Can orthotics make you faster?

I overpronate, and finally got some my gait looked and and given orthotics for inside my shoes. I went out in them for the first time today, and I was noticably faster. According to my garmin, my first mile was 10:23 (normally around 10:45ish) and the second and third 10:20 and 10:27 (normally I'm around the 11:20-11:30 minute mark). I don't think I did anything different and the only thing I changed about todays run was wearing the orthotic things. Would they have made any difference or was it just a randomly good run? I'm not complaining, just curious!

I've only been running since March so pretty new to all this - so sorry if this is a totally ridiculous question!

randomly good runs do happen....if your orthotics took 1 minute-ish of miles 2-3, then I want the name of your podiatrist.   But I also agree with Stylish, should be more efficient with orthotics, but 1 minute seems a little too much to credit only to the orthotics.

 Nip off for another run tomorrow and update us

Thanks - I'll have another run tomorrow and let you know whether it was some sort of freakish one off - hopefully not! I got quite excited about trying to do my next 5k (September) in 30 minutes or less after this mornings run! 

well done...sounds like the orthotics are helping then

tactics...try and hold back a little on your first mile so you have a bit extra for miles 2 & 3...you might find you're faster overall.  You'll get under than 30 minutes in your 5k, I'm sure....good luck and enjoy!