The 4K course is a walk or run. No beach crossing involved in the 4K.
Note that the 12K and half marathon include the beach crossing, which is steep and rocky, and can be tricky footing.
a note on The beach crossing
Participants often ask why we have a beach crossing in the Run by the Sea. That's because it's currently the only legal way to get from Wilder Ranch to the northern bluff trails. The current Wilder Ranch State Parks maps show that you can use the rail connector, but these maps are actually indicating trails that are not legally accessible!
People are wild about this course. Seriously. Enjoy majestic views of the Monterey Bay and Pacific Ocean, the serene flats of Wilder Ranch's meadows, and maybe even catch a glimpse of some grey whales.