Kilometres Hour facts
While investigating facts about Kilometres Hour To Metres Second and Kilometres Hour Miles, I found out little known, but curios details like:
The oldest person to ever complete a marathon is Fauja Singh, who ran the Toronto Waterfront Marathon in 2011 at the ripe old age of 100 years  also making him the only ever centenarian to do such! He completed the 42 kilometres in a bit over 8 hours.
how to calculate kilometres per hour?
102yearold cyclist Robert Marchand who held the 100plus category onehour record of 24 kilometres and 251 metres until he broke his own record at the age of 102 years riding 26 kilometers and 927 metres in one hour.
What is the speed of sound in kilometres per hour?
In my opinion, it is useful to put together a list of the most interesting details from trusted sources that I've come across answering what's 60 miles an hour in kilometres. Here are 12 of the best facts about 50 Kilometres Hours and 200 Kilometres Hour I managed to collect.
what is the speed of light in kilometres per hour?

A skydiver fell at 130 kilometres an hour, but landed on top of a fire ant nest. The stinging from the ants provided adrenaline to her body which kept her alive.

There are 24hour long ultramarathons in which you run as far as you can and the best runners can go beyond 270 kilometres (~168 miles)

The Challenger crew did not die instantly, but instead fell for approximately 2 minutes and 45 seconds before plunging into the Atlantic Ocean at 321 kilometres per hour.

A classic Viking ship was 100 feet long and 25 feet wide and could carry a crew of almost 200 armed men with 50 oars, achieving speeds of 11 knots (20.372 kilometres per hour).

Wildfires "can move as fast as 10.8 kilometres per hour (6.7 mph) in forests and 22 kilometres per hour (14 mph) in grasslands."

Rally was so much faster than I thought: "... fairly flying across the waste at over 200 kilometres per hour ..." 1984 Dakar

Wim Hof completed a full marathon (42.195 kilometres (26.219 mi)), above the arctic circle in Finland, in temperatures close to −20 °C (−4 °F). Dressed in nothing but shorts, Hof finished in 5 hours and 25 minutes.

There are nuclearpowered ships designed to break through sea ice 2.5 metres thick at almost 20 kilometres per hour.

The first speeding ticket in Norway was given to a tram driver in 1894 for exceeding the speed limit of 18 kilometres per hour (11 mph) on the Briskeby Line, in Oslo.

In 2011 the Norwegian public broadcaster NRK livestreamed a 134hour cruise from Bergen to Kirkenes, that 2920 kilometres, nonstop.