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BOSTON MARATHON 2023

Jennifer Lee

Bib: 13346•F

CA

0:00
0:00
/ mi
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Overall
#0 / 26622
Top 46%
Gender (Female)
#0 / 11423
Top 28%
Division (F18-39)
#0 / 4884
Top 46%
Race Day Weather
49°/39°F
light intensity drizzle

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
24:40
Rank: #13590
Start → 5K
7:56/mi
24:40 split
10K· 6.21 mi
48:57
Rank: #13405 (+185)
5K → 10K
7:49/mi
24:17 split
15K· 9.32 mi
1:13:48
Rank: #13724 (-319)
10K → 15K
8:00/mi
24:51 split
20K· 12.43 mi
1:38:50
Rank: #13727 (-3)
15K → 20K
8:03/mi
25:02 split
Half· 13.11 mi
1:44:19
Rank: #13767 (-40)
20K → Half
8:02/mi
5:29 split
25K· 15.53 mi
2:03:59
Rank: #13727 (+40)
Half → 25K
8:07/mi
19:40 split
30K· 18.64 mi
2:29:14
Rank: #13342 (+385)
25K → 30K
8:08/mi
25:15 split
20M
2:40:20
Rank: #13181 (+161)
30K → 20M
8:10/mi
11:06 split
21M
2:48:38
Rank: #12903 (+278)
20M → 21M
8:18/mi
8:18 split
35K· 21.75 mi
2:54:26
Rank: #12787 (+116)
21M → 35K
7:45/mi
5:48 split
23M
3:04:12
Rank: #12507 (+280)
35K → 23M
7:48/mi
9:46 split
24M
3:11:56
Rank: #12359 (+148)
23M → 24M
7:44/mi
7:44 split
40K· 24.85 mi
3:18:40
Rank: #12231 (+128)
24M → 40K
7:53/mi
6:44 split
25.2M
3:21:37
Rank: #12182 (+49)
40K → 25.2M
8:33/mi
2:57 split
Finish· 26.22 mi
3:29:44
Rank: #12174 (+8)
25.2M → Finish
7:58/mi
8:07 split

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:44:19
Pace7:57 /mi
2nd Half
Distance13.11 mi
Time1:45:25
Pace8:02 /mi
📊Positive Split: 1.1% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:15:0724:407:5624:40
7:56
-
10K
6.21 mi11:39:2448:577:5324:17
7:49
-0:07
15K
9.32 mi12:04:151:13:487:5524:51
8:00
+0:11
20K
12.43 mi12:29:171:38:507:5725:02
8:03
+0:03
Half
13.11 mi12:34:461:44:197:575:29
8:02
-0:01
25K
15.53 mi12:54:262:03:597:5919:40
8:07
+0:05
30K
18.64 mi13:19:412:29:148:0025:15
8:08
+0:01
20M
20.00 mi13:30:472:40:208:0111:06
8:10
+0:02
21M
21.00 mi13:39:052:48:388:028:18
8:18
+0:08
35K
21.75 mi13:44:532:54:268:015:48
7:45
-0:33
23M
23.00 mi13:54:393:04:128:019:46
7:48
+0:03
24M
24.00 mi14:02:233:11:568:007:44
7:44
-0:04
40K
24.85 mi14:09:073:18:408:006:44
7:53
+0:09
25.2M
25.20 mi14:12:043:21:378:002:57
8:33
+0:40
Finish
26.22 mi14:20:113:29:448:008:07
7:58
-0:35

