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BOSTON MARATHON 2023

Brittany Piercy

Bib: 9287•F

NJ

0:00
0:00
/ mi
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Overall
#0 / 26622
Top 31%
Gender (Female)
#0 / 11423
Top 12%
Division (F18-39)
#0 / 4884
Top 23%
Race Day Weather
49°/39°F
light intensity drizzle

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
22:34
Rank: #7905
Start → 5K
22:34 | 7:16/mi
10K· 6.21 mi
45:00
Rank: #8054 (-149)
5K → 10K
22:26 | 7:13/mi
15K· 9.32 mi
1:07:42
Rank: #8195 (-141)
10K → 15K
22:42 | 7:18/mi
20K· 12.43 mi
1:30:42
Rank: #8242 (-47)
15K → 20K
23:00 | 7:24/mi
Half· 13.11 mi
1:35:45
Rank: #8290 (-48)
20K → Half
5:03 | 7:24/mi
25K· 15.53 mi
1:54:03
Rank: #8386 (-96)
Half → 25K
18:18 | 7:33/mi
30K· 18.64 mi
2:18:48
Rank: #8725 (-339)
25K → 30K
24:45 | 7:58/mi
20M
2:29:24
Rank: #8717 (+8)
30K → 20M
10:36 | 7:48/mi
21M
2:37:43
Rank: #8733 (-16)
20M → 21M
8:19 | 8:19/mi
35K· 21.75 mi
2:43:24
Rank: #8732 (+1)
21M → 35K
5:41 | 7:36/mi
23M
2:53:13
Rank: #8726 (+6)
35K → 23M
9:49 | 7:50/mi
24M
3:00:51
Rank: #8687 (+39)
23M → 24M
7:38 | 7:38/mi
40K· 24.85 mi
3:07:18
Rank: #8598 (+89)
24M → 40K
6:27 | 7:33/mi
25.2M
3:10:03
Rank: #8547 (+51)
40K → 25.2M
2:45 | 7:58/mi
Finish· 26.22 mi
3:17:07
Rank: #8336 (+211)
25.2M → Finish
7:04 | 6:56/mi

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:35:45
Pace7:18 /mi
2nd Half
Distance13.11 mi
Time1:41:22
Pace7:44 /mi
📊Positive Split: 5.9% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:48:1022:347:1622:34
7:16
-
10K
6.21 mi11:10:3645:007:1522:26
7:13
-0:03
15K
9.32 mi11:33:181:07:427:1622:42
7:18
+0:05
20K
12.43 mi11:56:181:30:427:1823:00
7:24
+0:06
Half
13.11 mi12:01:211:35:457:185:03
7:24
0:00
25K
15.53 mi12:19:391:54:037:2118:18
7:33
+0:09
30K
18.64 mi12:44:242:18:487:2724:45
7:58
+0:25
20M
20.00 mi12:55:002:29:247:2810:36
7:48
-0:10
21M
21.00 mi13:03:192:37:437:318:19
8:19
+0:31
35K
21.75 mi13:09:002:43:247:315:41
7:36
-0:43
23M
23.00 mi13:18:492:53:137:329:49
7:50
+0:14
24M
24.00 mi13:26:273:00:517:327:38
7:38
-0:12
40K
24.85 mi13:32:543:07:187:326:27
7:33
-0:05
25.2M
25.20 mi13:35:393:10:037:332:45
7:58
+0:25
Finish
26.22 mi13:42:433:17:077:317:04
6:56
-1:02

Checkpoints & Pacing

📈Pace Line

Pace Progression

Track your pace changes throughout the race. Dot colors mark your quickest to easiest segments, relative to your own pace.

Fastest Pace

6:56 /mi

Average Pace

7:31 /mi

Slowest Pace

8:19 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

2:13:15

68% of race

Time at Steady Pace

55:33

28% of race

Time at Slower Pace

8:19

4% of race

Average Pace: 7:31 /mi

Loading chart...
Faster pace (< avg)
Steady pace (≈ avg)
Slower pace (> avg)

🎨Heatmap

Pace Heatmap

Where you sped up and eased off relative to your own pace across the race. Colors are relative to your own range, not to other runners.

