Cook pasta until al dente, according to package instructions. Using a stainer, scoop out the pasta ad transfer to a large bowl. Add 1 tsp of olive oil and toss well. Cover and refrigerate.
Chop cucumbers, radish and spinach. In a bowl, whisk together olive oil, vinegar and the garlic. Pour over the pasta, cucumbers, radish and spinach. Add chopped parsley (optional). Toss well. Season with salt and pepper.