Nobody knew the distance.
Each night, the next day's distance went up on the app news feed and Harry's socials. Run it the next day and you earned a ticket for every kilometre, up to the day's distance.
Fall short and you still banked a ticket per kilometre you ran. You could split it across the day, treadmills counted, there was no minimum pace, and you only ran the days you wanted to.
378 runners. 30,232km of mystery.
Over 30 days of surprise distances, the field logged 2,566 daily entries in the Harry's app. Here's who ran the furthest.
Top 3 men
- 1Paul P.800.0 km
- 2Mitch M.713.7 km
- 3Brendan S.611.3 km
Top 3 women
- 1Tamara U.463.0 km
- 2Nagiska M.391.6 km
- 3Laura C.364.2 km
Same day or it didn't count.
Each day's distance had to be run on the day and logged as that day's single entry in the Harry's app. Any of these and the run didn't count.
Backdated from an earlier day.
Didn't countNot tracked on a GPS wearable.
Didn't countMissing distance, elapsed time, pace or heart rate.
Didn't countNo image proof uploaded.
Didn't countTracking & Submission
- GPS wearable: COROS, Garmin, Apple Watch, Strava, etc.
- One upload a day. Split runs were fine, as long as every run went into that day's single entry.
- Upload image proof, and add the Strava link if you had one.
- Issues? ethan@hardcoreharrys.com.au
Next time
The Mystery Run was free to enter with the Harry's app. It's finished, so download the app and grab the next challenge from the Challenges feed.
Get the appShow full disclaimer
Participation is voluntary and at your own risk.
You confirm you are in good physical health and assume all liability for any injuries. Hardcore Harry's AU PTY LTD reserves the right to disqualify any entry that violates submission rules. Repeated violations may lead to removal from the challenge.What is a daily streak challenge?
A streak challenge asks you to do something every day for a set run of days. The daily target is usually modest. The challenge is turning up again tomorrow, and the day after that.
That's what makes streaks work for building a habit. You stop deciding whether to train, because the only question left is when. Most people find a time of day that sticks, early morning or straight after work, and protect it.
In the Harry's app every day you complete counts on its own, so a missed day costs you that day, not the whole challenge.
- Streak
- A run of consecutive days where you hit the target.
- Daily minimum
- The least you have to do for the day to count.
- Consistency
- Showing up often, the thing streak challenges reward most.
From download to the draw.
- 1
Download Harry's
Free on the App Store and Google Play.
- 2
Join the challenge
This one's finished, so find the next challenge in the Challenges feed and tap join.
- 3
Do it. Prove it.
Track it with your watch or a running app, then log it in the Harry's app with a screenshot or your Strava link.
- 4
Climb the board
Every entry goes on the leaderboard, and earns your shot at the prizes.
The Mystery Run challenge, explained.
More challenges like this.
What's Next?
Download Harry's free and watch the app for the next one.


