You're right about that map it's way off.

Here's a list of distances (in miles) from Central Park, the distance is first and the name second.

ROOMS SOUTH OF RIVER
2.34
Sunset Beach Resort
2.31
Caribe Island Resort
1.77
Medical University of the Amer.
1.71
Victoria House
1.52
Mayas Katut Resort
1.46
Royal Palm Island Resort
1.46
Royal Palm Villas
1.45
Mata Rocks Resort
1.44
Banana Beach Resort
1.41
Grand Colony
1.35
Tropica
1.27
The Villas at Banyan Bay
1.15
Xanadu Island Resort
1.03
Caribbean Villas Hotel
1.01
Coral Bay Villas
0.88
Coconuts Caribbean Hotel
0.86
Corana del Mar
0.81
Exotic Caye Beach Resort
0.67
Belize Yatch Club
0.63
Changes in Latitudes
0.65
Pedro's Backpacker's Inn
0.41
Ramon's Village and Steve & Beckys
0.36
The Palms Condominiums
0.34
Belizean Reef Suites
0.29
Sunbreeze Hotel
0.23
Ruby's
0.21
Holiday Hotel
0.17
Coral Beach Hotel
0.13
Spendrift Hotel
0.11
Martha's Hotel
0.01
Mayan Princess
0.04
Hotel SanPedrano
0.04
Lily's
0.03
Tomas Hotel
0.07
Conch Shell
0.11
Aqua Marina Suites
0.31
Paradise Villas
0.31
Tradewinds at Paradise Villas
0.32
Blue Tang Inn
0.41
The Tides Beach Resort
0.48
Casa Caracol and Esmeralda
0.58
Seven Seas
0.65
Hotel del Rio

ROOMS NORTH OF RIVER
0.89
RIVER
0.97
Villas at Del Rio
1.15
The Cloisters
2.46
Ocean Aire
2051
Esperanza House
2.63
White Sands Cove
2.78
El Pescador Lodge and Villas
2.87
Capricorn Resort
3.04
Capt. Morgan's Retreat
3.43
Belizean Shores
3.8
Blue Dolphin
3.81
Stella
3.88
Journey's End Resort
4.61
Caye Villas
4.74
Sundiver Beach Resort
5.11
Casa Azul
5.21
Mata Chica Beach Resort
5.59
Playa Blanca Dive & Beach Club
6.01
Portofino Resort
6.67
Costa Maya Reef Resort
8.11
Blue Reef
10.6
Salamander

2.61
Cayo Espanto Private Island