JUSTENLAU

Races

RaceDateDistanceTimeResult
Quarter-life crisisNov 2025

November 2025: a quarter-life crisis, right on schedule. Six months later, 69kg became 62kg, and a first marathon happened along the way.

Vancouver MarathonMay 3, 202642.2 km4:09:33Finish

First marathon, six months in the making. I took the early downhills too fast and banked quad damage that came due at km 32. A homemade gel flask exploded around km 5, side stitches arrived by km 26, and a cramp in the right quad forced the first walk break of the day. Crowd support carried the last 10 km. I finished on cramping legs, above the 4:30 to 4:45 average for first-timers, and the mental barrier is gone: I know in my body that I can cover 42 km.

Before

  • Friday night sleep: 3 hours. Saturday night sleep: 6 hours
  • Carb load on Friday went well
  • Performance Condition flagged -4 from baseline, nervous on his first race
  • Longest long run was 26km, or maybe 2hrs 15mins, “oopsie”

During

  • Took the early downhills too fast, banking quad damage on fresh legs that wouldn’t come due until km 32
  • A DIY gel flask exploded around km 5, in front of a friend with a camera: sticky hands, sticky phone, belt friction at crotch and back waist
  • Aerobic base too thin for the course: ran at avg 170 HR (mid-Z3) with LTHR at 182
  • Side stitches by km 26, then the right quad cramped hard at km 32, forcing the first walk break of the day
  • Finished on cramping legs without dropping out
  • Crowd support and aid station volunteers carried the last 10 km
  • 4:09:33 on a hard course, sleep-deprived, as a six-month beginner, above the 4:30-4:45 average for first-timers

After

  • Both quads trashed, calves weak, still limping 5 days post-race, on the long end of normal DOMS recovery given the eccentric downhill damage
  • Chafing at crotch and back waist from belt friction on sticky skin
  • The result: 4:09:33. Avg HR 170 (mid-Z3). Perceived effort 9/10. Self-evaluation: “Weak.”

Reflection for improvement

What it bought

Physiology

LTHR
182 bpm
Max HR
202 bpm
Resting HR
45 bpm
VO2 max
56
LT pace
4:37 /km

Training block

Dates
Nov 26, 2025 to May 2, 2026
Activities
113
Distance
1,230.81 km
Time
130:42:26
Average pace
6:22 /km
Grade-adjusted
5:40 /km
Average HR
155 bpm
Ascent
656 m
CSB Backyard UltraNov 7, 20266.7 km loops

Montreal. A 6.7 km loop every hour, on the hour, until one runner is left.

Puerto Vallarta 53KMar 5, 202753 km
Ultra-Trail Whistler 100KJun 26, 2027100 km