I sweat like crazy and if I need to be running for more than an hour I'm going to want something to drink. But if I'm running an ultra (or doing a very long hike, or bike packing) having variety in fuel sources is really good for your mental health.

A friend of mine hardly has to fuel during ultramarathons and I am very jealous.

Also shout out to trader Joe's for selling olives in little pouches. Also great for long days.

Edit: for those scientific people out there, salt isn't the only thing that helps you hydrate, sugar also helps bring those salts and water into your system. So when I make my own sports drink I use the WHO recipe for Oral Rehydration Solution (ORS). Which is really salty, but as stated above, I am a very sweaty boi.

Sugar also is fuel for running longer, so I don't see why not.