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BOSTON MARATHON 2023

Erica Brangwynne

Bib: 14816•F

MA

0:00
0:00
/ mi
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Overall
#0 / 26622
Top 47%
Gender (Female)
#0 / 11423
Top 29%
Division (F18-39)
#0 / 4884
Top 47%
Race Day Weather
49°/39°F
light intensity drizzle

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
23:47
Rank: #11082
Start → 5K
23:47 | 7:39/mi
10K· 6.21 mi
46:38
Rank: #10085 (+997)
5K → 10K
22:51 | 7:21/mi
15K· 9.32 mi
1:09:52
Rank: #10014 (+71)
10K → 15K
23:14 | 7:29/mi
20K· 12.43 mi
1:33:47
Rank: #10251 (-237)
15K → 20K
23:55 | 7:42/mi
Half· 13.11 mi
1:39:02
Rank: #10319 (-68)
20K → Half
5:15 | 7:42/mi
25K· 15.53 mi
1:58:20
Rank: #10635 (-316)
Half → 25K
19:18 | 7:58/mi
30K· 18.64 mi
2:24:03
Rank: #10986 (-351)
25K → 30K
25:43 | 8:17/mi
20M
2:36:07
Rank: #11410 (-424)
30K → 20M
12:04 | 8:53/mi
21M
2:45:00
Rank: #11497 (-87)
20M → 21M
8:53 | 8:53/mi
35K· 21.75 mi
2:50:59
Rank: #11501 (-4)
21M → 35K
5:59 | 8:00/mi
23M
3:02:06
Rank: #11797 (-296)
35K → 23M
11:07 | 8:53/mi
24M
3:10:38
Rank: #11936 (-139)
23M → 24M
8:32 | 8:32/mi
40K· 24.85 mi
3:18:11
Rank: #12081 (-145)
24M → 40K
7:33 | 8:50/mi
25.2M
3:21:39
Rank: #12197 (-116)
40K → 25.2M
3:28 | 10:03/mi
Finish· 26.22 mi
3:30:27
Rank: #12389 (-192)
25.2M → Finish
8:48 | 8:38/mi

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:39:02
Pace7:33 /mi
2nd Half
Distance13.11 mi
Time1:51:25
Pace8:30 /mi
📊Positive Split: 12.5% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:52:3823:477:3923:47
7:39
-
10K
6.21 mi11:15:2946:387:3022:51
7:21
-0:18
15K
9.32 mi11:38:431:09:527:3023:14
7:29
+0:08
20K
12.43 mi12:02:381:33:477:3323:55
7:42
+0:13
Half
13.11 mi12:07:531:39:027:335:15
7:42
0:00
25K
15.53 mi12:27:111:58:207:3719:18
7:58
+0:16
30K
18.64 mi12:52:542:24:037:4425:43
8:17
+0:19
20M
20.00 mi13:04:582:36:077:4812:04
8:53
+0:36
21M
21.00 mi13:13:512:45:007:518:53
8:53
0:00
35K
21.75 mi13:19:502:50:597:525:59
8:00
-0:53
23M
23.00 mi13:30:573:02:067:5511:07
8:53
+0:53
24M
24.00 mi13:39:293:10:387:578:32
8:32
-0:21
40K
24.85 mi13:47:023:18:117:587:33
8:50
+0:18
25.2M
25.20 mi13:50:303:21:398:003:28
10:03
+1:13
Finish
26.22 mi13:59:183:30:278:028:48
8:38
-1:25

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

7:21 /mi

Average Pace

8:02 /mi

Slowest Pace

10:03 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

1:39:02

47% of race

Time at Steady Pace

1:08:20

32% of race

Time at Slower Pace

43:05

20% of race

Average Pace: 8:02 /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 mi10:52:3823:477:3923:47
7:39
#11082
10K
6.21 mi11:15:2946:387:3022:51
7:21
#10085
15K
9.32 mi11:38:431:09:527:3023:14
7:29
#10014
20K
12.43 mi12:02:381:33:477:3323:55
7:42
#10251
Half
13.11 mi12:07:531:39:027:335:15
7:42
#10319
25K
15.53 mi12:27:111:58:207:3719:18
7:58
#10635
30K
18.64 mi12:52:542:24:037:4425:43
8:17
#10986
20M
20.00 mi13:04:582:36:077:4812:04
8:53
#11410
21M
21.00 mi13:13:512:45:007:518:53
8:53
#11497
35K
21.75 mi13:19:502:50:597:525:59
8:00
#11501
23M
23.00 mi13:30:573:02:067:5511:07
8:53
#11797
24M
24.00 mi13:39:293:10:387:578:32
8:32
#11936
40K
24.85 mi13:47:023:18:117:587:33
8:50
#12081
25.2M
25.20 mi13:50:303:21:398:003:28
10:03
#12197
Finish
26.22 mi13:59:183:30:278:028:48
8:38
#12389
Faster pace
Steady pace
Slower pace
Est.Checkpoint not recorded (estimated)
~Segment time uses estimated prior

