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BOSTON MARATHON 2023

Jennifer Halls

Bib: 15604•F

TN

0:00
0:00
/ mi
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Overall
#0 / 26622
Top 44%
Gender (Female)
#0 / 11423
Top 26%
Division (F18-39)
#0 / 4884
Top 44%
Race Day Weather
49°/39°F
light intensity drizzle

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
24:00
Rank: #11693
Start → 5K
24:00 | 7:43/mi
10K· 6.21 mi
47:33
Rank: #11374 (+319)
5K → 10K
23:33 | 7:35/mi
15K· 9.32 mi
1:11:10
Rank: #11257 (+117)
10K → 15K
23:37 | 7:36/mi
20K· 12.43 mi
1:35:37
Rank: #11490 (-233)
15K → 20K
24:27 | 7:52/mi
Half· 13.11 mi
1:41:00
Rank: #11583 (-93)
20K → Half
5:23 | 7:53/mi
25K· 15.53 mi
2:00:34
Rank: #11823 (-240)
Half → 25K
19:34 | 8:04/mi
30K· 18.64 mi
2:26:18
Rank: #12022 (-199)
25K → 30K
25:44 | 8:17/mi
20M
2:37:41
Rank: #12086 (-64)
30K → 20M
11:23 | 8:23/mi
21M
2:46:33
Rank: #12103 (-17)
20M → 21M
8:52 | 8:52/mi
35K· 21.75 mi
2:52:30
Rank: #12094 (+9)
21M → 35K
5:57 | 7:57/mi
23M
3:02:53
Rank: #12059 (+35)
35K → 23M
10:23 | 8:18/mi
24M
3:10:40
Rank: #11948 (+111)
23M → 24M
7:47 | 7:47/mi
40K· 24.85 mi
3:17:39
Rank: #11909 (+39)
24M → 40K
6:59 | 8:10/mi
25.2M
3:20:38
Rank: #11873 (+36)
40K → 25.2M
2:59 | 8:39/mi
Finish· 26.22 mi
3:28:36
Rank: #11822 (+51)
25.2M → Finish
7:58 | 7:49/mi

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:41:00
Pace7:42 /mi
2nd Half
Distance13.11 mi
Time1:47:36
Pace8:12 /mi
📊Positive Split: 6.5% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:14:5524:007:4324:00
7:43
-
10K
6.21 mi11:38:2847:337:3923:33
7:35
-0:08
15K
9.32 mi12:02:051:11:107:3823:37
7:36
+0:01
20K
12.43 mi12:26:321:35:377:4224:27
7:52
+0:16
Half
13.11 mi12:31:551:41:007:425:23
7:53
+0:01
25K
15.53 mi12:51:292:00:347:4619:34
8:04
+0:11
30K
18.64 mi13:17:132:26:187:5125:44
8:17
+0:13
20M
20.00 mi13:28:362:37:417:5311:23
8:23
+0:06
21M
21.00 mi13:37:282:46:337:568:52
8:52
+0:29
35K
21.75 mi13:43:252:52:307:565:57
7:57
-0:55
23M
23.00 mi13:53:483:02:537:5710:23
8:18
+0:21
24M
24.00 mi14:01:353:10:407:577:47
7:47
-0:31
40K
24.85 mi14:08:343:17:397:576:59
8:10
+0:23
25.2M
25.20 mi14:11:333:20:387:582:59
8:39
+0:29
Finish
26.22 mi14:19:313:28:367:587:58
7:49
-0:50

