Step 2 of 4

Put Cape Ride on your home screen.

Not optional, and not vanity: from the home screen the app keeps its own location permission, fills the whole screen, and can't swipe backwards out from under you mid-ride.

Come back here once it's added — the app will pick up where you left off.

Step 3 of 4

Cape Ride needs your location — but only when you check in.

• ✓When you tap check in One reading, at that moment, to prove you were there.
• ✓Briefly when you open the app So it can tell you're standing at a venue before you tap.
• ✕Never in the background Close the app and Cape Ride stops knowing where you are. Full stop.
• ✕Never a live map of you Other riders see your score. They never see where you are.

Step 3 of 4

Your phone is blocking location for websites.

Common, and easily fixed — many people switched this off years ago and forgot. Here's the path:

Step 4 of 4

Let's make sure it actually works.

Checking that your phone can find you. Standing near a window helps if you're indoors.

You're set.

Nothing else to do until October 10. Open Cape Ride from your home screen that morning and check in where the trail meets Depot Road in Harwich.

On the day: check in at least every 30 minutes, report your total miles each time, and keep your receipts. That's the whole job.