Get to (T) Gullmarsplan and from there to the square with benches and a Christmas tree in front of Systembolaget ...
Bring a mug if you want to drink at the drinkstops and a flashlight or similar since sunset is at 14:48 and twilight is at 15:43 if you want to see the trail ...
If possible run with a backpack, since there may be no hashcar...