Running · Boston, US
Edition
2027
Hopkinton to Boylston, with the route taken from a March 2026 PDF and no 2027 GPX.
Race day
April 19, 2027
Distance
Marathon
Climbing
247 m
Photo: John Hoey (via Wikimedia Commons) · CC BY 2.0
2026 operating status
Know what is final.
19 April 2027. Age for the standards is age on that day.
SourceQualifier registration closed 18 September 2026 at 5:00 p.m. ET. Cutoff for acceptance was 5:17 under the standard. About 1,000 more places were a random draw for applicants who were not past that cutoff. The qualify page's table lists field size 30,000 and 8,019 qualifiers not accepted.
SourceNo GPX on the marathon page. The route towns, mile table, and MBTA chart are from the Race Course PDF in /wp-content/uploads/2026/03/. Not a 2027 edition label.
SourceRace weekend board
Every race weekend has a different failure point. Tell us who is coming and what the hotel must solve; the board changes the base, spectator plan, and race-day timing.
Your strongest base
Main Street, HopkintonWhy this result · This base matches “I’m racing” and “Start logistics” more strongly than the other authored options.
The PDF starts the race on Main Street in Hopkinton. This pin is a point on that street from OpenStreetMap on 4 November 2026, not a surveyed start line.
Tradeoff: Hopkinton is not a finish hotel. The two named hotels are at Copley.
Course timing signal
Finish side, on Boylston.
The contact page prints 61 Exeter Street at Boylston, Boston, Massachusetts 02116.
Consider: This is a Copley address. It does not put you in Hopkinton for the gun. We did not check a 2027 room block.
Address from the Lenox contact page, opened 4 November 2026.
03 / Predicted finish
These are elapsed estimates after the runner crosses the start, not clock times. Add transit and security margin.
Give this to your support crew
Miles and stations are the March 2026 PDF. They are not a 2027 survey.
Wellesley College / Route 135
Wellesley Square commuter rail is listed at 13.4 miles on the same PDF.
Pro hydration table: 20K, Wellesley College, mile 12.4. The campus pin is not the mat.
Boston College
Green Line B, Boston College, listed at 21.4 miles.
MBTA table on the March 2026 PDF. Newton hills are behind you by this point on that sheet.
Meetup: Do not expect a course shuttle. The PDF says there are none.
Compare the tradeoffs
Saved on this device
Boston is 19 April 2027. Qualifier registration closed on 18 September 2026, and the cutoff was 5 minutes 17 seconds under the standard. The route we can cite is a March 2026 PDF: Hopkinton to Boylston, with no GPX and no 2027 wave clock. A Copley hotel does not solve the trip to the start.
The qualify page, opened 4 November 2026, dates the race 19 April 2027 and says qualifier registration closed on 18 September 2026. The cutoff for acceptance was 5:17 under the age-group standard. The course description is the B.A.A. Race Course PDF uploaded March 2026. That file is not labeled 2027, and it has no GPX. Wave clocks in the PDF are not copied here.
The March 2026 Race Course PDF starts on Main Street in Hopkinton and follows Route 135 through Ashland, Framingham, Natick, and Wellesley, then Route 16, a right at the Newton fire station onto Commonwealth Avenue, the Newton hills, Chestnut Hill Avenue, Cleveland Circle, Beacon Street, Hereford, and Boylston, finishing near the Boston Public Library. That PDF is not labeled 2027 and it has no GPX. The 247 m gain and 149 m high point already stored here were not in the PDF.
Difficulty is the course and the conditions. The PR score is a separate read on a fast clock. Missing inputs are dropped and the other weights are rescaled. The method, with the weights.
Weight used: 60%. Need 40% before we print a number.
Band: fast. Weight used: 50%. Need 45% before we print a number.
Weather median for 2011–2025, race date ±7 days, 225 days, at Main Street, Hopkinton (street point, not the start mat). Grid elevation 146 m.
BQ rate 53.5% on 2026 Boston Marathon (15528 qualifiers). Source.
| Input | 0–100 | What went in |
|---|---|---|
| G Gain | — | No trusted gain per km. Uncertain stored gain is not used. |
| A Altitude | 0 | 146 m. 0 below 300 m, 100 at 2000 m. Source: open-meteo-grid. |
| H Heat | 30 | High 15°C, dew point 2.8°C. The hotter of the two bands is used. |
| W Wind | 40 | 3.35 m/s median. Bands: under 3 → 15, under 5 → 40, under 8 → 70, else 100. |
| S Surface | 15 | road. Road 15, mixed 45, gravel 70, trail 90. |
| T Cool temps | 70 | 100 minus heat (30). |
| B BQ evidence | 100 | 53.5% on 2026 Boston Marathon. 0% maps to 0 and 30% maps to 100. https://www.findmymarathon.com/bostonmarathonqualifiers-2027.php |
Four-day operating plan
Saturday 17 April 2027
01Sunday 18 April 2027
02Monday 19 April 2027
03
Difficulty 32 · PR 33
Difficulty 54
Difficulty 49 · PR 4
Difficulty 30 · PR 80