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

7:35 /mi

Average Pace

7:58 /mi

Slowest Pace

8:52 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

3:05:22

89% of race

Time at Steady Pace

23:14

11% of race

Time at Slower Pace

0:00

0% of race

Average Pace: 7:57 /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 mi11:14:5524:007:4324:00
7:43
#11693
10K
6.21 mi11:38:2847:337:3923:33
7:35
#11374
15K
9.32 mi12:02:051:11:107:3823:37
7:36
#11257
20K
12.43 mi12:26:321:35:377:4224:27
7:52
#11490
Half
13.11 mi12:31:551:41:007:425:23
7:53
#11583
25K
15.53 mi12:51:292:00:347:4619:34
8:04
#11823
30K
18.64 mi13:17:132:26:187:5125:44
8:17
#12022
20M
20.00 mi13:28:362:37:417:5311:23
8:23
#12086
21M
21.00 mi13:37:282:46:337:568:52
8:52
#12103
35K
21.75 mi13:43:252:52:307:565:57
7:57
#12094
23M
23.00 mi13:53:483:02:537:5710:23
8:18
#12059
24M
24.00 mi14:01:353:10:407:577:47
7:47
#11948
40K
24.85 mi14:08:343:17:397:576:59
8:10
#11909
25.2M
25.20 mi14:11:333:20:387:582:59
8:39
#11873
Finish
26.22 mi14:19:313:28:367:587:58
7:49
#11822
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF18-39Seg. OverallSeg. FemalesSeg. F18-39
5K3.11 mi3.11 mi116932691269111053(Top 42%)2382(Top 21%)2382(Top 49%)
10K6.21 mi3.10 mi11374+3192533+1582533+15811163(Top 42%)2414(Top 21%)2414(Top 49%)
15K9.32 mi3.11 mi11257+1172470+632470+6311053(Top 42%)2382(Top 21%)2382(Top 49%)
20K12.43 mi3.11 mi11490-2332612-1422612-14212348(Top 46%)3164(Top 28%)3164(Top 65%)
Half13.11 mi0.68 mi11583-932675-632675-6313517(Top 51%)3793(Top 33%)3793(Top 78%)
25K15.53 mi2.42 mi11823-2402826-1512826-15113308(Top 50%)3806(Top 33%)3806(Top 78%)
30K18.64 mi3.11 mi12022-1992986-1602986-16012918(Top 49%)3702(Top 32%)3702(Top 76%)
20M20.00 mi1.36 mi12086-643050-643050-6412874(Top 48%)3784(Top 33%)3784(Top 77%)
21M21.00 mi1.00 mi12103-173068-183068-1812658(Top 48%)3754(Top 33%)3754(Top 77%)
35K21.75 mi0.75 mi12094+93086-183086-1811810(Top 44%)3317(Top 29%)3317(Top 68%)
23M23.00 mi1.25 mi12059+353091-53091-511857(Top 45%)3435(Top 30%)3435(Top 70%)
24M24.00 mi1.00 mi11948+1113049+423049+429705(Top 36%)2454(Top 21%)2454(Top 50%)
40K24.85 mi0.85 mi11909+393046+33046+311163(Top 42%)3233(Top 28%)3233(Top 66%)
25.2M25.20 mi0.35 mi11873+363032+143032+1410523(Top 40%)2949(Top 26%)2949(Top 60%)
Finish26.22 mi1.02 mi11822+513023+93023+910835(Top 41%)3109(Top 27%)3109(Top 64%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 42%
×21stories
+97ft-345ft

Overall

11053

Females

2382

F18-39

2382

5K→10K

3.1 - 6.2 mi

Top 42%
×5stories
+79ft-138ft

Overall

11163

Females

2414

F18-39

2414

10K→15K

6.2 - 9.3 mi

Top 42%
×3stories
+67ft-78ft

Overall

11053

Females

2382

F18-39

2382

15K→20K

9.3 - 12.4 mi

Top 46%
×5stories
+106ft-86ft

Overall

12348

Females

3164

F18-39

3164

20K→Half

12.4 - 13.1 mi

Top 51%
×2stories
+19ft-37ft

Overall

13517

Females

3793

F18-39

3793

Half→25K

13.1 - 15.5 mi

Top 50%
×4stories
+66ft-88ft

Overall

13308

Females

3806

F18-39

3806

25K→30K

15.5 - 18.6 mi

Top 49%
×9stories
+181ft-148ft

Overall

12918

Females

3702

F18-39

3702

30K→20M

18.6 - 20.0 mi

Top 48%
×5stories
+64ft-50ft

Overall

12874

Females

3784

F18-39

3784

20M→21M

20.0 - 21.0 mi

Top 48%
×8stories
+106ft-24ft

Overall

12658

Females

3754

F18-39

3754

21M→35K

21.0 - 21.8 mi

Top 44%
×7stories
+17ft-86ft

Overall

11810

Females

3317

F18-39

3317

35K→23M

21.8 - 23.0 mi

Top 45%
×5stories
+23ft-63ft

Overall

11857

Females

3435

F18-39

3435

23M→24M

23.0 - 24.0 mi

Top 36%
×6stories
+12ft-82ft

Overall

9705

Females

2454

F18-39

2454

24M→40K

24.0 - 24.9 mi

Top 42%
×1story
+6ft-20ft

Overall

11163

Females

3233

F18-39

3233

40K→25.2M

24.9 - 25.2 mi

Top 40%
×1story
+13ft-16ft

Overall

10523

Females

2949

F18-39

2949

25.2M→Finish

25.2 - 26.2 mi

Top 41%
×2stories
+22ft-21ft

Overall

10835

Females

3109

F18-39

3109

Passing Analysis

Category:
Athletes Passed
1710
Passed By
1839
Net Change
-129
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#11693
5K → 10K483164+319#11693#11374
10K → 15K238121+117#11374#11257
15K → 20K98331-233#11257#11490
20K → Half11104-93#11490#11583
Half → 25K71311-240#11583#11823
25K → 30K127326-199#11823#12022
30K → 20M91155-64#12022#12086
20M → 21M7491-17#12086#12103
21M → 35K5647+9#12103#12094
35K → 23M9863+35#12094#12059
23M → 24M13120+111#12059#11948
24M → 40K8445+39#11948#11909
40K → 25.2M4913+36#11909#11873
25.2M → Finish9948+51#11873#11822
TOTALS17101839-129
📊

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