Streets run is fine if you are comfortable riding in traffic. There is a brief spot where the 885 ramp narrows the lane and you need to control-the-lane for a hundred yards or so, but then the road has at least a narrow shoulder most of the way. Be mindful that traffic moves faster than the posted limit, and some sight lines are less than optimal, and there are a few RR crossings. But overall it's not too bad. I usually take a detour toward the top to eliminate a nasty intersection at route 51. Take a left (which is really straight) at Springdale to Irwin to the light at rt 51, but go through the parking lot to the next traffic light to cross over to Grace street. Then you wiggle over to Curry rd. and into the park. Here's a link of how I'd do it. https://goo.gl/maps/gtXTH The other option is to go up 18th street and out Brownsville road. This has the benefit of not having too many directions to remember, and it's more like riding on city streets, but I think it might be more climbing. https://goo.gl/maps/NYqBi And the "T" gets you rather close to South Park too if you want the easiest way. Either way you should be ok.