Visa extensions are obtained from DAS - www.das.gov.co
There are DAS offices in all the departmento capitals and all DAS offices can renew a visa. These days the centralised computer system means that renewing a visa is somewhat easier than before.
A visa extension can only issued 4 days in advance.
If your visa expires over a weekend you`ll be given the days grace to go in next Monday. If you visa expires over a fiesta weekend then you´ll be given until the Tuesday to go in.
30 Day extension - you`ll need two passport photos, copies of your passport with the entry stamp, the original plus a photocopy of the BANCAFE deposit slip - and possibly an onward ticket.
DAS Armenia Carrera 16 No. 14-56 Tel: 746 8520
DAS Barranquilla Calle 54 No 41-133 Tel: 341 1411
DAS Cartagena Calle 20B No 29-18 Tel: 666 0438
DAS Medellín Calle 19 No 80A-40 Tel: 341 5900
DAS Cali Avenida 3AN No 50N-20 Tel: 664 3809
DAS Manizales Calle 53 No 25A-35 Tel: 810 0600
WE SERIOUSLY RECOMMEND THAT YOU HAVE YOUR PASSPORT WITH YOU AT ALL TIMES DURING YOUR STAY IN COLOMBIA.
A PHOTOCOPY OF THE PHOTO PAGE OF YOUR PASSPORT TOGETHER WITH A PHOTOCOPY OF YOUR COLOMBIAN ENTRY STAMP SHOULD BE SUFFICIENT FOR DAY EXCURSIONS BUT DO NOT TRAVEL WITHOUT YOUR PASSPORT.