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BOSTON MARATHON 2023

Jaclyn Fowler

Bib: 8380•F

IN

0:00
0:00
/ mi
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Overall
#0 / 26622
Top 43%
Gender (Female)
#0 / 11423
Top 24%
Division (F18-39)
#0 / 4884
Top 40%
Race Day Weather
49°/39°F
light intensity drizzle

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
24:56
Rank: #14192
Start → 5K
24:56 | 8:02/mi
10K· 6.21 mi
49:52
Rank: #14559 (-367)
5K → 10K
24:56 | 8:02/mi
15K· 9.32 mi
1:14:24
Rank: #14241 (+318)
10K → 15K
24:32 | 7:54/mi
20K· 12.43 mi
1:39:03
Rank: #13861 (+380)
15K → 20K
24:39 | 7:56/mi
Half· 13.11 mi
1:44:26
Rank: #13834 (+27)
20K → Half
5:23 | 7:53/mi
25K· 15.53 mi
2:03:32
Rank: #13483 (+351)
Half → 25K
19:06 | 7:53/mi
30K· 18.64 mi
2:28:09
Rank: #12882 (+601)
25K → 30K
24:37 | 7:55/mi
20M
2:38:45
Rank: #12533 (+349)
30K → 20M
10:36 | 7:48/mi
21M
2:46:53
Rank: #12241 (+292)
20M → 21M
8:08 | 8:08/mi
35K· 21.75 mi
2:52:31
Rank: #12099 (+142)
21M → 35K
5:38 | 7:32/mi
23M
3:02:20
Rank: #11874 (+225)
35K → 23M
9:49 | 7:50/mi
24M
3:09:46
Rank: #11639 (+235)
23M → 24M
7:26 | 7:26/mi
40K· 24.85 mi
3:16:17
Rank: #11458 (+181)
24M → 40K
6:31 | 7:37/mi
25.2M
3:19:10
Rank: #11394 (+64)
40K → 25.2M
2:53 | 8:22/mi
Finish· 26.22 mi
3:27:03
Rank: #11315 (+79)
25.2M → Finish
7:53 | 7:44/mi

The Course

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Half Splits

1st Half· via Half
Distance13.11 mi
Time1:44:26
Pace7:58 /mi
2nd Half✓ Faster
Distance13.11 mi
Time1:42:37
Pace7:50 /mi
📊Negative Split: 1.7% faster second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:55:4124:568:0224:56
8:02
-
10K
6.21 mi11:20:3749:528:0224:56
8:02
0:00
15K
9.32 mi11:45:091:14:247:5924:32
7:54
-0:08
20K
12.43 mi12:09:481:39:037:5824:39
7:56
+0:02
Half
13.11 mi12:15:111:44:267:585:23
7:53
-0:03
25K
15.53 mi12:34:172:03:327:5719:06
7:53
0:00
30K
18.64 mi12:58:542:28:097:5724:37
7:55
+0:02
20M
20.00 mi13:09:302:38:457:5610:36
7:48
-0:07
21M
21.00 mi13:17:382:46:537:578:08
8:08
+0:20
35K
21.75 mi13:23:162:52:317:565:38
7:32
-0:36
23M
23.00 mi13:33:053:02:207:569:49
7:50
+0:18
24M
24.00 mi13:40:313:09:467:547:26
7:26
-0:24
40K
24.85 mi13:47:023:16:177:546:31
7:37
+0:11
25.2M
25.20 mi13:49:553:19:107:542:53
8:22
+0:45
Finish
26.22 mi13:57:483:27:037:547:53
7:44
-0:38

