Blackrock Trail head:
From Ingonish, head past the Broadcove Campground and turn right at the Black Brook beach turn off. Turn left at the stop sign and you will see the trail head shortly.
Halfway Brook Trail head:
Keep driving past the entrance to the Black Brook beach eventually see a parking lot on the left Halfway Brook. Park there and walk across the street. You can find the trail head just up from that parking lot.