Terathlon 8-Hour... Prepare for primordial running, through forested trail and over green fields, full of fun & adventure but void of pavement! Terra Sans Pave is ideal for first-time trail runners, and those experienced runners looking to post a fast time for "not too technical" trail racing. A variety of surfaces make up the racecourse for Terra Sans Pave... crushed gravel, dirt and wood-chip paths comprise about 90% of the course, with sections traversing grassy fields. You'll cross two bridges on each lap, and even run along the river bank. There are no man-made obstacles, nor river crossings but conditions may be muddy especially with rainy weather in the week leading up to race day. Expect mostly smooth non-technical running, with occasional rocks & roots, and small slightly rolling hills. Each lap is 4 kilometers (~2½ miles) in length. Approximately 10 feet of vertical per mile.