内うち回まわり

noun

inner loop; inner track; inner lane

Often used for train or bus routes that circle a city center in the inner direction, or for the inside lane of a track. The 'indoors' gloss is rare and context-dependent.

• 山手線やまのてせんの内うち回まわりに乗のってください。

  Please take the inner loop of the Yamanote Line.

• 陸りく上じょう競きょう技ぎでは、内うち回まわりのレーンが有ゆう利りだ。

  In track and field, the inner lane is advantageous.