London at a glance
- Start/Finish: Greenwich/Blackheath → The Mall.
- Profile: Fast and flat overall (officially ~246 ft / ~75 m total gain).
- Race character: Heavy spectator density, early start‑merge congestion, and momentum‑boosting landmarks (Cutty Sark, Tower Bridge, Canary Wharf, Embankment).
- Pacing tendency: Rewards even or slight negative splits if you stay disciplined through the first half.
How to pace it
- 0–10 km — Settle & protect rhythm: expect crowding/merges; avoid weaving; cap effort.
- 10–32 km — Bank rhythm, not time: hold marathon pace; landmarks can trick you faster.
- 32–42.2 km — Intentional finish: aim for a gentle negative split; press along the Embankment.
Fueling & hydration (practise in training)
- Carbs: ~60–90 g per hour for races >2–3 h; combine glucose + fructose; rehearse weekly.
- Hydration: drink to thirst and conditions; many land ~400–800 ml/h (needs vary widely).
Logistics tips
- Expo temptation: no new shoes/socks/gels on race day.
- Crowd density: accept early slow patches; weaving costs time and energy.
Kit cues
Go light and locked‑in for PB attempts: Moggans Ultralight Speed. If it’s cool pre‑start, add comfort without bulk: Ultralight Merino.
