October 25, 2026 · 8 MIN
Running Vest and Hydration Pack Selection for Ultra Distances
Choosing the wrong running vest for an ultra can cost hours in chafing stops, overheating, and fumbled gear access. This guide covers volume sizing by distance, flask vs bladder trade-offs, fit geometry, and pocket layout to help you pick the right hydration pack for events from 50K to 100 miles.
