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BOSTON MARATHON 2023

Jennifer Baldwin

Bib: 23513•F

MI

0:00
0:00
/ mi
Masters
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Overall
#0 / 26622
Gender (Female)
#0 / 11423
Masters (Masters Women)
#0 / 6539
Division (F55-59)
#0 / 815
Race Day Weather
49°/39°F
light intensity drizzle

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
27:38
Rank: #19970
Start → 5K
27:38 | 8:54/mi
10K· 6.21 mi
54:52
Rank: #19833 (+137)
5K → 10K
27:14 | 8:46/mi
15K· 9.32 mi
1:23:12
Rank: #20250 (-417)
10K → 15K
28:20 | 9:07/mi
20K· 12.43 mi
1:53:03
Rank: #20771 (-521)
15K → 20K
29:51 | 9:36/mi
Half· 13.11 mi
1:59:47
Rank: #20935 (-164)
20K → Half
6:44 | 9:52/mi
25K· 15.53 mi
2:23:32
Rank: #21091 (-156)
Half → 25K
23:45 | 9:48/mi
30K· 18.64 mi
2:54:37
Rank: #21069 (+22)
25K → 30K
31:05 | 10:00/mi
20M
3:08:20
Rank: #21024 (+45)
30K → 20M
13:43 | 10:06/mi
21M
3:19:33
Rank: #21035 (-11)
20M → 21M
11:13 | 11:13/mi
35K· 21.75 mi
3:27:05
Rank: #21053 (-18)
21M → 35K
7:32 | 10:04/mi
23M
3:40:44
Rank: #21115 (-62)
35K → 23M
13:39 | 10:54/mi
24M
3:50:45
Rank: #21085 (+30)
23M → 24M
10:01 | 10:01/mi
40K· 24.85 mi
3:59:18
Rank: #21047 (+38)
24M → 40K
8:33 | 10:00/mi
25.2M
4:03:08
Rank: #21043 (+4)
40K → 25.2M
3:50 | 11:07/mi
Finish· 26.22 mi
4:12:40
Rank: #20977 (+66)
25.2M → Finish
9:32 | 9:21/mi

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:59:47
Pace9:08 /mi
2nd Half
Distance13.11 mi
Time2:12:53
Pace10:08 /mi
📊Positive Split: 10.9% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:23:1927:388:5427:38
8:54
-
10K
6.21 mi11:50:3354:528:5027:14
8:46
-0:08
15K
9.32 mi12:18:531:23:128:5628:20
9:07
+0:21
20K
12.43 mi12:48:441:53:039:0629:51
9:36
+0:29
Half
13.11 mi12:55:281:59:479:086:44
9:52
+0:16
25K
15.53 mi13:19:132:23:329:1423:45
9:48
-0:04
30K
18.64 mi13:50:182:54:379:2231:05
10:00
+0:12
20M
20.00 mi14:04:013:08:209:2513:43
10:06
+0:06
21M
21.00 mi14:15:143:19:339:3011:13
11:13
+1:07
35K
21.75 mi14:22:463:27:059:317:32
10:04
-1:09
23M
23.00 mi14:36:253:40:449:3613:39
10:54
+0:50
24M
24.00 mi14:46:263:50:459:3710:01
10:01
-0:53
40K
24.85 mi14:54:593:59:189:388:33
10:00
-0:01
25.2M
25.20 mi14:58:494:03:089:393:50
11:07
+1:07
Finish
26.22 mi15:08:214:12:409:399:32
9:21
-1:46

