Macro Lap is a Connect IQ data field that adds virtual "macro laps" for Backyard Ultra while keeping Garmin micro laps untouched.

• Macro starts automatically at activity start (Macro Lap 1).
• Double-lap press (two lap events within the threshold) starts the next macro at the second press.
• Single lap presses remain normal Garmin laps and are recorded as usual.

The data field shows:

• Macro lap number
• Macro elapsed time
• Macro average pace (M:SS per mi/km)
• Time left to the target loop time
• Macro distance and distance left
• Projected full-distance time (PROJ)

Settings are available in Garmin Connect Mobile / Express:

• Enable custom targets (default off)
• Target time minutes/seconds
• Target distance (x1000, e.g. 4167 = 4.167)
• Target distance unit (miles/km)
• Double-tap threshold seconds

Defaults: 59:59, 4.1666666667 mi, 3 seconds.

Early mobile preview install:

• From your phone, open this Connect IQ app listing to install early preview builds: https://apps.garmin.com/apps/c0891461-7d02-498f-9697-ae50f2819938

1. Open the project in the Connect IQ SDK.
2. Build and install the data field to your watch.
3. Add the data field to an activity screen.

You can also build from the terminal:

make

Optional overrides:

make DEVICE=fenix7_sim
make SDK_ROOT="~/Library/Application Support/Garmin/ConnectIQ/Sdks/connectiq-sdk-mac-8.4.0-2025-12-03-5122605dc"

By default, the Makefile reads ~/Library/Application Support/Garmin/ConnectIQ/current-sdk.cfg to find the active SDK.

Start the Connect IQ Simulator first, then run:

make sim DEVICE=enduro

To start the simulator from a terminal (and see logs/crash output), run:

make sim-console

Build a signed .iq package:

make package DEVICE=enduro DEV_KEY="$HOME/Library/Application Support/Garmin/ConnectIQ/keys/developer_key.der"

make package creates an export package for dashboard upload and validates that it is a real .iq bundle.

If you only want a local signed artifact (not for dashboard upload), use:

make package-local

Install the .iq using Garmin Express or the Connect IQ mobile app (developer mode):

make install

The compiler requires a developer key. You can generate one locally:

make key

This writes developer_key.der to ~/Library/Application Support/Garmin/ConnectIQ/keys/ and will copy it to the path set in DEV_KEY (from .envrc) if different. Then build:

make

Start your activity and run as normal. At the loop start, double-press Lap within the threshold to begin the next macro lap. The field will flash "MACRO START" for ~2 seconds to confirm the marker.