Tree, what tree?!
We've all been there: a perfect flight, a perfect parachute, and then the rocket drifts gently into the one tree in the field. This one turns that into points. Get your rocket to come to rest 10 metres above the launch pad, give or take half a metre, and you win. The flight has to reach 80 m first, so you can't just climb up and hang one there. Everyone who manages it wins the points, once each. Your later flights go on the leaderboard, but the points are paid once per flyer.
Target: 10 m above the pad
About this challenge
We've all been there: a perfect flight, a perfect parachute, and then the rocket drifts gently into the one tree in the field. This one turns that into points.
Get your rocket to come to rest 10 metres above the launch pad, give or take half a metre, and you win. The flight has to reach 80 m first, so you can't just climb up and hang one there.
Everyone who manages it wins the points, once each. Your later flights go on the leaderboard, but the points are paid once per flyer.
How it's measured
From your altimeter's own log: the height it came to rest at, compared with the pad it took off from. A tree is the obvious way to get there, but we don't mind how you do it, as long as you're within half a metre of 10 m.
A few pointers
- Let the altimeter finish its log before you bring the rocket down, so it records where it came to rest.
- Please don't climb anything to get your rocket back, and never go near power lines. A long pole, or a friendly landowner, is the way.
- Ask before you fly near someone else's trees.
Entering your flight
Upload the flight as normal, then set the launch site, date and time on its flight page. Then open the Add my flight tab here and pick it.
Fly safely, and follow the safety code of your club or national association.
Your altimeter works out height from air pressure using a standard atmosphere: the sea-level pressure and temperature in its settings, usually 1013.25 hPa and 15 °C. The real day is rarely standard. Cold air is denser, so an altimeter set for 15 °C reads high on a cold day and low on a warm one, by roughly 1% for every 3 °C, which is about 2 m at 200 m.
So every flight is judged on the height it really reached, we take the weather added to your flight for its launch site, date and time, and recalculate the whole log with it. It's the same adjusted apogee the flight page shows, and it's the one that scores.
How it pays
- To win
- Come to rest within 0.50 m of the target height
- Pays
- 300 points to every flyer who makes it
- Once each
- Your later flights go on the leaderboard but don't pay again
- Points paid
- Once we have checked the entry
- Dates
- From 5 Nov 2026
Required altimeters
The flight is checked against the altimeter that recorded it
- Hardware
- Rev 4 or later
- Firmware
- 1.65 or later
- Hardware
- Rev 1 or later
- Firmware
- 2.50 or later
- Hardware
- Any revision
- Firmware
- 1.02 or later
- Hardware
- Any revision
- Firmware
- 1.00 or later
Required flight details
Everything is checked when you add a flight- Your own flightFrom an altimeter on your account, and a real flight rather than a test.
- Launch siteSet on the flight page.
- Launch date and timeSet on the flight page.
- Launch weatherAdded to the flight once its site, date and time are set. Altitudes here are corrected for it.
- Apogee of at least 75 mCorrected for the launch weather.
Your altimeter works out height from air pressure using a standard atmosphere: the sea-level pressure and temperature in its settings, usually 1013.25 hPa and 15 °C. The real day is rarely standard. Cold air is denser, so an altimeter set for 15 °C reads high on a cold day and low on a warm one, by roughly 1% for every 3 °C, which is about 2 m at 200 m.
So every flight is judged on the height it really reached, we take the weather added to your flight for its launch site, date and time, and recalculate the whole log with it. It's the same adjusted apogee the flight page shows, and it's the one that scores.