i forget the street name but the one you take a right from rt9 to get to umass hospital, the one on the side away from lake quinsig, further on that past the couple lights that you'd take a left on to get to dick's plaza there's a couple rails on the left behind this huge lot of apartments that empty right into a massive field.
The first is somewhat sketch but you can use the stairs from the first to get speed for the 2nd half which goes directly into a huge field, minus a couple short twigs you gotta cut down, we were gonna go hit them last year but never got past scoping them out. If you can set it up well you can def hit the first then quickly shift over and hit the 2nd half, both are decently long