Grass runway: length 760 meters, 15 meters wide circular grass runway.

草地跑道：长760米，宽15米环形草地跑道。

youdao

The runway is simply a strip of grass.

所谓跑道不过是一长条草地而已。

《牛津词典》

Before long, a chorus of pilots was radioing the tower to report turtles either on the end of a runway that juts out into the water, or approaching on the grass.

不久之后，飞行员们不约而同地通过无线电向控制台报告发现海龟，它们或是在一条跑道伸向水面的一端，或是爬上了草坪。

youdao

Land's End Airport is closed until Thursday because of a waterlogged grass runway, preventing Skybus flights.

BBC: Skybus

Managers said the move to Newquay would allow time for the Lands End grass runway to dry out.

BBC: Skybus

Last week the company said it was looking at the possibility of giving the grass runway at Land's End airport a hard covering, and that a decision would be made "soon".

BBC: Skybus