Additional event notes
The useful answer
The Reykjavik Autumn Marathon is Saturday, October 10, 2026—not April 25, which is the organizer's separate Spring Marathon. The full marathon starts at 9:00 a.m., the half marathon at 11:00 a.m., and both start in Elliðaárdalur. Marathon runners must complete the first lap within 2 hours 30 minutes.
As of July 20, the race is just under 12 weeks away. That can support a focused final block for a runner with an existing base, but it is too late to compress a missing 16–24 week build.
Corrected 2026 race facts
| Item | Official information |
|---|---|
| Date | Saturday, October 10, 2026 |
| Full-marathon start | 9:00 a.m. |
| Half-marathon start | 11:00 a.m. |
| Start area | Elliðaárdalur valley |
| Marathon progress rule | First lap within 2:30 |
| Bib and timing-chip pickup | At the race start |
| Pre-registration deadline | Friday, October 9 at 6:00 p.m. |
Recheck the final organizer email for changes. A registration-system page is an authoritative current source, but operations can still change.
12-week late-start decision
| Current position | Best use of the remaining runway |
|---|---|
| Consistent running plus recent long runs | Build one controlled long run each week, rehearse fueling and use selected marathon-effort blocks |
| Consistent shorter running but limited long-run durability | Prioritize completion, grow time on feet conservatively and avoid a late mileage spike |
| Inconsistent training, illness or pain that changes gait | Choose a later goal rather than forcing a full build into the remaining weeks |
The first-lap rule makes honest pacing important. A runner targeting the full marathon needs enough margin to complete the opening lap within 2:30 without turning it into an unsustainable time trial.
Course-specific preparation
The organizer describes a small, friendly event in Reykjavik with marathon and half-marathon options. The verified start is in Elliðaárdalur, but use the current course map for exact turns, surface and aid placement.
- Practise even effort over repeated sections or laps rather than chasing an emotional first half.
- Rehearse fuel on the same schedule you expect to use after the first lap.
- Test layers that can handle wind or precipitation without overheating; use the current forecast, not an Iceland stereotype.
- Keep the final substantial long run early enough to taper instead of proving fitness late.
Race-week checklist
- Open the current organizer course map and note the lap structure.
- Confirm the 9:00 a.m. full-marathon start and first-lap rule.
- Check the Friday 6:00 p.m. pre-registration deadline.
- Plan bib and chip pickup at the start with enough time for queues.
- Use the 72-hour forecast to choose tested layers.
- Keep an effort reduction or stop decision for unsafe symptoms or conditions.