Trail Running Guides: Gear, Hydration & Training
Why Does a Soft Flask Collapse as You Drink?
A soft flask that gets smaller while you drink is behaving differently from a rigid bottle. Its flexible body can change shape as the contents leave. That changing shape is...
Why Does a Soft Flask Collapse as You Drink?
A soft flask that gets smaller while you drink is behaving differently from a rigid bottle. Its flexible body can change shape as the contents leave. That changing shape is...
Hydration Bladder Sloshing: How to Reduce Water Noise on a Run
Identify water noise, reservoir movement and whole-pack bounce. Check excess air using your model instructions, reservoir position and the complete running load.
Hydration Bladder Sloshing: How to Reduce Water Noise on a Run
Identify water noise, reservoir movement and whole-pack bounce. Check excess air using your model instructions, reservoir position and the complete running load.
Soft Flask Leaking? Check the Cap, Valve and Bottle Body
Dry the outside and locate where water first appears. Check the cap, valve, connections and bottle body before seeking model-specific support.
Soft Flask Leaking? Check the Cap, Valve and Bottle Body
Dry the outside and locate where water first appears. Check the cap, valve, connections and bottle body before seeking model-specific support.
Soft Flask With a Straw or a Standard Bite Valve?
Choose a soft flask mouthpiece by pocket position, comfortable reach and after-run care. Compare straw-mounted and cap-mounted bite valves.
Soft Flask With a Straw or a Standard Bite Valve?
Choose a soft flask mouthpiece by pocket position, comfortable reach and after-run care. Compare straw-mounted and cap-mounted bite valves.
How Global Are Trail Running World Series? Three 2026 Calendars Compared
Compare the 2026 UTMB, Golden Trail and Skyrunner calendars by event format, geography and terrain before choosing a series to follow or race.
How Global Are Trail Running World Series? Three 2026 Calendars Compared
Compare the 2026 UTMB, Golden Trail and Skyrunner calendars by event format, geography and terrain before choosing a series to follow or race.
Where Are the Highest Trail Running Races? Altitude Needs a Clear Definition
Compare high-altitude running events in Nepal and India, and learn why start altitude, course high point and trail surface are different measures.
Where Are the Highest Trail Running Races? Altitude Needs a Clear Definition
Compare high-altitude running events in Nepal and India, and learn why start altitude, course high point and trail surface are different measures.