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

8:46 /mi

Average Pace

9:39 /mi

Slowest Pace

11:13 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

2:02:35

49% of race

Time at Steady Pace

1:41:23

40% of race

Time at Slower Pace

28:42

11% of race

Average Pace: 9:38 /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 mi11:23:1927:388:5427:38
8:54
#19970
10K
6.21 mi11:50:3354:528:5027:14
8:46
#19833
15K
9.32 mi12:18:531:23:128:5628:20
9:07
#20250
20K
12.43 mi12:48:441:53:039:0629:51
9:36
#20771
Half
13.11 mi12:55:281:59:479:086:44
9:52
#20935
25K
15.53 mi13:19:132:23:329:1423:45
9:48
#21091
30K
18.64 mi13:50:182:54:379:2231:05
10:00
#21069
20M
20.00 mi14:04:013:08:209:2513:43
10:06
#21024
21M
21.00 mi14:15:143:19:339:3011:13
11:13
#21035
35K
21.75 mi14:22:463:27:059:317:32
10:04
#21053
23M
23.00 mi14:36:253:40:449:3613:39
10:54
#21115
24M
24.00 mi14:46:263:50:459:3710:01
10:01
#21085
40K
24.85 mi14:54:593:59:189:388:33
10:00
#21047
25.2M
25.20 mi14:58:494:03:089:393:50
11:07
#21043
Finish
26.22 mi15:08:214:12:409:399:32
9:21
#20977
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF55-59Seg. OverallSeg. FemalesSeg. F55-59
5K3.11 mi3.11 mi199707800780021024(Top 79%)8248(Top 72%)8248(Top 1012%)
10K6.21 mi3.10 mi19833+1377670+1307670+13019775(Top 74%)7566(Top 66%)7566(Top 928%)
15K9.32 mi3.11 mi20250-4177877-2077877-20721024(Top 79%)8248(Top 72%)8248(Top 1012%)
20K12.43 mi3.11 mi20771-5218147-2708147-27021890(Top 82%)8737(Top 76%)8737(Top 1072%)
Half13.11 mi0.68 mi20935-1648232-858232-8523024(Top 86%)9357(Top 82%)9357(Top 1148%)
25K15.53 mi2.42 mi21091-1568319-878319-8721729(Top 82%)8691(Top 76%)8691(Top 1066%)
30K18.64 mi3.11 mi21069+228323-48323-421046(Top 79%)8371(Top 73%)8371(Top 1027%)
20M20.00 mi1.36 mi21024+458308+158308+1520739(Top 78%)8273(Top 72%)8273(Top 1015%)
21M21.00 mi1.00 mi21035-118335-278335-2721312(Top 80%)8626(Top 76%)8626(Top 1058%)
35K21.75 mi0.75 mi21053-188358-238358-2321496(Top 81%)8762(Top 77%)8762(Top 1075%)
23M23.00 mi1.25 mi21115-628397-398397-3922159(Top 83%)9145(Top 80%)9145(Top 1122%)
24M24.00 mi1.00 mi21085+308392+58392+520844(Top 78%)8460(Top 74%)8460(Top 1038%)
40K24.85 mi0.85 mi21047+388387+58387+519978(Top 75%)8054(Top 71%)8054(Top 988%)
25.2M25.20 mi0.35 mi21043+48390-38390-320743(Top 78%)8449(Top 74%)8449(Top 1037%)
Finish26.22 mi1.02 mi20977+668356+348356+3419625(Top 74%)7797(Top 68%)7797(Top 957%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 79%
×21stories
+97ft-345ft

Overall

21024

Females

8248

F55-59

8248

5K→10K

3.1 - 6.2 mi

Top 74%
×5stories
+79ft-138ft

Overall

19775

Females

7566

F55-59

7566

10K→15K

6.2 - 9.3 mi

Top 79%
×3stories
+67ft-78ft

Overall

21024

Females

8248

F55-59

8248

15K→20K

9.3 - 12.4 mi

Top 82%
×5stories
+106ft-86ft

Overall

21890

Females

8737

F55-59

8737

20K→Half

12.4 - 13.1 mi

Top 86%
×2stories
+19ft-37ft

Overall

23024

Females

9357

F55-59

9357

Half→25K

13.1 - 15.5 mi

Top 82%
×4stories
+66ft-88ft

Overall

21729

Females

8691

F55-59

8691

25K→30K

15.5 - 18.6 mi

Top 79%
×9stories
+181ft-148ft

Overall

21046

Females

8371

F55-59

8371

30K→20M

18.6 - 20.0 mi

Top 78%
×5stories
+64ft-50ft

Overall

20739

Females

8273

F55-59

8273

20M→21M

20.0 - 21.0 mi

Top 80%
×8stories
+106ft-24ft

Overall

21312

Females

8626

F55-59

8626

21M→35K

21.0 - 21.8 mi

Top 81%
×7stories
+17ft-86ft

Overall

21496

Females

8762

F55-59

8762

35K→23M

21.8 - 23.0 mi

Top 83%
×5stories
+23ft-63ft

Overall

22159

Females

9145

F55-59

9145

23M→24M

23.0 - 24.0 mi

Top 78%
×6stories
+12ft-82ft

Overall

20844

Females

8460

F55-59

8460

24M→40K

24.0 - 24.9 mi

Top 75%
×1story
+6ft-20ft

Overall

19978

Females

8054

F55-59

8054

40K→25.2M

24.9 - 25.2 mi

Top 78%
×1story
+13ft-16ft

Overall

20743

Females

8449

F55-59

8449

25.2M→Finish

25.2 - 26.2 mi

Top 74%
×2stories
+22ft-21ft

Overall

19625

Females

7797

F55-59

7797

Passing Analysis

Category:
Athletes Passed
1152
Passed By
2159
Net Change
-1007
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#19970
5K → 10K377240+137#19970#19833
10K → 15K69486-417#19833#20250
15K → 20K52573-521#20250#20771
20K → Half7171-164#20771#20935
Half → 25K53209-156#20935#21091
25K → 30K151129+22#21091#21069
30K → 20M9449+45#21069#21024
20M → 21M5970-11#21024#21035
21M → 35K3452-18#21035#21053
35K → 23M38100-62#21053#21115
23M → 24M5626+30#21115#21085
24M → 40K6224+38#21085#21047
40K → 25.2M2016+4#21047#21043
25.2M → Finish8014+66#21043#20977
TOTALS11522159-1007
📊

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