ON Ultra are super lightweight pants for trail racing, loaded with tech but as compact as possible, so you can tame any trail.

Made for long runs through extreme conditions, these ultralight trail racing pants can withstand any weather. Temperature hike? They're ready for that. A small, power mesh pouch at the waistband allows for quick and compact storage, so you can focus on your run.

No record is too far when you have the right apparel to get you there. Developed in motion, the Ultra Pants match each of your steps, so you can reach the top without any resistance. And premium reflective logos, ensure that you shine, even as the lights go down.

Feel no rain. Feel no dirt. Made with 2.5 layers of moisture-wicking fabrics, these pants will keep you dry through long trail runs in changing weather. An elastic waistband and cuffs provide added protection, so you can embrace the excitement when you break your personal record.