Here is a Strava segment for this loop clockwise. Scott Traer ran it in 1:22:04. Counterclockwise may have a faster time.

A hidden gem of Southern Phoenix! This little known route takes you up Bursera trailhead and connects you to National Trailhead. From here you’ll get the best 360 views of Southern Phoenix. The route is very runnable with a mix of technical and smooth dirt running. 

Randonnée pédestre sur le GR®127 à travers le département du Pas-de-Calais de Dennebroucq à Duisans via Vincly, Bomy, Cuhem, Fléchin, Febvin-Palfart, Fontaine-lès-Hermans, Nédonchel, Nédon, Amettes, Bailleul-lès-Pernes, Aumerval, Sachin, Pernes, Marest, Diéval, La Comté, Rebreuve-Ranchicourt, Bouvigny-Boyeffles, Ablain-Saint-Nazaire, Carency, Mont-Saint-Éloi et Marouil.
 

https://www.gr-infos.com/gr127.htm