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BOSTON MARATHON 2023

Jennifer Sober

Bib: 9402•F

FL

0:00
0:00
/ mi
Masters
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Overall
#0 / 26622
Top 17%
Gender (Female)
#0 / 11423
Top 3%
Masters (Masters Women)
#0 / 6539
Top 0.8%
Division (F45-49)
#0 / 1817
Top 0.6%
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
6:51/mi
21:16
↑ 97↓ 3451.5%
10K· 6.21 mi
6:38/mi
41:54
↑ 79↓ 1380.4%
15K· 9.32 mi
6:39/mi
1:02:35
↑ 67↓ 78
20K· 12.43 mi
6:40/mi
1:23:17
↑ 106↓ 860.1%
Half· 13.11 mi
6:42/mi
1:27:51
↑ 19↓ 370.5%
25K· 15.53 mi
6:46/mi
1:44:16
↑ 66↓ 880.2%
30K· 18.64 mi
6:59/mi
2:05:58
↑ 181↓ 1480.2%
20M
7:10/mi
2:15:43
↑ 64↓ 500.2%
21M
7:36/mi
2:23:19
↑ 106↓ 241.6%
35K· 21.75 mi
7:00/mi
2:28:33
↑ 17↓ 861.7%
23M
7:15/mi
2:37:38
↑ 23↓ 630.6%
24M
7:15/mi
2:44:53
↓ 821.3%
40K· 24.85 mi
7:29/mi
2:51:17
↓ 200.3%
25.2M
8:13/mi
2:54:07
↑ 13↓ 160.2%
Finish· 26.22 mi
7:27/mi
3:01:43
↑ 22↓ 21

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:27:51
Pace6:42 /mi
2nd Half
Distance13.11 mi
Time1:33:52
Pace7:10 /mi
📊Positive Split: 6.8% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:47:0321:166:5121:16
6:51
-
10K
6.21 mi11:07:4141:546:4520:38
6:38
-0:13
15K
9.32 mi11:28:221:02:356:4320:41
6:39
+0:01
20K
12.43 mi11:49:041:23:176:4220:42
6:40
+0:01
Half
13.11 mi11:53:381:27:516:424:34
6:42
+0:02
25K
15.53 mi12:10:031:44:166:4316:25
6:46
+0:04
30K
18.64 mi12:31:452:05:586:4521:42
6:59
+0:13
20M
20.00 mi12:41:302:15:436:479:45
7:10
+0:11
21M
21.00 mi12:49:062:23:196:497:36
7:36
+0:26
35K
21.75 mi12:54:202:28:336:505:14
7:00
-0:36
23M
23.00 mi13:03:252:37:386:519:05
7:15
+0:15
24M
24.00 mi13:10:402:44:536:527:15
7:15
0:00
40K
24.85 mi13:17:042:51:176:536:24
7:29
+0:14
25.2M
25.20 mi13:19:542:54:076:552:50
8:13
+0:44
Finish
26.22 mi13:27:303:01:436:567:36
7:27
-0:46

