Half Marathon Training

Your half marathon PR
is within reach.

Signal reads your recovery data, tracks your race calendar, and coaches you toward sub-2 — or whatever goal you have circled. Every day. Based on your actual numbers.

1,200+ runners already on the list

Built for race-focused runners.

Know when to push, when to hold

Signal reads your HRV and sleep every morning. On days your body is primed, it tells you to go hard. On recovery days, it tells you why backing off is the smarter move — and what you're protecting.

16-week race timeline, always updated

Signal counts backward from your race date and builds your training arc in real-time. Missed a long run? Life happened? It recalculates — no rigid plan that falls apart after one bad week.

Sub-2 projection with real data

Ask Signal "am I on track for sub-2?" and get a real answer — not a vague hedge. It looks at your recent paces, heart rate trends, training load, and weeks remaining. Specific. Honest. Actionable.

Post-run analysis after every Strava upload

Every run you log gets a Signal breakdown — effort vs. plan, pace vs. heart rate, what it means for race readiness. Not just stats. Coaching context after every session.

Common goals

Signal knows your target.

Sub 2:30

First-timer finish

Sub 2:00

Milestone breakthrough

Sub 1:45

Competitive runner

Sub 1:30

Elite amateur

Tell Signal your target time. It builds backward from race day to tell you exactly what it takes.

Common questions.

Do I need a WHOOP or Oura Ring?

Signal works with WHOOP, Oura Ring, Garmin, and Apple Watch. If you don't have a wearable yet, Strava alone gives you activity-based coaching — the recovery layer unlocks when you connect a device.

What if I'm following a Runna or TrainingPeaks plan?

Signal works alongside your existing plan. It tells you when the day's prescribed workout is a good match for your body's state — and when you might want to swap a hard session for an easy day.

How far out should I start using Signal before my race?

12–16 weeks is ideal. That gives Signal enough data to understand your patterns and give you meaningful race projections. Starting 4–6 weeks out still works — you'll just have less historical context.

Is this useful for first-time half marathoners?

Yes. Signal explains what the data means in plain language. You don't need to understand HRV or lactate threshold — Signal translates it into: 'Today is a good day to do your tempo. Here's why.'

Get early access

Race day is coming.
Are you ready?

Join the waitlist. Signal is in private beta — we're onboarding runners with a goal and a race on the calendar.