In their Zazzle shop, Disney offers a huge selection of officially licensed apparel and other gear. I previously shared how to use Zazzle's tools to customize race t-shirts.
Zazzle also offers athletic-style leggings and all-over-print tank tops in costume style, making for easy and officially licensed costume choices for races.
The leggings are made of a comfortable and slightly compressing polyester-spandex blend. Note that these do not have pockets of any kind, so you'll have to carry any necessary nutrition and/or gear in a waist pack, armband, or other method.
The tank tops are also made of a poly-spandex blend.
I'm highlighting these for the upcoming Walt Disney World Marathon Weekend in January 2022, but these would be great for other races where running in costume is part of the fun.
Note that both of these garment styles are made using a cut-and-sew process, which means that the design elements on the different pieces of fabric might not line up exactly, which especially depends on the size of garment you're purchasing. This is normal and shouldn't be too noticeable while wearing.
Buzz Lightyear Costume Leggings and Tank Top
Dress up like old-school astronaut toy Buzz Lightyear with this easy kit. With the origin-story Lightyear movie coming out next summer, this Toy Story character is as popular as ever. Consider adding a blaster as an accessory to go with this printed kit.
Toy Story's Jessie Costume Leggings and Tank Top
Dress up like Woody's gal pal sidekick Jessie with this legging and tank top set. I dressed as Jessie for the 2017 Disneyland Half Marathon with a different kit (self-painted shirt, denim-look skirt, cow print socks). Consider adding a red hat to complete this fun costume look.
Toy Story's Sheriff Woody Costume Leggings and Tank Top
Like Jessie above, consider adding a costume hat to complete your Woody costume.
Mrs. Incredible / Elastigirl Costume Leggings and Cotton T-Shirt
Note that this costume top is an everyday cotton shirt, not a polyester or sport blend. For that reason, this outfit might be best for a 5K distance. Add a pair of long black sweatbands to your wrists to copy the superhero look -- they're cooler than gloves.
If you decide to use one of these kits or costume pieces for your race, check if Zazzle has any coupons or promotions to apply. If you're not in a hurry, wait until a great sale before making your purchase.