Race Optimizer
Know where your next minute comes from.
RACO predicts your hybrid race time from your own numbers, shows exactly where the time to your goal is hiding, and builds the plan to find it.
For iPhone and Android. 8 × 1 km runs, 8 stations. Estimates, not guarantees.
Your goal gap, broken down
Not "train harder". Train where the time is.
RACO splits the gap to your target into the areas it can realistically come from, largest first. For our demo athlete, 4:34 to find:
Every number comes from RACO's race and goal engines. The rest of the gap is spread over the other stations.
What's inside
Everything between today and race day.
01
Race prediction
Your finish time split into every run, station and transition — with how confident it is and why. Compared with typical times for your category and age group.
02
Path to your target
Milestones from today to your goal, and the exact changes that get you to each one.
03
Simulator
"What if my sled push was 20 seconds faster?" See the new finish time instantly.
04
Coach-built training plan
Built from a qualified coach's program, on the days you choose, starting when you want — with the exact exercises, sets, reps and paces.
05
Progress & weekly review
Log workouts and tests; see what moved your prediction and what to focus on next week.
06
Weeks that adapt Pro
Each next week reacts to how the last one went — sessions missed, effort, your notes — and never piles on "make-up" work.
Inside the app
Your race, your gap, your plan.
Demo athlete. Your numbers come from your own results.
First race?
Get ready to finish — confidently.
No times needed to start. Answer a few simple questions and RACO gives you a likely finish range, readiness steps and the stations to prepare most.
- Run 5 km without stopping
- Half simulation — 4 × (1 km + a station)
- Run 8 km in total, breaks allowed
- Complete every station at race standard, with a guide for each
- Full simulation
Race day
A clock time for every run and station.
Your pacing plan says where you should be on the race clock after each segment — plus how fast run 1 may go and when the sleds will bite. Afterwards, log the result and see where the time went.
| Run 1 | 4:51 |
| Ski | 9:57 |
| Run 2 | 14:54 |
| Sled push | 18:49 |
Free & Pro
Free to start. Pro when you want more.
Free
- Race prediction, goal gap and path to your target
- Race-day pacing plan
- Your first training session, from the coach's program
- The simulator during your first week
- Workout log, progress and weekly review
- First-race mode
Pro monthly or yearly
- Every next training week, adapted to how your last week went
- Tell it about a busy week, travel or sore legs — the week fits
- AI coach: ask about your own numbers
- Race simulator: test any what-if, save every scenario
Prices are shown in the app in your currency. Billed by the App Store or Google Play; cancel any time in your store account.
Invite friends with your personal code: every 5 friends who subscribe earn you a free month of Pro (up to 6 a year). Terms
Find your next minute.
Free to start on iPhone and Android. Your prediction is ready in a few minutes.