The map from dannmer is still linked from the main Wheaton Regional Park page, which calls this path the Wheaton Regional Trail.

On the other hand, there is a new Dec 2024 planning doc that calls it the Nairn Trail again. I am very confused. Maybe it's just shorthand for "This trail continues to Nairn Road" for construction purposes?

Related: dannmer's map also appears to call the unpaved trail continuing from Henderson Ave as "Wheaton Regional Trail," too. It's unclear how much bears that name.