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BOSTON MARATHON 2023

Lauren Coulter

Bib: 27377•F

NY

0:00
0:00
/ mi
Masters
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Overall
#0 / 26622
Gender (Female)
#0 / 11423
Masters (Masters Women)
#0 / 6539
Division (F40-44)
#0 / 1878
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
9:12/mi
28:34
↑ 97↓ 3451.5%
10K· 6.21 mi
9:06/mi
56:49
↑ 79↓ 1380.4%
15K· 9.32 mi
9:13/mi
1:25:28
↑ 67↓ 78
20K· 12.43 mi
9:12/mi
1:54:03
↑ 106↓ 860.1%
Half· 13.11 mi
9:08/mi
2:00:17
↑ 19↓ 370.5%
25K· 15.53 mi
9:11/mi
2:22:34
↑ 66↓ 880.2%
30K· 18.64 mi
9:18/mi
2:51:29
↑ 181↓ 1480.2%
20M
9:15/mi
3:04:03
↑ 64↓ 500.2%
21M
9:53/mi
3:13:56
↑ 106↓ 241.6%
35K· 21.75 mi
9:00/mi
3:20:40
↑ 17↓ 861.7%
23M
9:15/mi
3:32:15
↑ 23↓ 630.6%
24M
9:04/mi
3:41:19
↓ 821.3%
40K· 24.85 mi
9:07/mi
3:49:07
↓ 200.3%
25.2M
9:20/mi
3:52:20
↑ 13↓ 160.2%
Finish· 26.22 mi
8:15/mi
4:00:44
↑ 22↓ 21

The Course

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Half Splits

1st Half· via Half⚖️ Balanced
Distance13.11 mi
Time2:00:17
Pace9:11 /mi
2nd Half⚖️ Balanced
Distance13.11 mi
Time2:00:27
Pace9:11 /mi
📊Even Split: Consistent pacing between halves

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:50:3428:349:1228:34
9:12
-
10K
6.21 mi12:18:4956:499:0928:15
9:06
-0:06
15K
9.32 mi12:47:281:25:289:1028:39
9:13
+0:07
20K
12.43 mi13:16:031:54:039:1128:35
9:12
-0:01
Half
13.11 mi13:22:172:00:179:116:14
9:08
-0:04
25K
15.53 mi13:44:342:22:349:1122:17
9:11
+0:03
30K
18.64 mi14:13:292:51:299:1228:55
9:18
+0:07
20M
20.00 mi14:26:033:04:039:1212:34
9:15
-0:03
21M
21.00 mi14:35:563:13:569:149:53
9:53
+0:38
35K
21.75 mi14:42:403:20:409:146:44
9:00
-0:53
23M
23.00 mi14:54:153:32:159:1411:35
9:15
+0:15
24M
24.00 mi15:03:193:41:199:139:04
9:04
-0:11
40K
24.85 mi15:11:073:49:079:137:48
9:07
+0:03
25.2M
25.20 mi15:14:203:52:209:133:13
9:20
+0:13
Finish
26.22 mi15:22:444:00:449:118:24
8:15
-1:05

