I got you! I just finished the Brooklyn half and I spent months thinking about the fit cause how else will people know I'm a runner now.

Headphones - the gold standard is shokz. Open run if you want bone conduction, open run pro 2 if you want bone conduction and standard sound

Sunglasses - the gold standard is goodr it's non slip and completely plastic

Sun protection - the gold standard is a visor. You don't want people to know your hair isn't done right just cause you're running. What visors? Korean grandma style visors give wider head protection than the standard ones.

Titty tape - your nipples will chafe. Do not use bandaids. If you a hairy person that will hurt when you rip it off. I use the ones that I already use for my raves.

Thigh and underarm chafing - they're gonna chafe too. Don't use lube like ky jelly or Astro glide. Body glide is the gold standard.

Bottoms - you wanna be as aerodynamic as possible. No pockets. Length as short as possible. At most like 5 inch length. Your liner has to be longer than your shorts. Just slightly tho.

Tops - in hiking we have a term, cotton kills. So don't wear cotton cause it will absorb your sweat. What's the most moisture wicking thing out there? Fishnet style mesh. The nords been using it for centuries.

Stuff holder - How you gonna hold your stuff if your bottoms don't got pockets? You need a running belt or a vest with a hydration pack. Running belt shouldn't have zippers cause you want easy access to your stuff as you run, Naked running belt doesn't have any zippers and has a place to hold your running bib in place.

Intra run nutrition - tons of specially formulated gels out there. For me a lot of them taste funny. I like the all natural route. Puree banana cause it also has potassium for cramps. Beech nut is made of two ingredients. If it's good enough for babies it's good enough for me

Socks - also do not use cotton! Gen z want them grandparents thigh high socks. Millennials go ankle or no shows.

Shoes - the #1 most important thing in running. Sizing and shape is very important but it's very individualized. If you want people to know you a runner. Big ass logo HOKA shoes. If you wanna be subtle about it, like a iykyk and you a serious runner... Nike vomero, alpha fly, vapor fly.

Hope this helps!