Running Tracks
There are several different materials that can be used to build a running track around a natural grass turf field. The construction is not as simple as it might appear. A Certified Track Builder should be consulted. http://www.sportsbuilders.org/track/ctb.cfm
Nike Grind
Nike Grind should be excellent for the 8 lane track.
http://nikegrind.com/surfaces/running-tracks#sustainable-speed
http://www.sportsbuilders.org/track/ctb.cfm
References and More Information
http://www.rennersports.com/running-tracks/new-track-construction/
http://www.rennersports.com/wp-content/uploads/2011/07/Running-Track-Surfacing-Brochure_email.pdf
http://www.rennersports.com/wp-content/uploads/2011/07/Running-Track-Construction-Brochure_email.pdf
U. S. Tennis Court & Track Builders Association Track Construction Manual
http://files.eric.ed.gov/fulltext/ED433676.pdf