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF18-39Seg. OverallSeg. FemalesSeg. F18-39
5K3.11 mi3.11 mi110822378237810019(Top 38%)1854(Top 16%)1854(Top 38%)
10K6.21 mi3.10 mi10085+9971881+4971881+4979283(Top 35%)1538(Top 13%)1538(Top 31%)
15K9.32 mi3.11 mi10014+711837+441837+4410019(Top 38%)1854(Top 16%)1854(Top 38%)
20K12.43 mi3.11 mi10251-2371950-1131950-11310924(Top 41%)2373(Top 21%)2373(Top 49%)
Half13.11 mi0.68 mi10319-681986-361986-3611932(Top 45%)2884(Top 25%)2884(Top 59%)
25K15.53 mi2.42 mi10635-3162167-1812167-18112414(Top 47%)3314(Top 29%)3314(Top 68%)
30K18.64 mi3.11 mi10986-3512399-2322399-23212886(Top 48%)3684(Top 32%)3684(Top 75%)
20M20.00 mi1.36 mi11410-4242665-2662665-26615939(Top 60%)5545(Top 49%)5545(Top 114%)
21M21.00 mi1.00 mi11497-872727-622727-6212712(Top 48%)3807(Top 33%)3807(Top 78%)
35K21.75 mi0.75 mi11501-42750-232750-2312145(Top 46%)3508(Top 31%)3508(Top 72%)
23M23.00 mi1.25 mi11797-2962933-1832933-18315428(Top 58%)5404(Top 47%)5404(Top 111%)
24M24.00 mi1.00 mi11936-1393043-1103043-11014681(Top 55%)5049(Top 44%)5049(Top 103%)
40K24.85 mi0.85 mi12081-1453149-1063149-10615238(Top 57%)5420(Top 47%)5420(Top 111%)
25.2M25.20 mi0.35 mi12197-1163214-653214-6517599(Top 66%)6726(Top 59%)6726(Top 138%)
Finish26.22 mi1.02 mi12389-1923342-1283342-12816167(Top 61%)5909(Top 52%)5909(Top 121%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 38%
×21stories
+97ft-345ft

Overall

10019

Females

1854

F18-39

1854

5K→10K

3.1 - 6.2 mi

Top 35%
×5stories
+79ft-138ft

Overall

9283

Females

1538

F18-39

1538

10K→15K

6.2 - 9.3 mi

Top 38%
×3stories
+67ft-78ft

Overall

10019

Females

1854

F18-39

1854

15K→20K

9.3 - 12.4 mi

Top 41%
×5stories
+106ft-86ft

Overall

10924

Females

2373

F18-39

2373

20K→Half

12.4 - 13.1 mi

Top 45%
×2stories
+19ft-37ft

Overall

11932

Females

2884

F18-39

2884

Half→25K

13.1 - 15.5 mi

Top 47%
×4stories
+66ft-88ft

Overall

12414

Females

3314

F18-39

3314

25K→30K

15.5 - 18.6 mi

Top 48%
×9stories
+181ft-148ft

Overall

12886

Females

3684

F18-39

3684

30K→20M

18.6 - 20.0 mi

Top 60%
×5stories
+64ft-50ft

Overall

15939

Females

5545

F18-39

5545

20M→21M

20.0 - 21.0 mi

Top 48%
×8stories
+106ft-24ft

Overall

12712

Females

3807

F18-39

3807

21M→35K

21.0 - 21.8 mi

Top 46%
×7stories
+17ft-86ft

Overall

12145

Females

3508

F18-39

3508

35K→23M

21.8 - 23.0 mi

Top 58%
×5stories
+23ft-63ft

Overall

15428

Females

5404

F18-39

5404

23M→24M

23.0 - 24.0 mi

Top 55%
×6stories
+12ft-82ft

Overall

14681

Females

5049

F18-39

5049

24M→40K

24.0 - 24.9 mi

Top 57%
×1story
+6ft-20ft

Overall

15238

Females

5420

F18-39

5420

40K→25.2M

24.9 - 25.2 mi

Top 66%
×1story
+13ft-16ft

Overall

17599

Females

6726

F18-39

6726

25.2M→Finish

25.2 - 26.2 mi

Top 61%
×2stories
+22ft-21ft

Overall

16167

Females

5909

F18-39

5909

Passing Analysis

Category:
Athletes Passed
1753*
Passed By
3059
Net Change
-1307
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#11082
5K → 10K1032*35+997#11082#10085
10K → 15K221149+71#10085#10014
15K → 20K88*325-237#10014#10251
20K → Half876-68#10251#10319
Half → 25K54370-316#10319#10635
25K → 30K90441-351#10635#10986
30K → 20M22446-424#10986#11410
20M → 21M67154-87#11410#11497
21M → 35K4751-4#11497#11501
35K → 23M34330-296#11501#11797
23M → 24M28167-139#11797#11936
24M → 40K29174-145#11936#12081
40K → 25.2M6122-116#12081#12197
25.2M → Finish27219-192#12197#12389
TOTALS1753*3059-1307

* Includes athletes who did not complete a segment (DNF/DNQ).

📊

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