Distance between earth and sun is explained in ” Hanuman Chalisa”.
“! जुग सहस्त्र योजन पर भानु,
लील्यो ताहिमधुर फल जानू !”
This means that Sun (भानु) is at a distance of Juug Sahastra Yojans (जुग सहस्त्र योजन- Distance Unit in Hindi)
According to following conversion practices that are in use as per Hindu Vedic Literature-
1 Juug = 12000
1 Sahastra= 1000
1 Yojan = 8 Miles
Thus
12000 X 1000 X 8 = 96,000,000 miles
1 mile = 1.6 kms
This further implies that distance is 96,000,000 * 1.6 kms = 153,600,000 Kms
According to Modern Astronomy and Science, distance between earth and sun is = 152,171,522 km.