I have been trying to figure this out for weeks. Came across the NBC sports gold thing this morning and was extremely disappointed as it looks like that’s the only way to watch races in the US. I came here to post/whine about it and found this thread. I would consider paying an extra $30 or $40 if it was an actual television channel where I could DVR the events and watch them at a reasonable hour on my big screen. That is about what I paid extra to have the Olympic Channel last year for the six months of the world cup season. Streaming on my phone or little iPad for $70 just isn’t going to cut it.
I'm not sure if someone else covered this as I haven't read the whole thread. But if you can stream it on your iphone/ipad and you have an Apple TV, you can "mirror" the stream to your big tv (assuming the Apple TV is connected to your big tv). My teenager showed me how. It doesn't solve the DVR issue, but at least you can watch it on the TV, and the quality is good.