I've made a walk like that and the short time fools you into taking it. It is brutal and the heat drives you ever more mad at the idiotic choices made by the people at city hall to only emphasize the way for cars. There's no reason that park entrance should not have also had a pedestrian entrance right there.
Most parks I've been to have pedestrian walkways flagging the road entrance or at the very least multiple ways to enter on all streets. The problem is that I think this just speaks to the places I've lived that have cared about this type of things and it's very much not the norm. This is insane.