Sheer mudness! Race over and through natural and man-made obstacles - mud, hay, logs and more - at Camp Loughridge in southwest Tulsa. Do the full 5K or the one-mile fun course. Event proceeds help with economically disadvantaged kids attend a week of summer camp in the great outdoors. Registration is $35 and includes a t-shirt; the fun run costs $20. Register online <a href="http://www.xtreme5K.com
">here</a>.