Glen Lim, 13, swims in the 1500m freestyle at the 47th Singapore National Age Group Swimming Championships. He rewrote his own national under-14 record with a timing of 16:36.38. (Photo 10 © Chua Kai Yun/Red Sports)

Glen Lim, 13, on his way to rewriting his own national under-14 record of 16:39.73 with his 16:36.38 finish. (Photo 9 © Chua Kai Yun/Red Sports)