For those of us who have used Auto Hotkey in the past (perhaps on Make It Rain!) there's a nice little piece of script that will help you macro this achievement.
Auto Hotkey can be found here if you don't have it:
https://autohotkey.com/Download, then go to your desktop, right click and select "NEW". When the different file options appear, choose "New Auto Hotkey file".
You should be able to edit in some new script via Notepad.
The script to enter is as follows:
toggle=0
F12::
If (toggle := !toggle)
SetTimer, Timer, -1
return
timer:
while toggle
{
Click
Sleep, 450
}
return
Save this file to your desktop (file name really doesn't matter) and close.
Double click on the file to set the script running, then open Alto's Adventure.
Now, what the script will do is register a mouse click every 0.45 seconds. All you have to do is get the game started, then move the mouse to the bottom right corner of the game window (where "Play Again" appears after a run down the slopes) and hit F12 to start the script.
You'll notice your skiier jumping every 0.45 seconds, which I've found is a really good interval to allow you to get 1000m down the slope at least half the time. Sometimes you'll fail after 300m, other times you'll go 3000m.
importantly, the script can be started by hitting F12, and it can be stopped by hitting F 12. This is important because after every 5-7 runs down the slopes, an advertisement will play in the Alto's Adventure game window. If you don't stop the script, you'll end up clicking on a download button and end up in the Windows Store.
It is unlikely you'll purchase a game (most of the time you'll end up auto-clicking on the gallery and looking at a picture of the game the advertisement wants you to download). But what this does is, obviously, stop you gaining metres by skiing.
When an ad appears, hit F12. Go to the top left corner to click out of the ad and back into Alto's Adventure, start your next run, move your mouse to the bottom right corner and hit F12 to resume your script's operation.
EDIT - 17/8/16
An improved script for this achievement is featured in comments to another solution and comes from Palesius - I'm going to quote it below (with his permission) as it incorporates something very important - detecting and avoiding ads.
Thanks so much Palesius - all credit to him, and thanks for reaching out and helping get the word out there:
Palseus says ...
Here is a slightly improved script. It will resize your window to about 1024x768 (inside dimensions), it will make you jump and restart, but it will also detect ads, wait for them, to end, and close them.
F12::
If (toggle := !toggle)
{
WinMove,Alto's Adventure,,,,1040,776
WinActivate,Alto's Adventure
sleep, 1000
SetTimer, Timer, -1
}
return
timer:
;test found
while toggle {
PixelGetColor, pc, 20,50
if pc = 0x000000
sleep, 1000
else if pc = 0xffffff
{
mouseclick, left, 20, 50
sleep, 1000
}
else
{
mouseclick, left, 950, 710
sleep, 450
}
}
return
For Palseus' original comment, as well as an improved script from him which prioritises llama catching, refer to the comments in the
solution. Again, all credit goes to Palseus.