Question: When did the namesake of Pre's Trail, located on the north side of the Willamette River in Eugene, Oregon, United States, popularly referred to as "Track Town USA", is a four-mile-long running and walking trail named after a heralded University of Oregon athlete die?
Sentence (from "Pre's Trail"): Pre's Trail, located on the north side of the Willamette River in Eugene, Oregon, United States, popularly referred to as "Track Town USA", is a four-mile-long running and walking trail named after heralded University of Oregon athlete Steve Prefontaine.
Relevant evidence: Yes