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

7:44 /mi

Average Pace

8:00 /mi

Slowest Pace

8:33 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

3:26:47

99% of race

Time at Steady Pace

2:57

1% of race

Time at Slower Pace

0:00

0% of race

Average Pace: 8:00 /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 mi11:15:0724:407:5624:40
7:56
#13590
10K
6.21 mi11:39:2448:577:5324:17
7:49
#13405
15K
9.32 mi12:04:151:13:487:5524:51
8:00
#13724
20K
12.43 mi12:29:171:38:507:5725:02
8:03
#13727
Half
13.11 mi12:34:461:44:197:575:29
8:02
#13767
25K
15.53 mi12:54:262:03:597:5919:40
8:07
#13727
30K
18.64 mi13:19:412:29:148:0025:15
8:08
#13342
20M
20.00 mi13:30:472:40:208:0111:06
8:10
#13181
21M
21.00 mi13:39:052:48:388:028:18
8:18
#12903
35K
21.75 mi13:44:532:54:268:015:48
7:45
#12787
23M
23.00 mi13:54:393:04:128:019:46
7:48
#12507
24M
24.00 mi14:02:233:11:568:007:44
7:44
#12359
40K
24.85 mi14:09:073:18:408:006:44
7:53
#12231
25.2M
25.20 mi14:12:043:21:378:002:57
8:33
#12182
Finish
26.22 mi14:20:113:29:448:008:07
7:58
#12174
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF18-39Seg. OverallSeg. FemalesSeg. F18-39
5K3.11 mi3.11 mi135903773377314378(Top 54%)4309(Top 38%)4309(Top 88%)
10K6.21 mi3.10 mi13405+1853683+903683+9013273(Top 50%)3591(Top 31%)3591(Top 74%)
15K9.32 mi3.11 mi13724-3193897-2143897-21414378(Top 54%)4309(Top 38%)4309(Top 88%)
20K12.43 mi3.11 mi13727-33922-253922-2513898(Top 52%)4045(Top 35%)4045(Top 83%)
Half13.11 mi0.68 mi13767-403939-173939-1714667(Top 55%)4463(Top 39%)4463(Top 91%)
25K15.53 mi2.42 mi13727+403941-23941-213580(Top 51%)3966(Top 35%)3966(Top 81%)
30K18.64 mi3.11 mi13342+3853748+1933748+19311845(Top 44%)3093(Top 27%)3093(Top 63%)
20M20.00 mi1.36 mi13181+1613668+803668+8011499(Top 43%)3005(Top 26%)3005(Top 62%)
21M21.00 mi1.00 mi12903+2783530+1383530+1389268(Top 35%)2045(Top 18%)2045(Top 42%)
35K21.75 mi0.75 mi12787+1163478+523478+5210368(Top 39%)2557(Top 22%)2557(Top 52%)
23M23.00 mi1.25 mi12507+2803333+1453333+1458463(Top 32%)1790(Top 16%)1790(Top 37%)
24M24.00 mi1.00 mi12359+1483272+613272+619347(Top 35%)2277(Top 20%)2277(Top 47%)
40K24.85 mi0.85 mi12231+1283219+533219+539225(Top 35%)2287(Top 20%)2287(Top 47%)
25.2M25.20 mi0.35 mi12182+493204+153204+159964(Top 37%)2680(Top 23%)2680(Top 55%)
Finish26.22 mi1.02 mi12174+83223-193223-1911888(Top 45%)3645(Top 32%)3645(Top 75%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 54%
×21stories
+97ft-345ft

Overall

14378

Females

4309

F18-39

4309

5K→10K

3.1 - 6.2 mi

Top 50%
×5stories
+79ft-138ft

Overall

13273

Females

3591

F18-39

3591

10K→15K

6.2 - 9.3 mi

Top 54%
×3stories
+67ft-78ft

Overall

14378

Females

4309

F18-39

4309

15K→20K

9.3 - 12.4 mi

Top 52%
×5stories
+106ft-86ft

Overall

13898

Females

4045

F18-39

4045

20K→Half

12.4 - 13.1 mi

Top 55%
×2stories
+19ft-37ft

Overall

14667

Females

4463

F18-39

4463

Half→25K

13.1 - 15.5 mi

Top 51%
×4stories
+66ft-88ft

Overall

13580

Females

3966

F18-39

3966

25K→30K

15.5 - 18.6 mi

Top 44%
×9stories
+181ft-148ft

Overall

11845

Females

3093

F18-39

3093

30K→20M

18.6 - 20.0 mi

Top 43%
×5stories
+64ft-50ft

Overall

11499

Females

3005

F18-39

3005

20M→21M

20.0 - 21.0 mi

Top 35%
×8stories
+106ft-24ft

Overall

9268

Females

2045

F18-39

2045

21M→35K

21.0 - 21.8 mi

Top 39%
×7stories
+17ft-86ft

Overall

10368

Females

2557

F18-39

2557

35K→23M

21.8 - 23.0 mi

Top 32%
×5stories
+23ft-63ft

Overall

8463

Females

1790

F18-39

1790

23M→24M

23.0 - 24.0 mi

Top 35%
×6stories
+12ft-82ft

Overall

9347

Females

2277

F18-39

2277

24M→40K

24.0 - 24.9 mi

Top 35%
×1story
+6ft-20ft

Overall

9225

Females

2287

F18-39

2287

40K→25.2M

24.9 - 25.2 mi

Top 37%
×1story
+13ft-16ft

Overall

9964

Females

2680

F18-39

2680

25.2M→Finish

25.2 - 26.2 mi

Top 45%
×2stories
+22ft-21ft

Overall

11888

Females

3645

F18-39

3645

Passing Analysis

Category:
Athletes Passed
2570
Passed By
1154
Net Change
+1416
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#13590
5K → 10K402217+185#13590#13405
10K → 15K94413-319#13405#13724
15K → 20K175178-3#13724#13727
20K → Half1656-40#13727#13767
Half → 25K154114+40#13767#13727
25K → 30K41934+385#13727#13342
30K → 20M17716+161#13342#13181
20M → 21M2879+278#13181#12903
21M → 35K1248+116#12903#12787
35K → 23M2822+280#12787#12507
23M → 24M1546+148#12507#12359
24M → 40K1357+128#12359#12231
40K → 25.2M6213+49#12231#12182
25.2M → Finish8981+8#12182#12174
TOTALS25701154+1416
📊

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