RunBikeHike Tools
15 free calculators, timers, and field tools for runners, cyclists, and hikers.
Every single one works completely offline — no signal needed.
Everything You Need on the Trail
15 tools, zero fluff. Tap what you need and get the answer.
🏃 Running
Pace Calculator
Distance + time → pace, with 5K, 10K, half, and full marathon presets
Race Predictor
Forecast your 5K through marathon times from any recent race result
Interval Timer
Work/rest cues with sound and vibration — custom presets included
🚵 Biking
Speed · Distance · Time
Solve for any one variable when you know the other two
Tire Pressure Guide
Your weight, tire width & surface → recommended front and rear PSI
Gear Ratio Calculator
Ratios, gear inches, and speed at any cadence for your drivetrain
🥾 Hiking
Hiking Time Estimator
Distance, climb & pack weight → realistic duration using Naismith's Rule
Turnaround Alarm
Sunset-aware "turn around now" time so you never get caught in the dark
Compass
Real sensor heading — works with zero cell signal, no internet required
Knot Guide
Step-by-step diagrams for essential outdoor knots, fully offline
Flashlight & Strobe
Steady, strobe, and SOS beacon modes — red mode preserves night vision
Pack Weight Checker
Pack weight as % of body weight + 10 Essentials checklist
📊 Every Activity
GPS Track Recorder
Live map, distance, pace & elevation — recording works with zero signal
Hydration Planner
Duration, temp & exertion → exactly how much water to carry
Calorie Burn & Heart Rate Zones
MET-based calorie estimates and 5-zone heart rate calculator
Works Anywhere. Literally Anywhere.
No cell signal in the backcountry? No Wi-Fi at the trailhead? Doesn't matter. Every tool in RunBikeHike Tools is fully offline — downloaded once, runs forever, no data connection ever required.
Trail Pro
Built by RunBikeHike.us
The same practical approach that guides over 3,000 trail guides on the website — now in your pocket.
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