Tactical Analysis Engine
Hit your target time
with a plan you can trust.
We use this to anchor <br/> your metabolic potential.
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Live Tactical Preview
Technical
UTMB 100M
171km · 10000m+ · Technical
Finish ETA
29h 32m
Finish Confidence
95%
Finish Confidence95%
Key Tactical Risks
!"Lung Buster" (Steep 184m/km) — Hard cap on effort, mandatory power-hiking.
!"Supply Desert" (No-aid Gap) — Max out your flasks, double your fuel pre-entry.
trailbook tactical poster v2.0
View Full Analysis →Race Library
Explore Global Classics
Select a course to preview tactical insights instantly above.
Preview
What you get
A plan built for race-day execution — not spreadsheets.
Export-ready poster
A single page you can screenshot, share, and print — designed to reduce last-minute decisions.
3 strategies (Safe / Steady / Push)
With clear finish ETAs.
Key checkpoint targets
Only the ones that matter.
Fueling baseline
Carbs / fluids / sodium per hour.
Risk callouts
Where most DNFs begin.
Designed for trust
Transparent assumptions. Adjustable knobs. No “black box”.
Transparent model
Pace + elevation + fatigue + stops.
Regenerate versions
After tuning coefficients.
Share links
With crew / pacers.
Server-side export
For reliable PDF layout.
Why it works
Built for execution, not just analysis
Know where to hike, where to protect your legs, and where to fuel early.
Grade-aware pacing
Adjusts pace for steep climbs and technical descents.
See the “pain curve”
See exactly where to run and where to hike.
Hit the cutoffs
Accurate ETA for every aid station.
Export that looks premium
HD PNG for sharing + print-ready PDF for your pack.
No spreadsheet paralysis
We don’t compete on route planning. We ship execution deliverables.
Personalized coefficients (Pro)
Up/down profile & preferences make the plan feel like it’s yours.
Workflow
From goal to execution in seconds.
No spreadsheets, no guesswork. Just a clear path to your finish line.
01
1. Set your goal
Pick a race and target time, or upload your own GPX file.
02
2. Get your plan
Instant checkpoint splits, fueling alerts, and risk analysis.
03
3. Execute
Download the tactical poster. Print it, wear it, run it.
FAQ
Questions, answered
Keep it simple.
Isn’t this the same as free race planners?
Free tools help you plan. TrailBook ships race-day execution deliverables: PacePro sync, fueling snapshots, and printable tactical guides.
How accurate is the ETA?
It’s a decision aid, not a guarantee. It’s based on transparent assumptions (pace + elevation cost + rest). You can adjust coefficients to match your running style.
Do you support ultra distances?
Yes — the output scales. From short trail races to 100-mile ultras, we focus on the decision-making data you need.
Is this official for UTMB / Western States / Hardrock?
No. Open courses are unofficial simulations for education and planning. TrailBook.run is not affiliated with any race organization.
Ready
Generate your race plan in minutes.
Free preview. Unlock export when you’re ready.