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

7:26 /mi

Average Pace

7:54 /mi

Slowest Pace

8:22 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

3:24:10

99% of race

Time at Steady Pace

2:53

1% of race

Time at Slower Pace

0:00

0% of race

Average Pace: 7:54 /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 mi10:55:4124:568:0224:56
8:02
#14192
10K
6.21 mi11:20:3749:528:0224:56
8:02
#14559
15K
9.32 mi11:45:091:14:247:5924:32
7:54
#14241
20K
12.43 mi12:09:481:39:037:5824:39
7:56
#13861
Half
13.11 mi12:15:111:44:267:585:23
7:53
#13834
25K
15.53 mi12:34:172:03:327:5719:06
7:53
#13483
30K
18.64 mi12:58:542:28:097:5724:37
7:55
#12882
20M
20.00 mi13:09:302:38:457:5610:36
7:48
#12533
21M
21.00 mi13:17:382:46:537:578:08
8:08
#12241
35K
21.75 mi13:23:162:52:317:565:38
7:32
#12099
23M
23.00 mi13:33:053:02:207:569:49
7:50
#11874
24M
24.00 mi13:40:313:09:467:547:26
7:26
#11639
40K
24.85 mi13:47:023:16:177:546:31
7:37
#11458
25.2M
25.20 mi13:49:553:19:107:542:53
8:22
#11394
Finish
26.22 mi13:57:483:27:037:547:53
7:44
#11315
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF18-39Seg. OverallSeg. FemalesSeg. F18-39
5K3.11 mi3.11 mi141924140414013501(Top 51%)3774(Top 33%)3774(Top 77%)
10K6.21 mi3.10 mi14559-3674378-2384378-23814988(Top 56%)4661(Top 41%)4661(Top 95%)
15K9.32 mi3.11 mi14241+3184201+1774201+17713501(Top 51%)3774(Top 33%)3774(Top 77%)
20K12.43 mi3.11 mi13861+3803996+2053996+20512900(Top 48%)3485(Top 31%)3485(Top 71%)
Half13.11 mi0.68 mi13834+273984+123984+1213508(Top 51%)3784(Top 33%)3784(Top 77%)
25K15.53 mi2.42 mi13483+3513794+1903794+19011751(Top 44%)2925(Top 26%)2925(Top 60%)
30K18.64 mi3.11 mi12882+6013480+3143480+31410334(Top 39%)2324(Top 20%)2324(Top 48%)
20M20.00 mi1.36 mi12533+3493291+1893291+1898906(Top 33%)1773(Top 16%)1773(Top 36%)
21M21.00 mi1.00 mi12241+2923147+1443147+1448242(Top 31%)1638(Top 14%)1638(Top 34%)
35K21.75 mi0.75 mi12099+1423089+583089+588821(Top 33%)1854(Top 16%)1854(Top 38%)
23M23.00 mi1.25 mi11874+2252976+1132976+1138716(Top 33%)1899(Top 17%)1899(Top 39%)
24M24.00 mi1.00 mi11639+2352863+1132863+1137314(Top 27%)1423(Top 12%)1423(Top 29%)
40K24.85 mi0.85 mi11458+1812789+742789+747502(Top 28%)1575(Top 14%)1575(Top 32%)
25.2M25.20 mi0.35 mi11394+642770+192770+198756(Top 33%)2159(Top 19%)2159(Top 44%)
Finish26.22 mi1.02 mi11315+792746+242746+2410234(Top 38%)2811(Top 25%)2811(Top 58%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 51%
×21stories
+97ft-345ft

Overall

13501

Females

3774

F18-39

3774

5K→10K

3.1 - 6.2 mi

Top 56%
×5stories
+79ft-138ft

Overall

14988

Females

4661

F18-39

4661

10K→15K

6.2 - 9.3 mi

Top 51%
×3stories
+67ft-78ft

Overall

13501

Females

3774

F18-39

3774

15K→20K

9.3 - 12.4 mi

Top 48%
×5stories
+106ft-86ft

Overall

12900

Females

3485

F18-39

3485

20K→Half

12.4 - 13.1 mi

Top 51%
×2stories
+19ft-37ft

Overall

13508

Females

3784

F18-39

3784

Half→25K

13.1 - 15.5 mi

Top 44%
×4stories
+66ft-88ft

Overall

11751

Females

2925

F18-39

2925

25K→30K

15.5 - 18.6 mi

Top 39%
×9stories
+181ft-148ft

Overall

10334

Females

2324

F18-39

2324

30K→20M

18.6 - 20.0 mi

Top 33%
×5stories
+64ft-50ft

Overall

8906

Females

1773

F18-39

1773

20M→21M

20.0 - 21.0 mi

Top 31%
×8stories
+106ft-24ft

Overall

8242

Females

1638

F18-39

1638

21M→35K

21.0 - 21.8 mi

Top 33%
×7stories
+17ft-86ft

Overall

8821

Females

1854

F18-39

1854

35K→23M

21.8 - 23.0 mi

Top 33%
×5stories
+23ft-63ft

Overall

8716

Females

1899

F18-39

1899

23M→24M

23.0 - 24.0 mi

Top 27%
×6stories
+12ft-82ft

Overall

7314

Females

1423

F18-39

1423

24M→40K

24.0 - 24.9 mi

Top 28%
×1story
+6ft-20ft

Overall

7502

Females

1575

F18-39

1575

40K→25.2M

24.9 - 25.2 mi

Top 33%
×1story
+13ft-16ft

Overall

8756

Females

2159

F18-39

2159

25.2M→Finish

25.2 - 26.2 mi

Top 38%
×2stories
+22ft-21ft

Overall

10234

Females

2811

F18-39

2811

Passing Analysis

Category:
Athletes Passed
3600
Passed By
723
Net Change
+2877
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#14192
5K → 10K146513-367#14192#14559
10K → 15K38567+318#14559#14241
15K → 20K40929+380#14241#13861
20K → Half4821+27#13861#13834
Half → 25K36312+351#13834#13483
25K → 30K61615+601#13483#12882
30K → 20M3523+349#12882#12533
20M → 21M2953+292#12533#12241
21M → 35K1453+142#12241#12099
35K → 23M2338+225#12099#11874
23M → 24M2361+235#11874#11639
24M → 40K1887+181#11639#11458
40K → 25.2M728+64#11458#11394
25.2M → Finish11233+79#11394#11315
TOTALS3600723+2877
📊

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