Here are some popular places to rent bikes:
Baisikeli
Turesensgade 10 – 1368 Copenhagen K. – Mobile: +45 26 70 02 29
Baisikeli has set up a project where they collect used bicycles in Denmark and send the bicycles to Africa for helping provide better transportation. They finance to project through renting out some of the bicycles that they collect.
København Cyklebørs
Gothersgade 157 – 1123 Copenhagen K – Phone: +45 33 14 07 17
Founded in 1881, this is a bicycle renting company that rents 3 speed bikes, tandems, mountain bikes, and trailers.
Rent-A-Bike
The largest bicycle renting Copenhagen. They sell, rent, and repair bikes.
They have two bike shops:
København Cykler
11 Reventlowsgade
1651 København V
+ 45 33 33 86 13
Østerport Cykler
10 Oslo Plads
2100 København Ø
Phone: +45 33 33 85 13