How long do Spanish extradition proceedings typically take from arrest to final decision?

For European Arrest Warrants, Spain must reach a decision within 60 days of arrest, extendable to 90 days in complex cases. Non-EU extradition proceedings are significantly longer, typically lasting 6 to 18 months depending on case complexity and whether appeals are filed. The initial Audiencia Nacional hearing usually occurs within 15 days of arrest. Appeals to the Supreme Court add 3 to 6 months. During this period, defendants may remain in provisional detention or be released on bail with conditions such as passport surrender and periodic court appearances.