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BOSTON MARATHON 2023

Jennifer Liaros

Bib: 7647•F

NY

0:00
0:00
/ mi
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Overall
#0 / 26622
Top 32%
Gender (Female)
#0 / 11423
Top 13%
Division (F18-39)
#0 / 4884
Top 24%
Race Day Weather
49°/39°F
light intensity drizzle

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
22:34
Rank: #7906
Start → 5K
22:34 | 7:16/mi
10K· 6.21 mi
45:13
Rank: #8304 (-398)
5K → 10K
22:39 | 7:17/mi
15K· 9.32 mi
1:08:18
Rank: #8676 (-372)
10K → 15K
23:05 | 7:26/mi
20K· 12.43 mi
1:31:49
Rank: #8909 (-233)
15K → 20K
23:31 | 7:34/mi
Half· 13.11 mi
1:36:54
Rank: #8946 (-37)
20K → Half
5:05 | 7:27/mi
25K· 15.53 mi
1:55:16
Rank: #8982 (-36)
Half → 25K
18:22 | 7:35/mi
30K· 18.64 mi
2:18:51
Rank: #8740 (+242)
25K → 30K
23:35 | 7:35/mi
20M
2:29:18
Rank: #8678 (+62)
30K → 20M
10:27 | 7:41/mi
21M
2:37:31
Rank: #8647 (+31)
20M → 21M
8:13 | 8:13/mi
35K· 21.75 mi
2:43:06
Rank: #8635 (+12)
21M → 35K
5:35 | 7:28/mi
23M
2:53:04
Rank: #8664 (-29)
35K → 23M
9:58 | 7:58/mi
24M
3:00:38
Rank: #8615 (+49)
23M → 24M
7:34 | 7:34/mi
40K· 24.85 mi
3:07:19
Rank: #8608 (+7)
24M → 40K
6:41 | 7:49/mi
25.2M
3:10:24
Rank: #8651 (-43)
40K → 25.2M
3:05 | 8:56/mi
Finish· 26.22 mi
3:18:03
Rank: #8626 (+25)
25.2M → Finish
7:39 | 7:30/mi

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:36:54
Pace7:23 /mi
2nd Half
Distance13.11 mi
Time1:41:09
Pace7:43 /mi
📊Positive Split: 4.4% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:27:2022:347:1622:34
7:16
-
10K
6.21 mi10:49:5945:137:1722:39
7:17
+0:01
15K
9.32 mi11:13:041:08:187:2023:05
7:26
+0:09
20K
12.43 mi11:36:351:31:497:2323:31
7:34
+0:08
Half
13.11 mi11:41:401:36:547:235:05
7:27
-0:07
25K
15.53 mi12:00:021:55:167:2518:22
7:35
+0:08
30K
18.64 mi12:23:372:18:517:2723:35
7:35
0:00
20M
20.00 mi12:34:042:29:187:2810:27
7:41
+0:06
21M
21.00 mi12:42:172:37:317:308:13
8:13
+0:32
35K
21.75 mi12:47:522:43:067:305:35
7:28
-0:45
23M
23.00 mi12:57:502:53:047:319:58
7:58
+0:30
24M
24.00 mi13:05:243:00:387:327:34
7:34
-0:24
40K
24.85 mi13:12:053:07:197:326:41
7:49
+0:15
25.2M
25.20 mi13:15:103:10:247:333:05
8:56
+1:07
Finish
26.22 mi13:22:493:18:037:347:39
7:30
-1:26

