Two men ran into trouble at Kaena Point in separate, unrelated cases on Sunday.

A 40-year-old man died after he had trouble breathing while hiking in the Kaena Point area Sunday.

Honolulu police said the man had trouble breathing just after 11:25 a.m. He was taken to a nearby hospital where he died.

Police said the man had an undisclosed medical condition. There were no signs of suspicious circumstances.

In a separate unrelated case, a 24-year-old man suffered a cardiac arrest while bicycling at the Kaena Point Trail shortly after 11:15 a.m. Sunday.

Bystanders performed cardiopulmonary resuscitation on him until Ocean Safety personnel arrived, according to the Honolulu Fire Department and Honolulu Emergency Services Department.

The fire department’s Air 1 helicopter also responded and airlifted the bicyclist to a landing zone at Yokohama Bay where EMS personnel conducted advanced life support.

He was taken in critical condition to a hospital.