InsideTracker.com
A simple blood test is taken to score dozens of key biomarkers. Then a thorough analysis with customized recommendations help athletes understand how their running, ultra training and other activities, and nutrition can affect their health.
Based in Utah, Gnarly's goal is to build sports nutrition that is clean, effective and great tasting for athletes of all experience levels. All of their products are NSF sport certified, and there are gluten-free and vegan options.
HoneyStinger.com
Endurance athletes require fueling that sits well in their stomachs during training and racing. Honey Stinger's gluten-free waffles, gels and chews deliver taste and energy without gut bombs.
UltrAspire.com
This Utah-based company makes products such as water bottles, vests, waist lights and headlamps for ultra runners and other athletes who covet a comfortable fit and useful gear.
SquirrelsNutButter.com
The anti-chafing salve protects athletes, even when conditions threaten blisters in sensitive areas. SNB also has a product specifically made for toes.
SaltStick.com
These electrolytes are made in the United States at an FDA-inspected facility and contain only what endurance athletes need, and nothing else. They are vegan, gluten-free and non-GMO, and don't contain any preservatives.