On Running Ultra Belt 2L With 500ml Hydrapak Bottle

Built for the trails and engineered to move with you, the On Running Ultra Belt 2L is the technical trail running belt that adapts to your body's every stride. Paired with a 500ml Hydrapak Soft Flask, this sleek and streamlined hydration belt keeps you fuelled and focused — from fast-paced training runs to race day. Available at Run Trails.

Key Features

• Full range of stretch movement in every direction for unrestricted trail running performance
• Includes a 500ml Hydrapak Soft Flask with locking nozzle for secure, leak-free hydration
• Elasticated mesh side pockets for quick-access nutrition storage (gels, bars, snacks)
• Bungee cords on the back for trekking pole attachment
• Front pouch with room for phone and other valuables
• Fully ventilated construction with premium Darlington mesh main body
• Reflective logo and trims for low-light visibility and safety
• Targeted padding to minimise pressure points during long efforts

Fits to Your Body

The On Running Ultra Belt 2L is designed to move seamlessly with your body's unique motion. With stretch in every direction, it stays locked in place even on the most technical terrain — delivering full stability without restriction, no matter how demanding the trail.

360° Ventilation

Constructed with a premium Darlington mesh body, the On Running Ultra Belt 2L prioritises breathability from every angle. The fully ventilated design keeps airflow moving so you stay cool and comfortable, even when the pace and temperature rise.

Streamlined Trail Running Storage

Carry everything you need — nothing you don't. The 500ml Hydrapak Soft Flask with locking nozzle keeps you hydrated on the go. Elasticated mesh side pockets provide fast access to energy gels and nutrition. Bungee cords secure hand poles to the back, while the front pouch safely stores your phone and essentials.

Specifications

• Brand: On Running
• Model: Ultra Belt 2L
• Included: 500ml Hydrapak Soft Flask with locking nozzle
• Capacity: 2L total storage
• Flask Volume: 500ml
• Main Body Material: Premium Darlington mesh
• Pockets: Elasticated mesh side pockets + front pouch
• Pole Attachment: Bungee cords (rear)
• Visibility: Reflective logo and trims
• Padding: Targeted padding at pressure points
• Weight: 200g
• Colours Available: Black
• Sizes Available: S, M, L, XL
• Fit: Unisex
• Activity: Trail Running, Ultra Running, Hiking
• Purchase Location: Run Trails

Why Buy the On Running Ultra Belt 2L at Run Trails?

Run Trails is Australia's dedicated trail running destination, stocking the gear that serious trail runners trust. The On Running Ultra Belt 2L is a standout in On Running's trail hydration lineup — combining technical performance, smart storage, and body-adaptive fit for runners who demand more from their kit.