Zulau vs Ruby Pace

Zulau is the all-in-one pace toolkit for runners and triathletes — calculate your pace, predict your race times, and find your next marathon anywhere in the world. PACE CALCULATOR Enter a distance and time to instantly get your pace, speed, VDOT, and equivalent race times. Works for running, swimming (per 100m/100yd), and cycling (km/h and mph), plus full triathlon splits from Sprint to Ironman. RACE TIME PREDICTOR Know what you can run. Enter one recent result and get predicted finish times across every standard distance — 5K, 10K, half marathon, and marathon — using proven models (Riegel, VDOT, and weight-adjusted). MARATHON FINDER Plan your next race. Browse marathons around the world and filter by country, month, and terrain (flat, rolling, hilly) to find the perfect course for a personal best or a destination race. WHY ZULAU - Running, swimming, cycling & triathlon — all in one app - Fast, clean, and easy to use - Accurate, trusted calculation models - No account required Whether you're chasing a personal best, planning your race season, or just curious about your pace, Zulau gives you the numbers that matter — in seconds.

Calculate your pace, reach your goals. Ruby Pace is a clean and fast pace calculator built for runners of all levels. Whether you're training for a 5K or a marathon, get the exact paces you need in just seconds — based on your VMA or a target time and distance. From short intervals to long runs, Ruby Pace helps you train smarter, without the clutter. Features: - Calculate your training paces from your VMA - Find your ideal race pace from a time + distance goal - Clear, color-coded pace zones (easy, threshold, 10K, etc.) - Simple interface, zero distractions - Automatically saves your latest data - Designed for focused runners who want to progress without overcomplicating things. Turn your VMA into race-ready pace — instantly.