Nobody can say for sure whether or not it will snap you'll probably be OK until you get back. I changed mine at almost 70k before and some have waited even longer. You should be less concerned with your mileage and more concerned about the age of your belt though. It's almost 12 years old you know. The only way you'll be sure that it won't give out on you is to change it now.
Jonathan Howlett AIM-JRHZ32 1993 Ultra Red Twin Turbo 1990 Pearl Yellow Twin Turbo(Deceased)