In 2008, the 210 acre Weir Canyon Wilderness Park was incorporated into Santiago Oaks. The annexation created a trail system that spans from Irvine Regional Park through Santiago Oaks to Weir Canyon in East Anaheim Hills.

trail running
3 months ago

This trail is amazing. You can do an easy one mile loop or you can connect Weir and Santiago trails to do 10+ mile strenuous runs.
The 4ish Mile Weir loop gives you everything you could ask for in terms of terrain with constantly changing scenery ( huge plus ). This is a moderate trail run for a newer runner where technique can really be worked on. If your looking for an added challenge and/or additional mileage add on the loop to Robbers Roost.

trail running
5 months ago

Great hike.Easy as well my only major recommendation would be to get an early start on this hike maybe 7-8am because there is no shade throughout the entire hike.There are lots of twists and turns and snakes !! beware of rattlesnakes they could pop out of nowhere .Regulars here say they will see multiple rattlesnakes on warm days .I myself saw one with my fellow hiker .Other than that Enjoy !

Beautiful hike with an early 8 AM start time. The trail includes lots of ups and downs with twisty paths, We went counter clockwise. I was thankful I brought my poles. They were useful for the steep down hills and up hills. Dogs are allowed on a leash, but the trail is exposed to sun with no shade to speak of. They may get really hot if there is no overcast skies as there was today.

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