How long is a half marathon?

21.0975 km. At 6:15/km that is about 2:11; at 5:30/km about 1:56.

Will the elevation profile look right?

Elevation comes from terrain data along your drawn route, so hills appear where the roads actually climb.

Uploading generated activities can violate Strava's terms. Use it for testing, demos, or a genuinely lost week — and at a pace you actually run.

TEMPLATE

21.1 km is where fake runs usually fall apart: flat pace, no drift, no pauses. This template presets a realistic profile so yours does not.

Three realistic profiles. Each link opens the builder with the target pace preset — you only draw the route.

Choose a pace above. The builder opens with that target pace and a distance hint.
Draw a route of roughly that distance; points snap to real roads and the distance counter updates live.
Optionally add heart rate, cadence, and a watch profile (Pro).
Download the TCX and upload it on strava.com via Upload activity.

Draw a course a real event would use: wide roads, long loops, few tight turns.
Let the pace drift slower after 15 km; the builder's variation setting does this for you.
Add heart rate (Pro) — a half marathon without HR on a watch-recorded run looks odd.
Do not post a half marathon PR out of nowhere; build up over weeks like a real block.

Start from this template

Drawing and previewing are free. You pay only when you download the file.

How long is a half marathon?: 21.0975 km. At 6:15/km that is about 2:11; at 5:30/km about 1:56.
Will the elevation profile look right?: Elevation comes from terrain data along your drawn route, so hills appear where the roads actually climb.
Is this allowed on Strava?: Uploading generated activities can violate Strava's terms. Use it for testing, demos, or a genuinely lost week — and at a pace you actually run.