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

6:38 /mi

Average Pace

6:56 /mi

Slowest Pace

8:13 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

1:23:00

46% of race

Time at Steady Pace

57:57

32% of race

Time at Slower Pace

40:46

22% of race

Average Pace: 6:56 /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 mi10:47:0321:166:5121:16
6:51
#5121
10K
6.21 mi11:07:4141:546:4520:38
6:38
#4419
15K
9.32 mi11:28:221:02:356:4320:41
6:39
#4163
20K
12.43 mi11:49:041:23:176:4220:42
6:40
#3890
Half
13.11 mi11:53:381:27:516:424:34
6:42
#3906
25K
15.53 mi12:10:031:44:166:4316:25
6:46
#3882
30K
18.64 mi12:31:452:05:586:4521:42
6:59
#3930
20M
20.00 mi12:41:302:15:436:479:45
7:10
#4023
21M
21.00 mi12:49:062:23:196:497:36
7:36
#4096
35K
21.75 mi12:54:202:28:336:505:14
7:00
#4152
23M
23.00 mi13:03:252:37:386:519:05
7:15
#4214
24M
24.00 mi13:10:402:44:536:527:15
7:15
#4339
40K
24.85 mi13:17:042:51:176:536:24
7:29
#4429
25.2M
25.20 mi13:19:542:54:076:552:50
8:13
#4463
Finish
26.22 mi13:27:303:01:436:567:36
7:27
#4559
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF45-49Seg. OverallSeg. FemalesSeg. F45-49
5K3.11 mi3.11 mi51213663663765(Top 14%)214(Top 2%)214(Top 12%)
10K6.21 mi3.10 mi4419+702276+90276+903835(Top 14%)215(Top 2%)215(Top 12%)
15K9.32 mi3.11 mi4163+256251+25251+253765(Top 14%)214(Top 2%)214(Top 12%)
20K12.43 mi3.11 mi3890+273222+29222+293302(Top 12%)167(Top 1%)167(Top 9%)
Half13.11 mi0.68 mi3906-16223-1223-14382(Top 16%)291(Top 3%)291(Top 16%)
25K15.53 mi2.42 mi3882+24220+3220+33924(Top 15%)235(Top 2%)235(Top 13%)
30K18.64 mi3.11 mi3930-48224-4224-44262(Top 16%)290(Top 3%)290(Top 16%)
20M20.00 mi1.36 mi4023-93238-14238-145007(Top 19%)453(Top 4%)453(Top 25%)
21M21.00 mi1.00 mi4096-73251-13251-135113(Top 19%)549(Top 5%)549(Top 30%)
35K21.75 mi0.75 mi4152-56262-11262-115344(Top 20%)570(Top 5%)570(Top 31%)
23M23.00 mi1.25 mi4214-62267-5267-55088(Top 19%)549(Top 5%)549(Top 30%)
24M24.00 mi1.00 mi4339-125280-13280-136052(Top 23%)900(Top 8%)900(Top 50%)
40K24.85 mi0.85 mi4429-90294-14294-146644(Top 25%)1210(Top 11%)1210(Top 67%)
25.2M25.20 mi0.35 mi4463-34303-9303-97803(Top 29%)1715(Top 15%)1715(Top 94%)
Finish26.22 mi1.02 mi4559-96323-20323-208247(Top 31%)1922(Top 17%)1922(Top 106%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 14%
×21story building
+97ft-345ft

Overall

3765

Females

214

F45-49

214

5K→10K

3.1 - 6.2 mi

Top 14%
×5story building
+79ft-138ft

Overall

3835

Females

215

F45-49

215

10K→15K

6.2 - 9.3 mi

Top 14%
×3story building
+67ft-78ft

Overall

3765

Females

214

F45-49

214

15K→20K

9.3 - 12.4 mi

Top 12%
×5story building
+106ft-86ft

Overall

3302

Females

167

F45-49

167

20K→Half

12.4 - 13.1 mi

Top 16%
×2story building
+19ft-37ft

Overall

4382

Females

291

F45-49

291

Half→25K

13.1 - 15.5 mi

Top 15%
×4story building
+66ft-88ft

Overall

3924

Females

235

F45-49

235

25K→30K

15.5 - 18.6 mi

Top 16%
×9story building
+181ft-148ft

Overall

4262

Females

290

F45-49

290

30K→20M

18.6 - 20.0 mi

Top 19%
×5story building
+64ft-50ft

Overall

5007

Females

453

F45-49

453

20M→21M

20.0 - 21.0 mi

Top 19%
×8story building
+106ft-24ft

Overall

5113

Females

549

F45-49

549

21M→35K

21.0 - 21.8 mi

Top 20%
×7story building
+17ft-86ft

Overall

5344

Females

570

F45-49

570

35K→23M

21.8 - 23.0 mi

Top 19%
×5story building
+23ft-63ft

Overall

5088

Females

549

F45-49

549

23M→24M

23.0 - 24.0 mi

Top 23%
×6story building
+12ft-82ft

Overall

6052

Females

900

F45-49

900

24M→40K

24.0 - 24.9 mi

Top 25%
×1story
+6ft-20ft

Overall

6644

Females

1210

F45-49

1210

40K→25.2M

24.9 - 25.2 mi

Top 29%
×1story
+13ft-16ft

Overall

7803

Females

1715

F45-49

1715

25.2M→Finish

25.2 - 26.2 mi

Top 31%
×2story building
+22ft-21ft

Overall

8247

Females

1922

F45-49

1922

Passing Analysis

Category:
Athletes Passed
1734
Passed By
1172
Net Change
+562
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#5121
5K → 10K72624+702#5121#4419
10K → 15K29741+256#4419#4163
15K → 20K28714+273#4163#3890
20K → Half1329-16#3890#3906
Half → 25K9268+24#3906#3882
25K → 30K91139-48#3882#3930
30K → 20M35128-93#3930#4023
20M → 21M51124-73#4023#4096
21M → 35K1975-56#4096#4152
35K → 23M45107-62#4152#4214
23M → 24M24149-125#4214#4339
24M → 40K19109-90#4339#4429
40K → 25.2M1246-34#4429#4463
25.2M → Finish23119-96#4463#4559
TOTALS17341172+562
📊

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