How many hits with same km and days do you have?

[MARIUS-FFB]

I have only 4 hits with the same amount of km and days:

with 15 km and 15 days https://en.eurobilltracker.com/notes/?id=160240567 (2016-01-25)
with 31 km and 31 days https://en.eurobilltracker.com/notes/?id=191151776 (2018-12-27)
with 273 km and 273 days https://en.eurobilltracker.com/notes/?id=143275871 (2015-06-11)
with 648 km and 648 days https://en.eurobilltracker.com/notes/?id=143301318 (2016-06-20)

[Henk Draijer]

Distance = x km, time difference = x days

4 x 4
7 x 7
12 x 12
14 x 14
17 x 17
24 x 24
99 x 99
155 x 155