Jennie L. on Mission Viejo's Oso Creek Trail
Nice trail, beautiful scenery and well maintenance! Good for walking and jogging.
We started out in the parking lot of the senior center - easy, shaded parking. We walked NE on the trail following Jeronimo Rd on the left and Oso Creek on the right up to the "top" (~200ft gain) where you almost intersect Olympiad Rd. We made a loop back to our starting place by coming back down the hill on the other side of the creek where Oso Creek was on our right and homes were on our left. The trail is completely paved, wide and easy. The trail is dog friendly. There is one street crossing. About half the trail was in the morning sun and the other half was shaded - bring sunscreen and water.
Riding this trail the past two weekends getting my fiancee used to her new mountain bike. She calls it gear boot camp. The trail is mostly for walkers and people taking their dogs out for the day. If we weren't there for a purpose, I would avoid it in a bike.
The north/west side of this trail is dirt and rocky, so it's suitable for mountain biking/hiking, while the south/east side of this trail is paved, so it's more suitable for walking even with a stroller. I mostly use the paved path as a leisure walking path, as it is quiet and pleasant.
This is a great family trail, very stroller friendly. There was one steep, muddy hill by the oak grove that I had a hard time pushing through, but on a dry day it would be no problem. It was just after some rains, so the creek was flowing nicely. The twins were excited to see a snowy egret that wasn't scared of them. The trail is pretty busy, but everybody seems friendly. There are benches all along the route, and the trail can be extended up to about six miles or so if you are so inclined.