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

7:16 /mi

Average Pace

7:34 /mi

Slowest Pace

8:56 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

45:13

23% of race

Time at Steady Pace

2:04:53

63% of race

Time at Slower Pace

27:57

14% of race

Average Pace: 7:33 /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 mi10:27:2022:347:1622:34
7:16
#7906
10K
6.21 mi10:49:5945:137:1722:39
7:17
#8304
15K
9.32 mi11:13:041:08:187:2023:05
7:26
#8676
20K
12.43 mi11:36:351:31:497:2323:31
7:34
#8909
Half
13.11 mi11:41:401:36:547:235:05
7:27
#8946
25K
15.53 mi12:00:021:55:167:2518:22
7:35
#8982
30K
18.64 mi12:23:372:18:517:2723:35
7:35
#8740
20M
20.00 mi12:34:042:29:187:2810:27
7:41
#8678
21M
21.00 mi12:42:172:37:317:308:13
8:13
#8647
35K
21.75 mi12:47:522:43:067:305:35
7:28
#8635
23M
23.00 mi12:57:502:53:047:319:58
7:58
#8664
24M
24.00 mi13:05:243:00:387:327:34
7:34
#8615
40K
24.85 mi13:12:053:07:197:326:41
7:49
#8608
25.2M
25.20 mi13:15:103:10:247:333:05
8:56
#8651
Finish
26.22 mi13:22:493:18:037:347:39
7:30
#8626
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF18-39Seg. OverallSeg. FemalesSeg. F18-39
5K3.11 mi3.11 mi79069879879612(Top 36%)1668(Top 15%)1668(Top 34%)
10K6.21 mi3.10 mi8304-3981146-1591146-1598811(Top 33%)1338(Top 12%)1338(Top 27%)
15K9.32 mi3.11 mi8676-3721291-1451291-1459612(Top 36%)1668(Top 15%)1668(Top 34%)
20K12.43 mi3.11 mi8909-2331401-1101401-1109852(Top 37%)1843(Top 16%)1843(Top 38%)
Half13.11 mi0.68 mi8946-371422-211422-219858(Top 37%)1813(Top 16%)1813(Top 37%)
25K15.53 mi2.42 mi8982-361438-161438-169359(Top 35%)1708(Top 15%)1708(Top 35%)
30K18.64 mi3.11 mi8740+2421385+531385+537893(Top 30%)1265(Top 11%)1265(Top 26%)
20M20.00 mi1.36 mi8678+62138513858127(Top 31%)1448(Top 13%)1448(Top 30%)
21M21.00 mi1.00 mi8647+311392-71392-78713(Top 33%)1798(Top 16%)1798(Top 37%)
35K21.75 mi0.75 mi8635+121397-51397-58307(Top 31%)1609(Top 14%)1609(Top 33%)
23M23.00 mi1.25 mi8664-291434-371434-379492(Top 36%)2257(Top 20%)2257(Top 46%)
24M24.00 mi1.00 mi8615+491435-11435-18186(Top 31%)1751(Top 15%)1751(Top 36%)
40K24.85 mi0.85 mi8608+71452-171452-178803(Top 33%)2080(Top 18%)2080(Top 43%)
25.2M25.20 mi0.35 mi8651-431480-281480-2812185(Top 46%)3798(Top 33%)3798(Top 78%)
Finish26.22 mi1.02 mi8626+251491-111491-118621(Top 32%)2071(Top 18%)2071(Top 42%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 36%
×21stories
+97ft-345ft

Overall

9612

Females

1668

F18-39

1668

5K→10K

3.1 - 6.2 mi

Top 33%
×5stories
+79ft-138ft

Overall

8811

Females

1338

F18-39

1338

10K→15K

6.2 - 9.3 mi

Top 36%
×3stories
+67ft-78ft

Overall

9612

Females

1668

F18-39

1668

15K→20K

9.3 - 12.4 mi

Top 37%
×5stories
+106ft-86ft

Overall

9852

Females

1843

F18-39

1843

20K→Half

12.4 - 13.1 mi

Top 37%
×2stories
+19ft-37ft

Overall

9858

Females

1813

F18-39

1813

Half→25K

13.1 - 15.5 mi

Top 35%
×4stories
+66ft-88ft

Overall

9359

Females

1708

F18-39

1708

25K→30K

15.5 - 18.6 mi

Top 30%
×9stories
+181ft-148ft

Overall

7893

Females

1265

F18-39

1265

30K→20M

18.6 - 20.0 mi

Top 31%
×5stories
+64ft-50ft

Overall

8127

Females

1448

F18-39

1448

20M→21M

20.0 - 21.0 mi

Top 33%
×8stories
+106ft-24ft

Overall

8713

Females

1798

F18-39

1798

21M→35K

21.0 - 21.8 mi

Top 31%
×7stories
+17ft-86ft

Overall

8307

Females

1609

F18-39

1609

35K→23M

21.8 - 23.0 mi

Top 36%
×5stories
+23ft-63ft

Overall

9492

Females

2257

F18-39

2257

23M→24M

23.0 - 24.0 mi

Top 31%
×6stories
+12ft-82ft

Overall

8186

Females

1751

F18-39

1751

24M→40K

24.0 - 24.9 mi

Top 33%
×1story
+6ft-20ft

Overall

8803

Females

2080

F18-39

2080

40K→25.2M

24.9 - 25.2 mi

Top 46%
×1story
+13ft-16ft

Overall

12185

Females

3798

F18-39

3798

25.2M→Finish

25.2 - 26.2 mi

Top 32%
×2stories
+22ft-21ft

Overall

8621

Females

2071

F18-39

2071

Passing Analysis

Category:
Athletes Passed
1145
Passed By
1865
Net Change
-720
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#7906
5K → 10K81479-398#7906#8304
10K → 15K49421-372#8304#8676
15K → 20K64297-233#8676#8909
20K → Half1653-37#8909#8946
Half → 25K93129-36#8946#8982
25K → 30K29553+242#8982#8740
30K → 20M10543+62#8740#8678
20M → 21M8655+31#8678#8647
21M → 35K4735+12#8647#8635
35K → 23M7099-29#8635#8664
23M → 24M9445+49#8664#8615
24M → 40K5750+7#8615#8608
40K → 25.2M1356-43#8608#8651
25.2M → Finish7550+25#8651#8626
TOTALS11451865-720
📊

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