JRF FM2026
Marathon
Sun 25 Oct 2026
Set your target — or finish time — and your on the Race Day tab: every clock, gel time and cut-off margin on Race Buddy follows.
schedule: 04:00
1 gun: 04:00
Unofficial. Not affiliated with Jakarta Running Festival or the race organiser. Official information always wins. Not medical advice.
The slowest that still makes the from your gun: 7:02/km.
Every clock on this card is the organiser's own 2026 value, published 3 Oct (official page v2); the is the page's 5 hours after the gun. All of them count from the 04:00 gun, and the 2026 page states a single mass start — there is no later to hide in, so every minute between your own start-line crossing and 04:00 is gone from every cut-off on this card. Every clock here is — your is yours alone — and the board holds the start-line spare for you (set it under Race day). One more: through the second the field is still one . Hold your own plan, and don't get swept along faster or slower than the crowd.
The 3-hourly trend across the race window lands here once the forecast loads — your gun through a slow finish.
Loads once per visit; the last good copy stays on this phone for race morning.
Forecast: BMKG (opens in a new tab), Indonesia's official weather agency — ≈3-hourly readings for the kelurahan around the start line. A forecast is not a promise about race morning; official information always wins.
- Race Day tab — set your and target (, finish time, or a 's finish); the default plan is course-shaped on a /km base — reshape it with the sliders
- Fuel tab — gel and station times for your plan
- Event tab — the official rundown, course services, links; Prep tab — race-eve checklists
- After tab — the first hour, the first week and the debrief once you finish
Everything is computed on your device; your inputs stay on your phone (localStorage). The forecast above sends only an area code. Visit counting, if you allow it from the About tab, records the page and a random id for this browser — not your plan.