I realize your post asked about "running boards," so you may not be interested in oval side steps. This is what I installed on my 2017 Ram. They are actually better made, far more functional, and much less expensive than the Westin step-to-step bars I had on my previous Ram.
https://www.amazon.com/Mifeier-Curv...1-4&keywords=mifeier+5+inch+oval+ram+crew+cab
These oval steps are extremely sturdy. I'm 240 lbs and they do not flex even a little bit. They are plenty wide, so my short wife has no problem getting in or out. In fact, they protrude beyond the outside edge of the tires, which helps prevent (but not eliminate) door dings.
If you're interested, you can read my complete review on the Amazon site (it's by "Kindle Customer" on Jan 22, 2018). These step bars still look brand new after seven months. Of course, that's not a very long time, plus I'm in Florida ... no idea how they might hold up to a MA winter.