Size It Up

ALL ANSWERS · GEOGRAPHY · DAILY No. 15 · SEPTEMBER 18, 2026

Size It Up Geography answer: September 18

The five Geography silhouettes for September 18, 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 15 ran from Aruba (21.23 km) to Russia (8,197 km). The widest gap was round 1, Mexico against Afghanistan, at 2.5×; the closest call was round 4, Pennsylvania against Great Bear Lake, only 1.5× apart — the kind of round that separates a 90 from a 60.

  1. ROUND 1

    Mexico vs Afghanistan

    Afghanistan · reference · 1,296 km
    Mexico · true width · 3,177 km

    2.5× wider than Afghanistan

    Mexico extends about 3,177 km east to west across this outline.

  2. ROUND 2

    Aruba vs Isle of Man

    Isle of Man · reference · 38.8 km
    Aruba · true height · 21.23 km

    1.8× shorter than the Isle of Man

    Aruba extends about 21 km north to south across this outline.

  3. ROUND 3

    Russia vs Argentina

    Argentina · reference · 3,695 km
    Russia · true width · 8,197 km

    2.2× wider than Argentina

    Russia extends about 8,197 km east to west across this outline.

  4. ROUND 4

    Pennsylvania (US state) vs Great Bear Lake

    Great Bear Lake · reference · 338.5 km
    Pennsylvania · true width · 494.4 km

    1.5× wider than Great Bear Lake

    Pennsylvania extends about 494 km east to west across this outline.

  5. ROUND 5

    Issyk-Kul vs Costa Rica

    Costa Rica · reference · 365.9 km
    Issyk-Kul · true width · 171.1 km

    2.1× shorter than Costa Rica

    Issyk-Kul extends about 171 km east to west across this outline.

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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