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BOSTON MARATHON 2023

Jennifer Thomas

Bib: 22179•F

TX

0:00
0:00
/ mi
Masters
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Overall
#0 / 26622
Gender (Female)
#0 / 11423
Masters (Masters Women)
#0 / 6539
Top 45%
Division (F45-49)
#0 / 1817
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
8:43/mi
27:06
↑ 97↓ 3451.5%
10K· 6.21 mi
8:59/mi
55:01
↑ 79↓ 1380.4%
15K· 9.32 mi
8:40/mi
1:21:56
↑ 67↓ 78
20K· 12.43 mi
8:46/mi
1:49:10
↑ 106↓ 860.1%
Half· 13.11 mi
8:33/mi
1:55:00
↑ 19↓ 370.5%
25K· 15.53 mi
8:39/mi
2:15:58
↑ 66↓ 880.2%
30K· 18.64 mi
8:52/mi
2:43:31
↑ 181↓ 1480.2%
20M
8:39/mi
2:55:16
↑ 64↓ 500.2%
21M
9:12/mi
3:04:28
↑ 106↓ 241.6%
35K· 21.75 mi
8:45/mi
3:11:01
↑ 17↓ 861.7%
23M
8:38/mi
3:21:49
↑ 23↓ 630.6%
24M
8:39/mi
3:30:28
↓ 821.3%
40K· 24.85 mi
8:37/mi
3:37:50
↓ 200.3%
25.2M
8:56/mi
3:40:55
↑ 13↓ 160.2%
Finish· 26.22 mi
8:17/mi
3:49:21
↑ 22↓ 21

The Course

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Half Splits

1st Half· via Half⚖️ Balanced
Distance13.11 mi
Time1:55:00
Pace8:46 /mi
2nd Half⚖️ Balanced
Distance13.11 mi
Time1:54:21
Pace8:43 /mi
📊Even Split: Consistent pacing between halves

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:21:1427:068:4327:06
8:43
-
10K
6.21 mi11:49:0955:018:5127:55
8:59
+0:16
15K
9.32 mi12:16:041:21:568:4726:55
8:40
-0:19
20K
12.43 mi12:43:181:49:108:4727:14
8:46
+0:06
Half
13.11 mi12:49:081:55:008:465:50
8:33
-0:13
25K
15.53 mi13:10:062:15:588:4520:58
8:39
+0:06
30K
18.64 mi13:37:392:43:318:4627:33
8:52
+0:13
20M
20.00 mi13:49:242:55:168:4611:45
8:39
-0:13
21M
21.00 mi13:58:363:04:288:479:12
9:12
+0:33
35K
21.75 mi14:05:093:11:018:476:33
8:45
-0:27
23M
23.00 mi14:15:573:21:498:4610:48
8:38
-0:07
24M
24.00 mi14:24:363:30:288:468:39
8:39
+0:01
40K
24.85 mi14:31:583:37:508:467:22
8:37
-0:02
25.2M
25.20 mi14:35:033:40:558:463:05
8:56
+0:19
Finish
26.22 mi14:43:293:49:218:458:26
8:17
-0:39

