Add the spring mix lettuce, sliced peaches, blueberries, avocado, red onion, crumbled feta, and chopped pecans to a large serving bowl.
In a small bowl or jar, combine the olive oil, honey, apple cider vinegar, lemon juice, Dijon mustard, and salt.
Whisk the dressing until the ingredients are fully combined and the vinaigrette looks slightly thickened and emulsified.
Drizzle the desired amount of honey vinaigrette over the salad.
Gently toss until the ingredients are evenly coated. Serve immediately.