# Using the Race Day Page

## Overview

The Race Day page is designed for athletes and crew to manage and update their race plan in real time during the event. It provides a live, editable version of your exported race plan, optimized for mobile and outdoor use, while preserving your original plan as a locked baseline.

---

## How to Activate Race Day

1. **Create or load a race plan** in RaceCraft.
2. Click the **"Export to Race Day"** button within your plan.
3. A new Race Day page is generated as a duplicate of your current plan.
4. Access the Race Day page anytime from the main side navigation.

---

## Race Day Page Features

- **Mobile-first layout:** Designed for easy one-handed use and high visibility outdoors.
- **Editable checkpoint times:** Tap arrival or departure times to update them as you progress.
- **Live recalculation:** All timing, cumulative time, and finish ETA update instantly after edits.
- **Checkpoint cards:** Each checkpoint is shown as a card with all relevant details.
- **Persistent navigation:** Race Day is always available in the side-nav for quick access.
- **Crew-friendly:** Allows crew to update times and monitor progress.

---

## Editing Arrival and Departure Times

- Tap the arrival or departure time on any checkpoint card.
- Enter the actual time using the mobile-optimized input.
- The app will automatically recalculate:
  - Time spent at the checkpoint
  - Updated cumulative race time
  - New estimated finish time
- All downstream checkpoints update dynamically.

---

## Empty State

If no Race Day plan has been exported yet:
- The Race Day page will show a message: "No Race Day plan created yet. Generate and export a race plan to activate Race Day."
- Click the call-to-action button to return to plan creation/export.

---

## Key Tips

- **Original plan is preserved:** Edits in Race Day do not affect your baseline plan.
- **Responsive design:** Works on phones, tablets, and desktops.
- **Fast editing:** Large tap targets and minimal clutter for quick updates.
- **Crew access:** Share your device or login for crew to update times.

---

## Troubleshooting

- If you can't see the Race Day page, ensure you've exported a plan.
- For best results, use Race Day on a mobile device during the event.
- If you need to revert, reload your original plan from the main planner.