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BOSTON MARATHON 2023

Jennifer Black

Bib: 24623•F

OH

0:00
0:00
/ mi
Masters
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Overall
#0 / 26622
Gender (Female)
#0 / 11423
Masters (Masters Women)
#0 / 6539
Division (F70-74)
#0 / 62
Race Day Weather
49°/39°F
light intensity drizzle

⏱️ Race Timeline

Course Elevation
7–469 ft
≈
×2stacked redwood trees
•▲ 890 ft climb · ▼ 1342 ft descent
Ribbon color based on
FasterSteadySlower· vs. your average pace
Start
0:00
Race begins
5K· 3.11 mi
10:49/mi
33:35
↑ 97↓ 3451.5%
10K· 6.21 mi
10:58/mi
1:07:40
↑ 79↓ 1380.4%
15K· 9.32 mi
11:35/mi
1:43:38
↑ 67↓ 78
20K· 12.43 mi
12:08/mi
2:21:20
↑ 106↓ 860.1%
Half· 13.11 mi
11:11/mi
2:28:58
↑ 19↓ 370.5%
25K· 15.53 mi
11:43/mi
2:57:23
↑ 66↓ 880.2%
30K· 18.64 mi
12:30/mi
3:36:14
↑ 181↓ 1480.2%
20M
12:41/mi
3:53:28
↑ 64↓ 500.2%
21M
14:40/mi
4:08:08
↑ 106↓ 241.6%
35K· 21.75 mi
12:30/mi
4:17:29
↑ 17↓ 861.7%
23M
14:03/mi
4:35:05
↑ 23↓ 630.6%
24M
11:57/mi
4:47:02
↓ 821.3%
40K· 24.85 mi
12:45/mi
4:57:56
↓ 200.3%
25.2M
13:06/mi
5:02:27
↑ 13↓ 160.2%
Finish· 26.22 mi
11:35/mi
5:14:15
↑ 22↓ 21

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time2:28:58
Pace11:22 /mi
2nd Half
Distance13.11 mi
Time2:45:17
Pace12:36 /mi
📊Positive Split: 11.0% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:55:5733:3510:4933:35
10:49
-
10K
6.21 mi12:30:021:07:4010:5334:05
10:58
+0:09
15K
9.32 mi13:06:001:43:3811:0735:58
11:35
+0:37
20K
12.43 mi13:43:422:21:2011:2237:42
12:08
+0:33
Half
13.11 mi13:51:202:28:5811:227:38
11:11
-0:57
25K
15.53 mi14:19:452:57:2311:2528:25
11:43
+0:32
30K
18.64 mi14:58:363:36:1411:3638:51
12:30
+0:47
20M
20.00 mi15:15:503:53:2811:4017:14
12:41
+0:11
21M
21.00 mi15:30:304:08:0811:4914:40
14:40
+1:59
35K
21.75 mi15:39:514:17:2911:509:21
12:30
-2:10
23M
23.00 mi15:57:274:35:0511:5817:36
14:03
+1:33
24M
24.00 mi16:09:244:47:0211:5811:57
11:57
-2:06
40K
24.85 mi16:20:184:57:5611:5910:54
12:45
+0:48
25.2M
25.20 mi16:24:495:02:2712:004:31
13:06
+0:21
Finish
26.22 mi16:36:375:14:1512:0011:48
11:35
-1:31

