Timeline, leg by leg
A full race timeline between aid stations: distance, D+/D−, terrain, effort, arrival clock, per-leg nutrition and notes. Expand a leg to fine-tune paces or jump to the map.

Trail running prediction time & pacing · GPX
Upload your GPX file to get a trail running prediction time, plan your pacing strategy leg-by-leg, optimize aid-station nutrition, and print your roadbook.

What you get
Plan in the workspace, replay on the map, then take it on race day, printed or on your phone.
A full race timeline between aid stations: distance, D+/D−, terrain, effort, arrival clock, per-leg nutrition and notes. Expand a leg to fine-tune paces or jump to the map.

Fly along your trace in 3D with playback and an elevation profile synced to planned times. Focus a leg from Plan and return with one tap.

Target finish, UTMB index or min/km per terrain. Your plan updates live across every tab.

Set hourly carb, fluid and sodium targets. Override per leg, plan what you grab at each aid station. You can use catalog items or your own, and see how much you still need to hit the leg target.

Your race-day companion: every leg, nutrition targets and checkpoint to-dos in one place.

Everything your team needs at each aid station: arrivals, cut-offs, services, paces and actionable checklists.

Get a highly visual carnet with detailed elevation profiles, slope gradients, and full nutrition checklists per leg.

Compare checkpoint passings across finishers, study pace fade from a LiveTrail link, and cross pre- vs post-race indexes to sharpen your strategy.

Sign in for free, upload your GPX and generate your roadbook in minutes.