Zulau – Pace & Marathon Finder

Zulau (formerly PaceTri) is the all-in-one pace calculator and marathon race finder for runners, swimmers, cyclists, and triathletes. Calculate your pace, predict your race times, and find your next marathon anywhere in the world — all in one app.

MARATHON RACE FINDER
- Browse marathons from around the world in one place
- Search by race name, city, or country
- Filter by terrain: flat, rolling, hilly, or mountainous
- Spot World Major and EMC races at a glance
- See the race month for every marathon to plan your season
- Find a fast flat marathon for a personal record, or a hilly course for a challenge

MARATHON COURSE DETAILS
- Full elevation profile chart for every course
- Total elevation gain and loss before you commit to a race
- Exact race distance, plus start and finish locations
- Course difficulty at a glance: hairpin and sharp-turn counts
- Direct link to each official marathon website for registration
- Marathon information across Europe, Asia, Africa, and the Americas
Marathon races are available now, with more race types coming soon.

RUNNING PACE CALCULATOR
- Calculate your pace per km or mile for any race distance
- Convert marathon, half-marathon, 10K, and 5K times into pace
- Get your speed, splits, and VDOT running fitness score instantly

RACE TIME PREDICTOR
- Predict your finish times across every standard distance from one recent result
- Proven models: Riegel, VDOT, and weight-adjusted prediction
- See how a change in body weight could affect your potential race times

SWIMMING PACE CALCULATOR
- Compute your swim pace per 100m or 100 yards
- Convert times for pool and open-water events
- Track your swimming splits and predict race outcomes

CYCLING SPEED CALCULATOR
- Get your cycling speed in km/h or mph
- Convert times for any route or distance
- Forecast your performance in cycling races

TRIATHLON PACE CALCULATOR
- Full multi-sport pace tool for triathlon training
- Predict race times from Sprint to Ironman
- Plan your swim, bike, and run splits together

MORE TOOLS
- Pace Percentage Calculator — adjust your pace by percentage for interval training
- Grade Pace Calculator — adapt your pace for uphill and downhill segments
- VDOT Calculator — your running fitness score and matching race times
- BMI Calculator — monitor your Body Mass Index
- Ideal Weight Calculator — recommended weight based on height and body type

PERFECT FOR
- Finding your next marathon race
- Choosing a marathon course that matches your goal time
- Marathon and race pace strategy
- Pool and open-water swim timing
- Cycling speed and performance
- Triathlon race planning

Whether you're searching for your next marathon, studying a race elevation profile, or dialing in your goal pace, Zulau puts race discovery and pace calculation in one app.

Download Zulau now to find your next race, fine-tune your pace, and chase your next personal record.

Recent changes:
- Improved app stability.
- The marathon list is now dynamic and updates automatically.