It will take you at least 6 months for Silver if you’ve already achieved your Bronze, or 12 months if you’ve jumped straight into Silver.  You must be aged 15+.

– Volunteering section: 6 months
– Physical and Skills sections: One section for 6 months and the other section for 3 months
– Expedition section: 3 days/2 nights

If you didn’t do Bronze, you must undertake a further 6 months in either the Volunteering or the longer of the Physical or Skills sections.