Zombillion’s most consequential design feature is not the obstacles or the finish line; it is the checkpoint queue that forms when a large wave reaches the first timing gate at once. For teams treating the event as a straight sprint, that queue turns early speed into lost minutes. The fix is a paced start and a deliberate spread of effort across the first kilometre.
The bottleneck problem
In a typical Zombillion wave, the first checkpoint sits close enough to the start to reward adrenaline but far enough to create a hard constraint. Runners who sprint the opening section arrive together, compress into a narrow lane, and wait for chip scans or manual checks. The result is a stop-start pattern that drains leg warmth and disrupts breathing rhythm. A team that begins at 85 per cent effort often reaches the same gate thirty seconds later with no queue and leaves it with fresher legs.
Takeaway: the fastest opening split is rarely the fastest overall. In obstacle events with fixed gates, arrival timing matters more than raw pace.
Why the queue forms
The cause is wave clustering, not poor organisation. Zombillion releases entrants in batches, and most teams naturally bunch around the same target pace: fast enough to feel competitive, slow enough to stay together. When the first gate is the only bottleneck before a long open section, the wave compresses like traffic at a toll booth. Stronger runners catch weaker ones, weaker runners hesitate, and the lane fills. The event’s own zombillion format encourages team completion, so the gate must process groups rather than individuals, which lengthens each interaction.
Takeaway: plan for the gate as a fixed cost, then budget effort around it.
The pacing solution
Teams should rehearse a “controlled first kilometre” that feels almost too easy. Set a target of conversational breathing until the first checkpoint is visible, then switch to a short, sharp surge only after clearing it. Assign one person to manage the queue: count the team, confirm every bib, and restart together at a lower intensity for two minutes. This prevents the post-queue spike that often causes cramps in the middle section.
Takeaway: Zombillion rewards patience at the start and discipline after the gate.
What to rehearse
Practical preparation beats race-day improvisation. Use these steps in training:
- Simulate the gate: place a marked stop point 400–600 metres into a tempo run and require the whole group to queue, regroup, and restart together.
- Practise low-gear restart: after the stop, hold a deliberately easy pace for 90 seconds before returning to target effort.
- Name a gate captain: that person checks bibs, keeps the team compact, and calls the restart.
- Review split times: compare the first kilometre with the post-gate kilometre; if the drop is large, the start was too aggressive.
Zombillion is not won by the team that reaches the first checkpoint first. It is won by the team that leaves it with the fewest wasted seconds and the most controlled breathing.
