Get your fuel, salts and pace right, all the way to the line.
Sub24 plans your carbs, fluid, sodium and caffeine hour by hour, paces you over every climb and descent (not just the flat bits), and keeps your aid stations, drop bags and crew in sync. Chasing a sub-24 finish is one goal it can help with, mostly it just gets you to the line in one piece.
Ultra Scotland 100
Every climb and descent modelled from the real GPX, with a pace for each leg and your aid stations and crew points marked. The gold-to-indigo line is the sun: sub24 knows exactly where 100 miles runs into the night and back out into the dawn, paces for the dark hours, and tells your crew when to have the head torches ready. Hover the line to read it off.
66g carbs · 90mg sodium · 0ml fluid2× Drink mix 320500 ml bottle
80g carbs · 600mg sodium · 1000ml fluid1× Caffeine gel1 gel · 100 mg
22g carbs · 40mg sodium · 0ml fluid · 100mg caffeine1× Salt cap1 capsule
0g carbs · 300mg sodium · 0ml fluid
Carbs, salt, caffeine
Hourly carbs, fluid, sodium and caffeine, turned into exactly what to eat and drink at each aid station.
Everyone in sync
What's at each aid station, where your drop bags are, and when your crew need to be there.
Know you're ready
One honest number that folds in your training, the route's climbs, and your fuelling plan.
Route data is real (Ultra Scotland 100, GB Ultras); other figures are illustrative.
Coach? Bring your whole roster.
Each runner hands you a 6-digit code, and their whole racing world opens up: switch into their view and build races, tune plans and stock their fuel pantry exactly as if you were them, while everything stays theirs.
- Every runner’s races on one calendar, multi-day ultras included
- A “needs attention” list: who to chase, before it’s urgent
- Create, edit and lock race plans on your athletes’ behalf
- Runners stay in control: one coach, revoke access any time
Not just for the mountain goats.
First marathon? Pancake-flat 50k? A half you actually want to fuel properly for once? Skip the GPX entirely: tell the simple builder your distance and rough pace and it hands you a clean hour-by-hour eating and drinking plan in about a minute. No checkpoints, no elevation homework, no PhD in sports nutrition. The deep route tools will be waiting when the mountains start calling.
Race bank
Clone real courses, checkpoints and cutoffs included. No GPX faff.
Night pacing
Sunset-aware ETAs with a night penalty, so the dark hours don't wreck the forecast.
Multi-day ready
Spine-length events span their real days on the calendar, cutoff windows and all.
Laps & backyards
Loop formats, last-one-standing rules and lap projections, not just point-to-point.
Plan lock
Freeze the plan of record for race week; the crew sheet stops shifting under you.
Recaps that learn
Log how it actually went and your next plan starts from what worked.
Add your race
Drop a GPX or search the route. We read the climbs, distance, cutoffs and aid stations.
Get your plan
An hour-by-hour fuelling and hydration plan, plus a pace for every climb and descent.
Run it with your crew
Tick off aid stations, watch the buffer, and share a live sheet with your crew and pacers.
Your next ultra, planned today
Runner or coach, it takes a couple of minutes to add a race and see the whole plan: fuelling, hydration, pacing, crew, day and night.