TOES IN THE SAND: Gardner Pilot Academy teacher Liz Byron has a problem: her sixth grade class of 42 students has only four laptops to share. So she’s taking matter into her own hands...or rather, on her feet. She’s going to run a 155-mile ultramarathon next April through the Sahara desert, enduring sandstorms and 120-degree heat, as part of a fundraiser to raise $50,000 for 30 new laptops. “It may seem like a crazy race but what we attempt to do every day as teachers is a bigger challenge than trying to run 155 miles in the Sahara,” said Byron to CBS Boston.