Split Second vs MarathonOS

Split Second is a powerful timing app designed for cross country coaches to track runner splits during races. KEY FEATURES: • Single stopwatch controls timing for all runners • Record individual split times with millisecond precision • Configurable splits (1-8 per runner) for any race distance • Manage multiple rosters (Varsity Boys, Girls, JV, etc.) • Quick roster loading for race day efficiency • Export race results as PDF reports • Compact, mobile-friendly interface optimized for outdoor use • Works completely offline - no internet required • Delete individual runners for

YOUR RACE DAY, WORKED OUT IN ADVANCE Training is hard enough. MarathonOS keeps the countdown, travel details, checklists, pacing, fueling, weather, race-day updates, and post-race notes in one place. TODAY'S BRIEF Open the app and see what needs attention now: days to go, key dates, preparation progress, race-day weather, your next checklist item, fuel plan, and goal verdict. KNOW WHERE YOU STAND Import runs automatically from Strava, Garmin, or Apple Health. MarathonOS turns them into a clear readiness score, training-load trends, heart-rate zones, a training heatmap, route history, and race predictions. Set a goal time to see an honest range, your late-run fade, and what could move the verdict. PLAN YOUR PACE AND FUEL Build a mile-by-mile or kilometer-by-kilometer pace band from your goal, distance, and strategy. Add a fueling timeline so every gel, drink, and timing cue is decided before the start. KEEP EVERY DETAIL TOGETHER Track flights, hotels, parking, bib pickup, expo hours, start-line directions, and other key dates. Build reusable checklists for gear, nutrition, travel, and race morning, with due dates that keep preparation moving. RACE DAY ON YOUR HOME AND LOCK SCREEN Your race sits on your Home Screen, so you can plan for the weather and see how many days are left. On race morning, your Lock Screen gets you to the start with every reminder you set, like when to leave and where to drop your bag. It even remembers where you're meeting your people after the finish. Once you're running, your paces are displayed so you stay at your goal pace. With Premium, you'll also see your splits and when to take each gel. On iPhone Duo MarathonOS adapts to all screen sizes for a beautiful viewing experience. REMEMBER THE WHOLE RACE Save your result, splits, route, race-day conditions, notes, and what you would change next time. Race history keeps every finish and reflection together across seasons. FREE ON YOUR FIRST RACE Creating races and connecting wearables are free. For the first race you add, unlimited checklists, travel and logistics, and that race's report are all included at no cost. Premium adds fueling, pace bands, goal analysis, advanced readiness analytics, and unlimited checklists, logistics and race reports across every race. Choose monthly or annual, each with a 7-day free trial. Prefer one race cycle? Race Block provides 20 weeks of premium access and does not renew itself. Prices are shown in your local currency before you buy. Readiness scores, predictions, and goal analysis are informational and are not medical advice or a substitute for a coach. Terms of Use: https://www.42cal.com/terms Privacy Policy: https://www.42cal.com/privacy-marathonos