geolook/database/factories/LocationFactory.php

<?php

use Carbon\Carbon;
use App\Location;
use Faker\Generator as Faker;

$factory->define(Location::class, function (Faker $faker) {

    $lat = 36.16310;
    $lng = 49.94950;
    $latArray = [];
    $lngArray = [];
    for ($i=0; $i<10; $i++){
        $latArray[] = $lat;
        $lat += 0.13733;
        $lngArray[] = $lng;
        $lng += 0.00715;
    }

    return [
        'lat' => array_random($latArray),
        'lng' => array_random($lngArray),
        'created_at' => Carbon::now()->subDays(rand(1, 10)),
        'user_id' => null,//
    ];
});