On Twitter, Google’s Gary Illyes confirmed that Google likes breadcrumb navigation links.
In general, Google likes websites that provide a good user experience and websites with a clear navigation. Breadcrumb navigation helps shows how a website can be found within a site, for example: Homepage > Shoes > Sneakers > Adidas > Campus > Blue
Here’s the tweet:
We likes them. We treat them as normal links in e.g. PageRank computation— Gary Illyes ᕕ( ᐛ )ᕗ (@methode) 22. Juni 2017
The internal link structure of your website is important. You can check it with the website audit tool in SEOprofiler: