Why is it der Jogger?

Jogger ends in -er, and most nouns ending in -er are masculine: in a German dictionary, 86% of them take der.

All nouns ending in -er
Sense 1
der

Meaning

[1] person who exerts the sport of jogging

[1] Person, die die Sportart Jogging ausübt

Examples

[1] "Many joggers already feel a pull in the lungs with slight minus degrees because the bronchi are closer together"

[1] „Viele Jogger spüren bereits bei leichten Minusgraden ein Ziehen in der Lunge, weil sich die Bronchien stärker zusammenziehen.“

[1] "A jogger comes towards us"

[1] „Ein Jogger kommt uns entgegen.“

Declension

1 Singular Plural
Nominativ der Jogger die Jogger
Genitiv des Joggers der Jogger
Dativ dem Jogger den Joggern
Akkusativ den Jogger die Jogger

Pronunciation

Dictionary entries include material from Wiktionary. Wiktionary