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Comment by helsinkiandrew | Hacker News Reader

Cruising speed of Charles de Gaulle is 27knots which would give the runner a pace of around 1:10mins/km depending on direction. That would really screw up your Strava stats

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I occasionally see civilians on Strava doing the same thing, running laps around the deck of a cruise ship. The speeds and distances look ridiculous.

101 assumptions programmers make about running apps.

23: The ground beneath the runner's feet has stable lat/lon.

There is no meaningful solution to this.

You could compare phone and watch coords assuming phone can be left in one spot.

There is no meaningful solution to this, besides just this one exception.

So I'm actually confused that in the little image of his run in the article it seems he's often making absolute progress in the opposite direction the ship is going for part of each lap. Like, was the ship going unusually slowly?

His pace was 4:38 over 7.2km and his track seems to backtrack at times so either the carrier was doing weird maneuvers or he is running faster than they are carrier.

I imagine they are in no rush to get closer to Lebanon. So maybe they are running in circles

He's running laps while the ship is moving. The little circles is him backtracking against the direction of the ship. It seems to me the ship is just going in a straight line.

Yep, that looks like a paraglider circling in a thermal while being drifted due the wind.

Random tracklog example: https://www.xcontest.org/world/en/flights/detail:mattmozza/2...

(zoom in until you see circles on the track line)

Reminds me of Fitbit using heartrate to approximately guess calories used.

I'm told with a lengthy night on uppers can you can get your 24/hr burn up to the 7000-10000.

I was doing support for a fitness data aggregator where a partner reported an issue: a user logging 15k+ steps between 9pm and 4am with minimal location delta. Sadly I wasn't able to push a "stay hydrated" notification over our system to the user.

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