Sometimes the park can be very busy and the entrances become jammed. Walk for 10-15 mins from Nishitachikawa station to the Akishima gate and you'll go straight through as there's no car park there.
"Kasai Seaside Park". These are wide park near the marina.I likes chillin on the grass at the park every weekend.
Hikarigaika Park is quite big and Great for jogging, cycling, dogs running and loud children:-) dozens of block of flats around so as quite shopping places and restaurants incl Subway.