Own Your
Race Day
Race planning tools for trail and ultra runners. GAP calculations, crew sheets, and terrain analysis — everything you need to execute your race strategy.
by Prato Studios
Leadville 100
100 mi • 15,600 ft gain
24:30
Goal Time
14:42
GAP/mi
May Queen
Mi 13.5 • 10,200 ft
Outward Bound
Mi 23.5 • 9,200 ft
Twin Lakes
Mi 39.5 • 9,200 ft
Hope Pass
Mi 44 • 12,600 ft
GAP Calculator
Grade Adjusted Pace for every segment. Know your true effort on climbs and descents with terrain-aware pacing.
Crew Sheets
Generate detailed crew sheets with aid station ETAs, nutrition plans, and gear needs. Keep your crew informed and ready.
3D Terrain Analysis
Visualize every climb and descent with detailed elevation profiles. Study the course before race day.
Split Calculator
Set your goal time and get segment-by-segment splits adjusted for terrain, altitude, and your fitness.
Offline Ready
Download race data for offline access. Full course details available without cell signal on race day.
Built for Race Day
From trail marathons to 100-milers, Altitude gives you the tools to plan, prepare, and execute your best race.
Trail Marathon
50K Ultra
100-Miler
Multi-Day
Plan Your Next Race
Explore our race catalog and start building your race strategy. Free to browse, with premium features for race day.