What is the maximum distance a plane can fly travelling constantly North?

10,002 km
20,004 km
40,007 km
It can fly endlessly (as long it can)
Continuous travel North must eventually end at the North Pole. So, the maximum distance is half of the Earth's meridional circumference, which can be reached if a plane starts at the South Pole.
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Answers by country

10,002 km
20,004 km
40,007 km
It can fly endlessly (as long it can)
answers
flagItaly
4%
82%
4%
8%
47
flagMalaysia
7%
53%
7%
30%
13
flagGermany
9%
51%
19%
15%
72
flagGreece
15%
50%
21%
12%
32
flagFrance
20%
50%
20%
8%
24
flagLithuania
27%
45%
0%
27%
11
flagIndia
12%
39%
16%
29%
131
flagAustralia
13%
38%
18%
27%
59
flagthe United Arab Emirates
5%
38%
22%
33%
18
flagThailand
23%
38%
23%
15%
13
flagIsrael
7%
38%
15%
23%
13
flagPoland
9%
36%
18%
34%
15340
flagCanada
21%
36%
14%
26%
41
flagthe United States
11%
33%
20%
31%
634
flagthe United Kingdom
14%
32%
16%
34%
200
flagthe Netherlands
8%
32%
17%
38%
34
flagRepublic of Ireland
21%
30%
17%
30%
23
flagthe Philippines
15%
26%
21%
36%
19
flagUnknown
15%
21%
21%
42%
19
flagNorway
13%
20%
33%
33%
15