gistfile1.sh

arnar@air:/tmp$ cat lennartsurl.json
{"totalPoints":14395,"version":1,"rounds":[["round","lat","lng","gLat","gLng","cLat",[null],"cLng",[null],"points"],[1,53.774101,87.18442600000003,46.07323062540838,4.21875,0,0,1337],[2,-31.704593,137.22421099999997,-26.431228064506424,132.890625,0,0,2296],[3,46.165393,14.310496999999941,47.754097979680026,14.58984375,0,0,2845],[4,22.218447,114.211588,22.375476015564765,114.1534423828125,0,0,5210],[5,-15.780246,-47.92931199999998,-13.923403897723334,-49.21875,0,0,2707]],"isChallenge":false,"challengeScore":null}

arnar@air:/tmp$ for url in $(cat lennartsurl.json \
  | jq -r '.rounds[1:][] | @uri "http://maps.googleapis.com/maps/api/geocode/json?latlng=\(.[1]),\(.[2])&sensor=true"'); do \
     curl -s $url | jq '.results[0].formatted_address'; \
done

"ulitsa Vodopadnaya, Novokuznetsk, Kemerovo Oblast, Russia, 654000"
"Stuart Highway, Mount Gunson SA 5710, Australia"
"Studenec 11, 4220 Škofja Loka, Slovenia"
"5 Stanley Main Street, Stanley, Hong Kong"
"Estrada Parque Contorno do Bosque - Cruzeiro, Brasília - Federal District, Brazil"

arnar@air:/tmp$  # And now your guesses:
arnar@air:/tmp$ arnar@air:/tmp$ for url in $(cat lennartsurl.json \
  | jq -r '.rounds[1:][] | @uri "http://maps.googleapis.com/maps/api/geocode/json?latlng=\(.[3]),\(.[4])&sensor=true"'); do \
     curl -s $url | jq '.results[0].formatted_address'; \
done

"L'Étang, 42460 Coutouvre, France"
"Pukatja Homeland SA 0872, Australia"
"Unterlaussa 75, 8934 Unterlaussa, Austria"
"Shing Mun Tunnel Road, Hong Kong"
"GO-151 - Amaralina - Goiás, Brazil"

arnar@air:/tmp$