Starting April 16, teacher Yong Yuen Cheng, 43 and media producer Lim Nghee Huat, 61, will clock 50km daily for 50 consecutive days as part of the Go50 Run project to mark Singapore's 50 years of independence.
Despite having done ultra marathons of over 200km, both runners said 50km daily for 50 days would be their most challenging run so far. Most marathons are 42.2km long. Reporter Kash Cheong brings you daily updates of their timing.
Day 47: 4 hours 47 minutes
Day 43: 7 hours 10 minutes
Day 42: 6 hours 30 minutes
Day 41: 5 hours 49 minutes
Day 40: 5 hours 21 minutes
Day 39: 7 hours 28 minutes
Day 38: 5 hours 31 minutes
Day 37: 7 hours 44 minutes
Day 36: 5 hours 49 minutes
Day 35: 6 hours 20 minutes
Day 34: 6 hours 59 minutes
Day 33: 7 hours 28 minutes
Day 32: 7 hours 29 minutes
Day 31: 6 hours 54 minutes
Day 30: 6 hours 36 minutes
Day 29: 7 hours 23 minutes
Day 28: 8 hours 15 minutes
Day 27: 8 hours 40 minutes
Day 26: 8 hours 54 minutes
Day 25: 8 hours 20 minutes
Day 24: 9 hours 51 minutes
Day 23: 7 hours 28 minutes
Day 22: 8 hours 26 minutes
Day 21: 7 hours 15 minutes
Day 20: 8 hours 26 minutes
Day 19: 7 hours 34 minutes
Day 18: 7 hours 50 minutes
Day 17: 6 hours 38 minutes
Day 16: 6 hours 46 minutes
Day 15: 7 hours 18 minutes
Day 14: 7 hours 54 minutes
Day 13: 7 hours 54 minutes
Day 12: 7 hours 57 minutes
Day 11: 7 hours 17 minutes
Day 10: 7hours 38 minutes
Day 9: 7 hours 29 minutes
Day 8: 7 hours 45 minutes
Day 7: 7 hours 11 minutes
Day 6: 7 hours 21 minutes
Day 5: 7 hours 30 minutes
Day 4: 7 hours 44 minutes
Day 3: 6 hours 55 minutes
Day 2: 7 hours 5 minutes
Day 1: 6 hours 13 minutes