wikiHow Converting Miles to Kilometers Practice Problems 1. John drove 50 miles. How many kilometers did he travel? 2. A marathon race is 26.2 miles long. What is the length of the race in kilometers? 3. Sarah is planning a road trip and the distance between two cities is 180 miles. What is this distance in kilometers? 4. The speed limit on a highway is 65 miles per hour. What is the speed limit in kilometers per hour? 5. A road sign indicates that the next town is 30 miles away. What is this distance in kilometers? 6. A car's fuel efficiency is 28 miles per gallon. What is the fuel efficiency in kilometers per liter? 7. Alex ran a 10-mile race. How many kilometers did Alex run? 8. The distance between two landmarks is 5.5 miles. What is this distance in kilometers? 9. A road trip covers a distance of 300 miles. How many kilometers were traveled? 10. A bicycle race is 100 kilometers long. What is the length of the race in miles? 11. The speed of sound is approximately 767 miles per hour. What is the speed of sound in kilometers per hour? 12. The elevation gain of a hiking trail is 2,000 feet. What is the elevation gain in kilometers? 13. A race track is 1.5 miles long. What is the length of the track in kilometers? 14. The distance between two cities is 250 miles. What is this distance in kilometers? 15. A car travels at a speed of 55 miles per hour. What is the speed in kilometers per hour? 16. A plane flies a distance of 2,500 miles. How many kilometers did the plane fly? 17. The circumference of a circular track is 3.14 miles. What is the circumference in kilometers? 18. A road trip covers a distance of 800 kilometers. How many miles were traveled? 19. The length of a hiking trail is 10 kilometers. What is the length of the trail in miles? 20. The speed limit on a road is 100 kilometers per hour. What is the speed limit in miles per hour? Page