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

8:17 /mi

Average Pace

8:45 /mi

Slowest Pace

9:12 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

3:40:09

96% of race

Time at Steady Pace

9:12

4% of race

Time at Slower Pace

0:00

0% of race

Average Pace: 8:45 /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 mi11:21:1427:068:4327:06
8:43
#19034
10K
6.21 mi11:49:0955:018:5127:55
8:59
#19952
15K
9.32 mi12:16:041:21:568:4726:55
8:40
#19553
20K
12.43 mi12:43:181:49:108:4727:14
8:46
#19248
Half
13.11 mi12:49:081:55:008:465:50
8:33
#19189
25K
15.53 mi13:10:062:15:588:4520:58
8:39
#18859
30K
18.64 mi13:37:392:43:318:4627:33
8:52
#18412
20M
20.00 mi13:49:242:55:168:4611:45
8:39
#18119
21M
21.00 mi13:58:363:04:288:479:12
9:12
#17895
35K
21.75 mi14:05:093:11:018:476:33
8:45
#17849
23M
23.00 mi14:15:573:21:498:4610:48
8:38
#17613
24M
24.00 mi14:24:363:30:288:468:39
8:39
#17521
40K
24.85 mi14:31:583:37:508:467:22
8:37
#17384
25.2M
25.20 mi14:35:033:40:558:463:05
8:56
#17298
Finish
26.22 mi14:43:293:49:218:458:26
8:17
#17199
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF45-49Seg. OverallSeg. FemalesSeg. F45-49
5K3.11 mi3.11 mi190347220722018794(Top 71%)6972(Top 61%)6972(Top 384%)
10K6.21 mi3.10 mi19952-9187737-5177737-51720817(Top 78%)8161(Top 71%)8161(Top 449%)
15K9.32 mi3.11 mi19553+3997478+2597478+25918794(Top 71%)6972(Top 61%)6972(Top 384%)
20K12.43 mi3.11 mi19248+3057268+2107268+21018495(Top 69%)6787(Top 59%)6787(Top 374%)
Half13.11 mi0.68 mi19189+597226+427226+4218025(Top 68%)6489(Top 57%)6489(Top 357%)
25K15.53 mi2.42 mi18859+3307043+1837043+18317099(Top 64%)6060(Top 53%)6060(Top 334%)
30K18.64 mi3.11 mi18412+4476813+2306813+23016480(Top 62%)5778(Top 51%)5778(Top 318%)
20M20.00 mi1.36 mi18119+2936653+1606653+16014590(Top 55%)4768(Top 42%)4768(Top 262%)
21M21.00 mi1.00 mi17895+2246526+1276526+12714515(Top 55%)4778(Top 42%)4778(Top 263%)
35K21.75 mi0.75 mi17849+466512+146512+1416748(Top 63%)6136(Top 54%)6136(Top 338%)
23M23.00 mi1.25 mi17613+2366386+1266386+12613980(Top 53%)4613(Top 40%)4613(Top 254%)
24M24.00 mi1.00 mi17521+926342+446342+4415403(Top 58%)5484(Top 48%)5484(Top 302%)
40K24.85 mi0.85 mi17384+1376272+706272+7014101(Top 53%)4812(Top 42%)4812(Top 265%)
25.2M25.20 mi0.35 mi17298+866234+386234+3812300(Top 46%)3913(Top 34%)3913(Top 215%)
Finish26.22 mi1.02 mi17199+996184+506184+5013996(Top 53%)4747(Top 42%)4747(Top 261%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 71%
×21story building
+97ft-345ft

Overall

18794

Females

6972

F45-49

6972

5K→10K

3.1 - 6.2 mi

Top 78%
×5story building
+79ft-138ft

Overall

20817

Females

8161

F45-49

8161

10K→15K

6.2 - 9.3 mi

Top 71%
×3story building
+67ft-78ft

Overall

18794

Females

6972

F45-49

6972

15K→20K

9.3 - 12.4 mi

Top 69%
×5story building
+106ft-86ft

Overall

18495

Females

6787

F45-49

6787

20K→Half

12.4 - 13.1 mi

Top 68%
×2story building
+19ft-37ft

Overall

18025

Females

6489

F45-49

6489

Half→25K

13.1 - 15.5 mi

Top 64%
×4story building
+66ft-88ft

Overall

17099

Females

6060

F45-49

6060

25K→30K

15.5 - 18.6 mi

Top 62%
×9story building
+181ft-148ft

Overall

16480

Females

5778

F45-49

5778

30K→20M

18.6 - 20.0 mi

Top 55%
×5story building
+64ft-50ft

Overall

14590

Females

4768

F45-49

4768

20M→21M

20.0 - 21.0 mi

Top 55%
×8story building
+106ft-24ft

Overall

14515

Females

4778

F45-49

4778

21M→35K

21.0 - 21.8 mi

Top 63%
×7story building
+17ft-86ft

Overall

16748

Females

6136

F45-49

6136

35K→23M

21.8 - 23.0 mi

Top 53%
×5story building
+23ft-63ft

Overall

13980

Females

4613

F45-49

4613

23M→24M

23.0 - 24.0 mi

Top 58%
×6story building
+12ft-82ft

Overall

15403

Females

5484

F45-49

5484

24M→40K

24.0 - 24.9 mi

Top 53%
×1story
+6ft-20ft

Overall

14101

Females

4812

F45-49

4812

40K→25.2M

24.9 - 25.2 mi

Top 46%
×1story
+13ft-16ft

Overall

12300

Females

3913

F45-49

3913

25.2M→Finish

25.2 - 26.2 mi

Top 53%
×2story building
+22ft-21ft

Overall

13996

Females

4747

F45-49

4747

Passing Analysis

Category:
Athletes Passed
3047
Passed By
1212
Net Change
+1835
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#19034
5K → 10K81999-918#19034#19952
10K → 15K45354+399#19952#19553
15K → 20K34035+305#19553#19248
20K → Half656+59#19248#19189
Half → 25K3333+330#19189#18859
25K → 30K46518+447#18859#18412
30K → 20M2963+293#18412#18119
20M → 21M2306+224#18119#17895
21M → 35K7428+46#17895#17849
35K → 23M24610+236#17849#17613
23M → 24M11422+92#17613#17521
24M → 40K1425+137#17521#17384
40K → 25.2M904+86#17384#17298
25.2M → Finish11819+99#17298#17199
TOTALS30471212+1835
📊

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