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

10:49 /mi

Average Pace

12:00 /mi

Slowest Pace

14:40 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

2:03:04

39% of race

Time at Steady Pace

2:06:16

40% of race

Time at Slower Pace

1:04:55

21% of race

Average Pace: 11:59 /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 mi11:55:5733:3510:4933:35
10:49
#25382
10K
6.21 mi12:30:021:07:4010:5334:05
10:58
#25435
15K
9.32 mi13:06:001:43:3811:0735:58
11:35
#25598
20K
12.43 mi13:43:422:21:2011:2237:42
12:08
#25671
Half
13.11 mi13:51:202:28:5811:227:38
11:11
#25637
25K
15.53 mi14:19:452:57:2311:2528:25
11:43
#25516
30K
18.64 mi14:58:363:36:1411:3638:51
12:30
#25426
20M
20.00 mi15:15:503:53:2811:4017:14
12:41
#25410
21M
21.00 mi15:30:304:08:0811:4914:40
14:40
#25426
35K
21.75 mi15:39:514:17:2911:509:21
12:30
#25425
23M
23.00 mi15:57:274:35:0511:5817:36
14:03
#25477
24M
24.00 mi16:09:244:47:0211:5811:57
11:57
#25446
40K
24.85 mi16:20:184:57:5611:5910:54
12:45
#25422
25.2M
25.20 mi16:24:495:02:2712:004:31
13:06
#25407
Finish
26.22 mi16:36:375:14:1512:0011:48
11:35
#25396
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF70-74Seg. OverallSeg. FemalesSeg. F70-74
5K3.11 mi3.11 mi25382106651066525783(Top 97%)10909(Top 96%)10909(Top 17595%)
10K6.21 mi3.10 mi25435-5310691-2610691-2625437(Top 96%)10694(Top 94%)10694(Top 17248%)
15K9.32 mi3.11 mi25598-16310794-10310794-10325783(Top 97%)10909(Top 96%)10909(Top 17595%)
20K12.43 mi3.11 mi25671-7310854-6010854-6025732(Top 97%)10909(Top 96%)10909(Top 17595%)
Half13.11 mi0.68 mi25637+3410831+2310831+2325201(Top 95%)10613(Top 93%)10613(Top 17118%)
25K15.53 mi2.42 mi25516+12110770+6110770+6124908(Top 94%)10466(Top 92%)10466(Top 16881%)
30K18.64 mi3.11 mi25426+9010735+3510735+3525006(Top 94%)10568(Top 93%)10568(Top 17045%)
20M20.00 mi1.36 mi25410+1610734+110734+124905(Top 94%)10554(Top 92%)10554(Top 17023%)
21M21.00 mi1.00 mi25426-1610747-1310747-1325536(Top 96%)10872(Top 95%)10872(Top 17535%)
35K21.75 mi0.75 mi25425+110750-310750-325181(Top 95%)10749(Top 94%)10749(Top 17337%)
23M23.00 mi1.25 mi25477-5210781-3110781-3125864(Top 97%)11077(Top 97%)11077(Top 17866%)
24M24.00 mi1.00 mi25446+3110765+1610765+1624464(Top 92%)10415(Top 91%)10415(Top 16798%)
40K24.85 mi0.85 mi25422+2410754+1110754+1124731(Top 93%)10539(Top 92%)10539(Top 16998%)
25.2M25.20 mi0.35 mi25407+1510750+410750+424106(Top 91%)10245(Top 90%)10245(Top 16524%)
Finish26.22 mi1.02 mi25396+1110749+110749+124795(Top 93%)10558(Top 92%)10558(Top 17029%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 97%
×21story building
+97ft-345ft

Overall

25783

Females

10909

F70-74

10909

5K→10K

3.1 - 6.2 mi

Top 96%
×5story building
+79ft-138ft

Overall

25437

Females

10694

F70-74

10694

10K→15K

6.2 - 9.3 mi

Top 97%
×3story building
+67ft-78ft

Overall

25783

Females

10909

F70-74

10909

15K→20K

9.3 - 12.4 mi

Top 97%
×5story building
+106ft-86ft

Overall

25732

Females

10909

F70-74

10909

20K→Half

12.4 - 13.1 mi

Top 95%
×2story building
+19ft-37ft

Overall

25201

Females

10613

F70-74

10613

Half→25K

13.1 - 15.5 mi

Top 94%
×4story building
+66ft-88ft

Overall

24908

Females

10466

F70-74

10466

25K→30K

15.5 - 18.6 mi

Top 94%
×9story building
+181ft-148ft

Overall

25006

Females

10568

F70-74

10568

30K→20M

18.6 - 20.0 mi

Top 94%
×5story building
+64ft-50ft

Overall

24905

Females

10554

F70-74

10554

20M→21M

20.0 - 21.0 mi

Top 96%
×8story building
+106ft-24ft

Overall

25536

Females

10872

F70-74

10872

21M→35K

21.0 - 21.8 mi

Top 95%
×7story building
+17ft-86ft

Overall

25181

Females

10749

F70-74

10749

35K→23M

21.8 - 23.0 mi

Top 97%
×5story building
+23ft-63ft

Overall

25864

Females

11077

F70-74

11077

23M→24M

23.0 - 24.0 mi

Top 92%
×6story building
+12ft-82ft

Overall

24464

Females

10415

F70-74

10415

24M→40K

24.0 - 24.9 mi

Top 93%
×1story
+6ft-20ft

Overall

24731

Females

10539

F70-74

10539

40K→25.2M

24.9 - 25.2 mi

Top 91%
×1story
+13ft-16ft

Overall

24106

Females

10245

F70-74

10245

25.2M→Finish

25.2 - 26.2 mi

Top 93%
×2story building
+22ft-21ft

Overall

24795

Females

10558

F70-74

10558

Passing Analysis

Category:
Athletes Passed
720
Passed By
734
Net Change
-14
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#25382
5K → 10K127180-53#25382#25435
10K → 15K49212-163#25435#25598
15K → 20K62135-73#25598#25671
20K → Half395+34#25671#25637
Half → 25K13817+121#25637#25516
25K → 30K11525+90#25516#25426
30K → 20M4024+16#25426#25410
20M → 21M2036-16#25410#25426
21M → 35K2019+1#25426#25425
35K → 23M759-52#25425#25477
23M → 24M343+31#25477#25446
24M → 40K295+24#25446#25422
40K → 25.2M161+15#25422#25407
25.2M → Finish2413+11#25407#25396
TOTALS720734-14
📊

Passing Visuals

Category:
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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