Loading...
0mi6.6mi13.1mi19.7mi26.2mi
Pace:
Faster
Steady
Slower

Click or hover over segments to see details

✨Sparklines

Checkpoint Splits with Pace Trends

Overall Pace Trend

CheckpointDistanceTime of DayTimeAvg PaceSegmentPaceTrendRank
5K
3.11 mi10:48:1022:347:1622:34
7:16
#7905
10K
6.21 mi11:10:3645:007:1522:26
7:13
#8054
15K
9.32 mi11:33:181:07:427:1622:42
7:18
#8195
20K
12.43 mi11:56:181:30:427:1823:00
7:24
#8242
Half
13.11 mi12:01:211:35:457:185:03
7:24
#8290
25K
15.53 mi12:19:391:54:037:2118:18
7:33
#8386
30K
18.64 mi12:44:242:18:487:2724:45
7:58
#8725
20M
20.00 mi12:55:002:29:247:2810:36
7:48
#8717
21M
21.00 mi13:03:192:37:437:318:19
8:19
#8733
35K
21.75 mi13:09:002:43:247:315:41
7:36
#8732
23M
23.00 mi13:18:492:53:137:329:49
7:50
#8726
24M
24.00 mi13:26:273:00:517:327:38
7:38
#8687
40K
24.85 mi13:32:543:07:187:326:27
7:33
#8598
25.2M
25.20 mi13:35:393:10:037:332:45
7:58
#8547
Finish
26.22 mi13:42:433:17:077:317:04
6:56
#8336
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF18-39Seg. OverallSeg. FemalesSeg. F18-39
5K3.11 mi3.11 mi79059869868630(Top 32%)1289(Top 11%)1289(Top 26%)
10K6.21 mi3.10 mi8054-1491052-661052-668273(Top 31%)1136(Top 10%)1136(Top 23%)
15K9.32 mi3.11 mi8195-1411109-571109-578630(Top 32%)1289(Top 11%)1289(Top 26%)
20K12.43 mi3.11 mi8242-471135-261135-268555(Top 32%)1319(Top 12%)1319(Top 27%)
Half13.11 mi0.68 mi8290-481153-181153-189466(Top 36%)1646(Top 14%)1646(Top 34%)
25K15.53 mi2.42 mi8386-961220-671220-679142(Top 34%)1607(Top 14%)1607(Top 33%)
30K18.64 mi3.11 mi8725-3391378-1581378-15810621(Top 40%)2452(Top 21%)2452(Top 50%)
20M20.00 mi1.36 mi8717+81397-191397-198875(Top 33%)1742(Top 15%)1742(Top 36%)
21M21.00 mi1.00 mi8733-161415-181415-189334(Top 35%)2059(Top 18%)2059(Top 42%)
35K21.75 mi0.75 mi8732+11432-171432-179270(Top 35%)2023(Top 18%)2023(Top 41%)
23M23.00 mi1.25 mi8726+61454-221454-228695(Top 33%)1878(Top 16%)1878(Top 38%)
24M24.00 mi1.00 mi8687+391464-101464-108647(Top 32%)1934(Top 17%)1934(Top 40%)
40K24.85 mi0.85 mi8598+891445+191445+197006(Top 26%)1367(Top 12%)1367(Top 28%)
25.2M25.20 mi0.35 mi8547+511432+131432+136426(Top 24%)1210(Top 11%)1210(Top 25%)
Finish26.22 mi1.02 mi8336+2111387+451387+454869(Top 18%)695(Top 6%)695(Top 14%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 32%
×21stories
+97ft-345ft

Overall

8630

Females

1289

F18-39

1289

5K→10K

3.1 - 6.2 mi

Top 31%
×5stories
+79ft-138ft

Overall

8273

Females

1136

F18-39

1136

10K→15K

6.2 - 9.3 mi

Top 32%
×3stories
+67ft-78ft

Overall

8630

Females

1289

F18-39

1289

15K→20K

9.3 - 12.4 mi

Top 32%
×5stories
+106ft-86ft

Overall

8555

Females

1319

F18-39

1319

20K→Half

12.4 - 13.1 mi

Top 36%
×2stories
+19ft-37ft

Overall

9466

Females

1646

F18-39

1646

Half→25K

13.1 - 15.5 mi

Top 34%
×4stories
+66ft-88ft

Overall

9142

Females

1607

F18-39

1607

25K→30K

15.5 - 18.6 mi

Top 40%
×9stories
+181ft-148ft

Overall

10621

Females

2452

F18-39

2452

30K→20M

18.6 - 20.0 mi

Top 33%
×5stories
+64ft-50ft

Overall

8875

Females

1742

F18-39

1742

20M→21M

20.0 - 21.0 mi

Top 35%
×8stories
+106ft-24ft

Overall

9334

Females

2059

F18-39

2059

21M→35K

21.0 - 21.8 mi

Top 35%
×7stories
+17ft-86ft

Overall

9270

Females

2023

F18-39

2023

35K→23M

21.8 - 23.0 mi

Top 33%
×5stories
+23ft-63ft

Overall

8695

Females

1878

F18-39

1878

23M→24M

23.0 - 24.0 mi

Top 32%
×6stories
+12ft-82ft

Overall

8647

Females

1934

F18-39

1934

24M→40K

24.0 - 24.9 mi

Top 26%
×1story
+6ft-20ft

Overall

7006

Females

1367

F18-39

1367

40K→25.2M

24.9 - 25.2 mi

Top 24%
×1story
+13ft-16ft

Overall

6426

Females

1210

F18-39

1210

25.2M→Finish

25.2 - 26.2 mi

Top 18%
×2stories
+22ft-21ft

Overall

4869

Females

695

F18-39

695

Passing Analysis

Category:
Athletes Passed
1260
Passed By
1691
Net Change
-431
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#7905
5K → 10K160309-149#7905#8054
10K → 15K91232-141#8054#8195
15K → 20K106153-47#8195#8242
20K → Half1058-48#8242#8290
Half → 25K84180-96#8290#8386
25K → 30K72411-339#8386#8725
30K → 20M8072+8#8725#8717
20M → 21M7692-16#8717#8733
21M → 35K4241+1#8733#8732
35K → 23M7771+6#8732#8726
23M → 24M8546+39#8726#8687
24M → 40K10617+89#8687#8598
40K → 25.2M576+51#8598#8547
25.2M → Finish2143+211#8547#8336
TOTALS12601691-431
📊

Passing Visuals

Category:
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🔥Passing Intensity

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🔄Passing Circle

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🌊Position Flow

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🏃Race Lanes

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Public Race Data

Boston Athletic Association

Boston Athletic Association

Mika Timing

Mika Timing