Why is it called GC Mascara?

Stands for Ghali Club/Chabab Mascara, renamed after independence from Gallia Club.

When was the last time GC Mascara was relegated?

2018 from second division to third.

Stade Aoued Meflah, Mascara

Algeria

Stade Aoued Meflah, Mascara

#	Team	P	W	D	L	PTS	DIFF	GLS	LAST 5
1	US Biskra	30	19	5	6	62	+25	41:16	D W W W W
1	JS El Biar	30	24	4	2	76	+36	53:17	W W W W W
2	CA Batna	30	18	6	6	60	+22	40:18	W L W L W
2	Usm El Harrach	30	18	8	4	62	+27	46:19	W D W W L
3	US Chaouia	30	18	6	6	60	+33	55:22	D W W W L
3	Témouchent	30	17	8	5	59	+15	38:23	W W W W W
4	MO Bejaia	30	17	9	4	60	+26	44:18	D W W W W
4	RC Kouba	30	17	8	5	59	+19	33:14	W W W D W
5	JS Jijel	30	14	9	7	51	+13	41:28	L L W D L
5	ASM Oran	30	18	4	8	58	+19	38:19	W L L W W
6	USM Annaba	30	14	6	10	48	+14	35:21	L L L D D
6	Hussein Dey	30	11	10	9	43	+10	34:24	W L W L W
7	NC Magra	30	10	9	11	39	-1	29:30	L L L W L
7	WA Tlemcen	30	11	7	12	40	-4	28:32	L W L W L
8	CR Béni Thour	30	10	7	13	37	-12	27:39	W L D W D
8	Tiaret	30	11	6	13	39	+4	35:31	L L W D L
9	MSP Batna	30	9	9	12	36	-4	32:36	W W D L W
9	Koléa	30	9	9	12	36	-8	26:34	L L L L L
10	Teleghma	30	9	9	12	36	-5	32:37	L L D L L
10	WA Mostaganem	30	9	8	13	35	-7	32:39	L L W L W
11	Nrb Beni Oulbene	30	9	9	12	36	-6	28:34	D W D W D
11	MC Saida	30	9	7	14	34	-3	26:29	L W D L W
12	MO Constantine	30	9	9	12	36	-8	25:33	W L L D D
12	GC Mascara	30	8	7	15	31	-8	28:36	L D D W W
13	JS Bordj Ménaïel	30	9	8	13	35	+3	34:31	W W L L W
13	RC Arba	30	9	5	16	32	-17	24:41	L W L W L
14	Khroub	30	9	9	12	36	0	31:31	W W L D W
14	JS Tixeraine	30	7	5	18	26	-16	30:46	W D L L L
15	IB Khémis El Khechna	30	5	7	18	22	-24	27:51	L D W L L
15	CRB Adrar	30	5	5	20	20	-38	26:64	L D L L L
16	HB Chelghoum Laïd	30	1	3	26	6	-76	13:89	L D L L L
16	Béchar Djedid	30	4	5	21	17	-29	29:58	W L L L L