 
 <translate> To answer this question, we should know that: Known as a family-oriented seaside resort, Ocean City has prohibited the sale of alcoholic beverages within its limits since its founding in 1879, offering miles of guarded beaches, a boardwalk that stretches for 2.5 miles (4.0 km), and a downtown shopping and dining district. So, the answer is 2.5 miles. <ibo> Iji zaa ajụjụ a, anyị kwesịrị ịmara nke a: Ebe a maara dị ka ebe ezumike dị n'akụkụ osimiri nke ezinụlọ na-anọkarị, Ocean City amachibidowo ire ihe ọṅụṅụ na-aba n'anya n'ime ókèala ya kemgbe e guzobere ya na 1879, na-enye ọtụtụ kilomita nke osimiri ndị a na-eche nche, ụzọ ụkwụ na-agafe agafe nke dị kilomita anọ n'ogologo, na ógbè azụmahịa na nke iri nri n'etiti obodo ahụ. Ya mere, azịza ya bụ kilomita 2.5. 