Answer: 988 km or 614 miles
Step-by-step explanation:
No map attached however I used a map with a scale of 1.7cm : 200 km to find that the straight-line distance was 8.4cm.
This means that the actual straight-line distance is;
1.7x = (8.4 * 200)
x = 1,680/1.7
x = 988 km