How long can it take between the symptoms and rupture of a brain aneurysm?

Inmediate. Patients have symptoms immediately after rupture that range from intense headache up to coma depending upon the severity of the rupture and involvement of the brain and location of aneurysm.
Usually immediately . Brain aneurysms are usually asymptomatic until they rupture so the first time you know you have one is when it bleeds.
Seconds. The most common form of aneurysm is the berry aneurysm. This is usually from the deep structures of the brain and pours blood into the spinal fluid. Severe headache, nausea, vomiting, and then progressive obtundation develop. This can progress to coma and death. If it ruptures into the brain, the symptoms are an acute stroke that may also progress to coma and death.