Table 1:
Weather and Race Characteristics
| Race | Year | Tamb °C | Sky | Precip (In) | RH (%) | WBGT (°C) | Finishers | Female N (%) | Enc/1000 | EHS/1000 | IIRM |
|---|---|---|---|---|---|---|---|---|---|---|---|
| BAA 10K | Overall | 31898 | 4.2 | 0.6 | |||||||
| BAA 10K | 2012 | 22.2 | CLR | 0 | 52 | 16.1 | 4561 | 2536 (55.6) | 3.9 | 0.7 | Green |
| BAA 10K | 2013 | 24.4 | FEW, SCT | 0 | 62 | 19.6 | 5434 | 3650 (67.1) | 5.7 | 1.3 | Yellow |
| BAA 10K | 2015 | 17.8 | BKN, OVC | 0.27 | 100 | 17.8 | 5960 | 3235 (54.3) | 2.5 | 0 | Green |
| BAA 10K | 2016 | 21.1 | FEW | 0 | 61 | 16.6 | 7816 | 4433 (56.7) | 4.1 | 1.0 | Green |
| BAA 10K | 2017 | 23.9 | FEW | 0 | 46 | 16.8 | 8127 | 4637 (57.3) | 4.7 | 0.2 | Green |
| F50 | Overall | 13823 | 2.9 | 0.3 | |||||||
| F50 | 2011 | 25.6 | FEW | 0 | 69 | 21.5 | 3037 | 1635 (53.8) | 4.3 | 0.3 | Yellow |
| F50 | 2012 | 27.8 | FEW | 0 | 38 | 18.4 | 2991 | 1608 (53.8) | 0.3 | 0 | Green |
| F50 | 2013 | 27.8 | CLR | 0 | 77 | 24.7 | 2283 | 1271 (55.7) | 4.4 | 0.4 | Red |
| F50 | 2014 | 26.7 | CLR | 0 | 67 | 22.2 | 1624 | 877 (54.0) | 2.5 | 1.2 | Red |
| F50 | 2015 | 22.2 | CLR | 0 | 55 | 16.7 | 1357 | 709 (52.2) | 3.7 | 0 | Green |
| F50 | 2016 | 24.4 | CLR | 0 | 42 | 16.4 | 1246 | 626 (50.2) | 4 | 0 | Green |
| F50 | 2017 | 26.1 | CLR | 0 | 41 | 17.6 | 1285 | 656 (51.1) | 1.6 | 0 | Green |
| B2B | Overall | 44544 | 8.7 | 1.6 | |||||||
| B2B | 2011 | 22.2 | FEW | 0 | 82 | 20.1 | 5876 | 2924 (49.8) | 12.6 | 1.4 | Yellow |
| B2B | 2012 | 25.6 | CLR | 0 | 67 | 21.2 | 6105 | 3156 (51.7) | 12.4 | 3.6 | Yellow |
| B2B | 2013 | 16.7 | OVC | T | 90 | 15.7 | 6247 | 3269 (52.3) | 5.8 | 0.3 | Green |
| B2B | 2014 | 20.6 | SCT, OVC | 0 | 87 | 19.2 | 6490 | 3513 (54.1) | 7.4 | 1.1 | Yellow |
| B2B | 2015 | 22.8 | FEW | 0 | 62 | 18 | 6594 | 3635 (55.1) | 11.1 | 1.8 | Yellow |
| B2B | 2016 | 23.3 | OVC | 0 | 74 | 20.1 | 6345 | 3401 (53.6) | 6.5 | 1.4 | Yellow |
| B2B | 2017 | 21.1 | BKN, OVC | 0 | 87 | 19.7 | 6887 | 3742 (54.3) | 5.8 | 1.5 | Yellow |
| Average | 23.3 | 66 | 18.9 | 4751 | 2606 (54.0%) |
Incidence rates are expressed as medical encounters per 1000 finishers.
BAA Boston Athletic Association; F50 Finish at the 50; B2B Beach to Beacon; Tamb (°C) Ambient temperature in °Celsius; Sky Sky Conditions; Precip (In) Precipitation in inches; RH Relative Humidity; WBGT (°C) Wet Bulb Globe Temperature in °Celsius; Enc Medical Encounters; EHS Exertional Heat Stroke; IIRM International Institute for Race Medicine alert level. CLR Clear; FEW Few clouds; SCT Scattered clouds; BKN Broken clouds; OVC Overcast;