Jill Barville, of the 3Rs blog, is encouraging people to participate in a virtual memorial run for Sherry Arnold, a kidnapped & probably murdered Montana teacher who never returned from a job earlier this month. The virtual run will begin at 9 a.m. Saturday 11. Jill writes: "I’ve thought of Sherry during almost every run in the past three weeks, some of them adrenaline-fueled races against myself as I’ve thought about the many dangers to runners, especially women, no matter how many precautions we take. I’ve imagined the many ways Sherry’s story might have ended differently, have ended later. But we can’t revise real life the way we might a blog post or piece of fiction. We also can’t predict how our own stories will end." More here.

Question: What precautions do you take when you walk or run by yourself?