A half marathon training app for your running week

Choose Work toward Half marathon in setup. Add an event date if you have one, or continue without a date. Choose the days you can run, a preferred longer-run day, and time limits for usual and longer sessions.

Those limits describe calendar space. They do not establish your current capacity or require every session to fill the available time. Recent running, health answers and recovery still shape the preview.

Check the setup summary before opening the preview. Your first proposed run has a date, total duration, effort, structure and purpose. Nothing enters Plan until you accept.

Walk through first-plan setup · Understand the plan review and acceptance process.

VOXX’s half-marathon build requires an established, confirmed recent running history, enough preparation time and room for the longer sessions. Your own estimates can support a cautious foundation, but do not by themselves establish eligibility for a race build.

If the current history, available days or longer-run time do not support the build, the preview explains the foundation phase. A nearby race does not make VOXX compress missing preparation into the remaining weeks.

No date yet is fine. Race-specific phases and tapering need an event date. Weekly reviews keep that date fixed unless you choose to change it.

If you have reviewed a usable personal pace reference, eligible sessions can show pace guidance. Otherwise they use effort guidance. Choosing Half marathon alone does not produce a predicted finish time.

The accepted session’s timer and spoken cues guide its steps. Check how you feel before starting, then record effort and pain afterward so the next review has current context.

Explore guided sessions · See the optional strength workflow.

In Plan → Manage plan, Review next 4 weeks brings together available recorded training, current feedback and proposed changes. Later weeks stay provisional. New imports do not silently replace an accepted calendar.

Use Change this week for a temporary availability change. Preview the affected dates and any strength changes, then accept only if the proposal fits. A requested move can be ruled out by the plan’s limits.

If a run looks missing, check its record and import status first. A past skip does not become an extra session, and an interruption does not automatically move your event date. You can keep the current plan, accept eligible changes or pause for a longer break.

See schedule changes and plan pauses · Review a missed-run decision · Put recovery scores and check-ins in context.

VOXX can fit adult runners who want to inspect a half-marathon plan, follow its sessions and review changes as their circumstances evolve. Access is by invitation through Apple TestFlight on iPhone with iOS 18 or later. A wearable is optional.

The app does not certify race readiness, predict a finish time, replace an individual professional programme or guarantee injury prevention. The professional-coach approach requires your coach to review each preview. Injury-related return follows a separate workflow.

Just beginning? The beginner running page explains run/walk starting points. Event preparation helps organise practical details, with its own limits.