Strider is a focused pace calculator and race predictor for runners who want the math out of the way so they can train. Pop in a distance and a time and Strider returns your pace, your finish time, or the distance you covered — whichever you left blank. Predict a half marathon from a 5K. Plan your easy, threshold, interval, and repetition paces from a single race time. Read your splits in one tap. KEY FEATURES • Pace, time, and distance calculator with km/mile units • Race predictor using the Riegel formula (5K, 10K, half, marathon) • Training pace plan based on your current 5K — easy, marathon, threshold, interval, repetition • Split table generator from a target pace and distance • Clean single-screen tabs, no accounts, no ads, no tracking • Optimized for one-handed quick checks before a run WHY STRIDER You already know how to run. Strider just keeps the numbers honest. A clean dial, an unmissable answer, and the workout-prep tools you actually use — all on one stage. PRIVACY No tracking. No accounts. No upsells. Your inputs stay on your device.