A league is an old unit of distance that traditionally represented the distance a person could walk in about one hour. Its exact length has varied historically and regionally, but in English-speaking countries, a league is generally accepted as:
- 3 statute miles on land, which is approximately 4.83 kilometers
- At sea, a nautical league is typically 3 nautical miles , about 5.56 kilometers
Other historical variations include:
- Ancient Roman league: about 1.5 Roman miles or roughly 2.22 kilometers
- Spanish league: around 2.6 miles (4.2 km)
- Argentine league: 5 kilometers
- Brazilian league: 6 kilometers (no longer in use)
- French league: varied between about 3.25 km to 4.68 km depending on the period
In modern terms, the most commonly referenced league is the land league equal to 3 statute miles. To convert leagues to miles, multiply the number of leagues by 3 (e.g., 3 leagues = 9 miles)
. Thus, a league is roughly 3 miles or about 4.8 kilometers, but the exact distance depends on historical and regional context.