even things like yoga and weightlifting.
The in-app converter automatically turns activities into progress on your map. *Currently, we support: Apple Watch & Health, Google Health, Garmin, Strava.

We will donate toward planting a tree or stopping plastic from polluting the environment for every 20% of the challenge you complete.
There’s no extra work or cost for you — just make sure you keep exercising!
By the end of the challenge, you will have planted 5 trees or have stopped 50 plastic items. Imagine what we can achieve as a community!
So far, we have planted 19.1M trees and stopped the equivalent of 79.8M plastic items from reaching the environment.

Each participant gets access to our private Facebook group.
Words cannot describe how awesome our community is — seriously they can't.
People from all over the world will encourage you, share their stories, wins, and losses with you, and make you feel part of our tribe. Once you've signed up we will send you an invitation link.

Log and see your progress on our iPhone and Android mobile app.
Any distance-based activity can count toward reaching the finish line. Do cartwheels if that's your thing.
Pick your start date and choose how many weeks you want to set as your goal to complete the challenge depending on your exercise type, fitness level and how many other people there are in your team (if any).
Get a group of friends or workmates together and share the load, or take on the challenge by yourself.
Select your challenge below, track your progress in our app, and earn your medal when you cross the finish line.

Select your challenge below, track your progress in our app, and earn your medal when you cross the finish line.
Life got in the way and can't start a challenge? Just contact us for a no-questions-asked refund. We're committed to your success and believe in the effectiveness of our programs.
1,000,000+ conquerors
Trusted us to help them reach their goals

Start your journey & unlock your potential