Gyms on the map: over 3100 fitness centres in Finland, from chains to municipal halls, by municipality. Free, no login and no paywall.
3 122 places in
The map shows 245 gyms in Helsinki. This is the number of places in this service, not an official total for the municipality.
213 places have parking within 500 metres (typically 80 m) and 198 places have a bus stop nearby (typically 125 m). Distances are measured to the nearest parking area and bus stop marked on the map.
ELIXIA Citycenter / Kuntokeskus is right in the city centre. The farthest is about 18 km away.
Diakoniaopisto / liikuntasali, Haagan pelastusasema / Liikuntasali, Kerhotalo Saseka / Monitoimisali, Olympiastadion / Liikuntasali 2. These have their own description, a photo or a Wikipedia article, so the place page offers background beyond the location alone.
On the place's own page. 182 places in Helsinki have a link to their own website and 141 have a phone number. The most up-to-date information is always on the place's own site.