Size It Up

ALL ANSWERS · MIXED · DAILY No. 13 · SEPTEMBER 16, 2026

Size It Up answer: September 16

The five Mixed silhouettes for September 16, with the true sizes. If you have not played yet, this page is a spoiler — play these five first, then come back to argue with the numbers.

Day 13 ran from a soccer ball (22 cm) to the Grand Canyon (446 km). The widest gap was round 3, Boeing 737 against Colosseum, at 4.8×; the closest call was round 4, Great White Shark against Giant Manta Ray, only 1.6× apart — the kind of round that separates a 90 from a 60.

  1. ROUND 1

    Interior Door (US) vs Walrus (Bull)

    Walrus · reference · 3.2 m
    Interior Door · true height · 2.03 m

    1.6× shorter than the walrus

    A standard interior door is 2.03 m tall — 80 inches.

  2. ROUND 2

    Soccer Ball vs Golden Retriever

    Golden Retriever · reference · 1 m
    Soccer Ball · true diameter · 22 cm

    4.5× shorter than the golden retriever

    A size-5 football is about 22 cm in diameter (about 70 cm in circumference).

  3. ROUND 3

    Boeing 737 (737-800) vs Colosseum (long axis)

    Colosseum · reference · 189 m
    Boeing 737 · true length · 39.5 m

    4.8× shorter than the Colosseum

    A 737-800 is 39.5 m long — about three school buses.

  4. ROUND 4

    Great White Shark vs Giant Manta Ray

    Giant Manta Ray · reference · 7 m
    Great White Shark · true length · 4.5 m

    1.6× shorter than the giant manta ray

    A great white shark is typically 4.5 m long — about a family car.

  5. ROUND 5

    Grand Canyon (river length, schematic) vs Danyang–Kunshan Grand Bridge (total length, schematic)

    Danyang–Kunshan Grand Bridge · reference · 164 km
    Grand Canyon · true length · 446 km

    2.7× longer than the Danyang–Kunshan Grand Bridge

    Measured along the Colorado River from Lees Ferry to Grand Wash Cliffs, Grand Canyon is about 446 km long.

Beat these tomorrow

Every round is worth up to 100 points: within 6% of the true size scores 100, half or double scores 45, five times off scores zero. The daily puzzle is the same five for everyone and refreshes at midnight in your time zone; if you want more than five, Size It Up Unlimited draws fresh pairs from the whole library for as long as you like.

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MixedAnimals, planets and everyday things. AnimalsLength, height or wingspan — every round names the axis. GeographyEast–west or north–south span, never area. Pop CultureCheck the version. Compare the measured dimension. VehiclesLength end to end, or height for the ones that stand upright. DinosaursCompare estimated body length, from snout to tail tip. SpaceCompare body diameter. Rings and orbital distances are excluded. Everyday ObjectsLength, height or width — every round names the axis. InsectsBody length or wingspan — read the named measurement. LandmarksRead the named height, length or main span — including its endpoints. Food & DrinkRead the selected size and axis — length, diameter or container height.
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