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

8:15 /mi

Average Pace

9:11 /mi

Slowest Pace

9:53 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

24:12

10% of race

Time at Steady Pace

3:26:39

86% of race

Time at Slower Pace

9:53

4% of race

Average Pace: 9:11 /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 mi11:50:3428:349:1228:34
9:12
#21198
10K
6.21 mi12:18:4956:499:0928:15
9:06
#21224
15K
9.32 mi12:47:281:25:289:1028:39
9:13
#21263
20K
12.43 mi13:16:031:54:039:1128:35
9:12
#21102
Half
13.11 mi13:22:172:00:179:116:14
9:08
#21098
25K
15.53 mi13:44:342:22:349:1122:17
9:11
#20857
30K
18.64 mi14:13:292:51:299:1228:55
9:18
#20452
20M
20.00 mi14:26:033:04:039:1212:34
9:15
#20259
21M
21.00 mi14:35:563:13:569:149:53
9:53
#20099
35K
21.75 mi14:42:403:20:409:146:44
9:00
#20011
23M
23.00 mi14:54:153:32:159:1411:35
9:15
#19847
24M
24.00 mi15:03:193:41:199:139:04
9:04
#19752
40K
24.85 mi15:11:073:49:079:137:48
9:07
#19651
25.2M
25.20 mi15:14:203:52:209:133:13
9:20
#19583
Finish
26.22 mi15:22:444:00:449:118:24
8:15
#19431
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF40-44Seg. OverallSeg. FemalesSeg. F40-44
5K3.11 mi3.11 mi211988473847321380(Top 80%)8437(Top 74%)8437(Top 449%)
10K6.21 mi3.10 mi21224-268431+428431+4221239(Top 80%)8409(Top 74%)8409(Top 448%)
15K9.32 mi3.11 mi21263-398419+128419+1221380(Top 80%)8437(Top 74%)8437(Top 449%)
20K12.43 mi3.11 mi21102+1618329+908329+9020582(Top 77%)7997(Top 70%)7997(Top 426%)
Half13.11 mi0.68 mi21098+48324+58324+520960(Top 79%)8216(Top 72%)8216(Top 437%)
25K15.53 mi2.42 mi20857+2418182+1428182+14219808(Top 74%)7587(Top 66%)7587(Top 404%)
30K18.64 mi3.11 mi20452+4057982+2007982+20018673(Top 70%)7019(Top 61%)7019(Top 374%)
20M20.00 mi1.36 mi20259+1937891+917891+9117815(Top 67%)6649(Top 58%)6649(Top 354%)
21M21.00 mi1.00 mi20099+1607807+847807+8417616(Top 66%)6539(Top 57%)6539(Top 348%)
35K21.75 mi0.75 mi20011+887759+487759+4817946(Top 67%)6814(Top 60%)6814(Top 363%)
23M23.00 mi1.25 mi19847+1647674+857674+8517326(Top 65%)6469(Top 57%)6469(Top 344%)
24M24.00 mi1.00 mi19752+957625+497625+4917559(Top 66%)6660(Top 58%)6660(Top 355%)
40K24.85 mi0.85 mi19651+1017576+497576+4916773(Top 63%)6285(Top 55%)6285(Top 335%)
25.2M25.20 mi0.35 mi19583+687542+347542+3414449(Top 54%)5019(Top 44%)5019(Top 267%)
Finish26.22 mi1.02 mi19431+1527460+827460+8213781(Top 52%)4640(Top 41%)4640(Top 247%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 80%
×21story building
+97ft-345ft

Overall

21380

Females

8437

F40-44

8437

5K→10K

3.1 - 6.2 mi

Top 80%
×5story building
+79ft-138ft

Overall

21239

Females

8409

F40-44

8409

10K→15K

6.2 - 9.3 mi

Top 80%
×3story building
+67ft-78ft

Overall

21380

Females

8437

F40-44

8437

15K→20K

9.3 - 12.4 mi

Top 77%
×5story building
+106ft-86ft

Overall

20582

Females

7997

F40-44

7997

20K→Half

12.4 - 13.1 mi

Top 79%
×2story building
+19ft-37ft

Overall

20960

Females

8216

F40-44

8216

Half→25K

13.1 - 15.5 mi

Top 74%
×4story building
+66ft-88ft

Overall

19808

Females

7587

F40-44

7587

25K→30K

15.5 - 18.6 mi

Top 70%
×9story building
+181ft-148ft

Overall

18673

Females

7019

F40-44

7019

30K→20M

18.6 - 20.0 mi

Top 67%
×5story building
+64ft-50ft

Overall

17815

Females

6649

F40-44

6649

20M→21M

20.0 - 21.0 mi

Top 66%
×8story building
+106ft-24ft

Overall

17616

Females

6539

F40-44

6539

21M→35K

21.0 - 21.8 mi

Top 67%
×7story building
+17ft-86ft

Overall

17946

Females

6814

F40-44

6814

35K→23M

21.8 - 23.0 mi

Top 65%
×5story building
+23ft-63ft

Overall

17326

Females

6469

F40-44

6469

23M→24M

23.0 - 24.0 mi

Top 66%
×6story building
+12ft-82ft

Overall

17559

Females

6660

F40-44

6660

24M→40K

24.0 - 24.9 mi

Top 63%
×1story
+6ft-20ft

Overall

16773

Females

6285

F40-44

6285

40K→25.2M

24.9 - 25.2 mi

Top 54%
×1story
+13ft-16ft

Overall

14449

Females

5019

F40-44

5019

25.2M→Finish

25.2 - 26.2 mi

Top 52%
×2story building
+22ft-21ft

Overall

13781

Females

4640

F40-44

4640

Passing Analysis

Category:
Athletes Passed
2418
Passed By
651
Net Change
+1767
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#21198
5K → 10K257283-26#21198#21224
10K → 15K144183-39#21224#21263
15K → 20K23069+161#21263#21102
20K → Half3531+4#21102#21098
Half → 25K25514+241#21098#20857
25K → 30K4138+405#20857#20452
30K → 20M20411+193#20452#20259
20M → 21M1688+160#20259#20099
21M → 35K968+88#20099#20011
35K → 23M1739+164#20011#19847
23M → 24M10712+95#19847#19752
24M → 40K1098+101#19752#19651
40K → 25.2M713+68#19651#19583
25.2M → Finish1564+152#19583#19431
TOTALS2418651+1767
📊

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