Trail & ultra

From km0 to the finish line

The real race starts long before the gun: prep, gear, training, race day. One place for all of it, so you can stop juggling spreadsheets and just run.

Join the alpha

Gear · Training · Race day

Trail runner in mountains

Why KM0

The mess before the start line

Gear in a spreadsheet. Training in one app. Race briefs in PDFs. Crew instructions in WhatsApp or on scraps of paper. Nothing talks to anything, and race morning turns into a scramble.

We wanted one place where your list, your plan, and race day live together. So you can focus on the trail.

  • One place for mandatory kit, optional gear, and checklists
  • Share with crew and pacers so everyone knows what you need and when
  • Training and race-day tools are coming. Alpha runners are helping shape them
Gear and preparation

Gear

Lists that travel with you

One list per race or training block. Mandatory kit highlighted, optional gear listed. Check off as you pack so nothing gets left behind.

Share the list with your crew so they know what's in each drop bag and when to expect you at aid stations. Reuse lists for similar races. One source of truth.

  • One list per race or block. Reuse it for similar events
  • Mandatory vs optional at a glance
  • Share with crew. They see what you carry and where
Training and data Coming next

Training

Your data, your pace

We're building tools that use your trail data (volume, vert, pace) to suggest what to do next. Not generic plans: recommendations that adapt to how you actually run.

Alpha testers are helping us shape this so it fits real trail and ultra training.

  • Import or connect your activity data
  • Suggestions based on load, recovery, and upcoming races
  • Built with alpha runners so the logic matches how you train
Race day, finish line

Race day

From bib to finish

On race morning you know what's in each drop bag and what you're carrying. Your crew knows when to expect you and what you need at each aid station.

Timing and pace notes let support track your progress. Export or share your plan so they have everything on their phone.

  • Drop-bag lists per aid station. Clear for you and crew
  • Timing and pace notes so crew can track you
  • Export or share. Support has the full picture

Who it's for

Built for people who run long

Ultra runners, stage racers, anyone training for long trail efforts. If you care about gear, data, and showing up prepared, and you're tired of duct-taping spreadsheets and apps together, KM0 is for you.

Join the alpha

We're opening KM0 to a small group of trail runners. Early access, a direct line to the team, and your feedback shapes the product. We ask for honest feedback and real-world use.

We read every response.