211.266205 miles per hour.
Source: http://www.Google.com/search?q=340+kilometers+to+miles
(The hours don't matter because they are both per hour)
300 kph = 186.4 mph
340kph is 211.266 MPH
~2,236.94 mi/h
149.1mph
In mph; 340 kph is about 211.
217 mph(340kph)
About 6 mph.
25.71 mph
34 MPH
How many ft/s in 3.4 mph
24 mph
93.82705002783743 mph
11.50 mph
2.3 mph
2.302 mph
39.77 mph