SELECT id, ort, fachwort, ( 6368 * SQRT(2*(1-cos(RADIANS(lng)) * cos(0.20376595687038) * (sin(RADIANS(lat)) * sin(0.83375375347687) + cos(RADIANS(lat)) * cos(0.83375375347687)) - sin(RADIANS(lng)) * sin(0.20376595687038)))) AS entfernung FROM literatur WHERE 6368 * SQRT(2*(1-cos(RADIANS(lng)) * cos(0.20376595687038) * (sin(RADIANS(lat)) * sin(0.83375375347687) + cos(RADIANS(lat)) * cos(0.83375375347687)) - sin(RADIANS(lng)) * sin(0.20376595687038))) <= 25 ORDER BY entfernung