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BOSTON MARATHON 2023

Lauren Collins

Bib: 20561•F

CA

0:00
0:00
/ mi
Masters
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Overall
#0 / 26622
Gender (Female)
#0 / 11423
Masters (Masters Women)
#0 / 6539
Top 43%
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
8:13/mi
25:33
↑ 97↓ 3451.5%
10K· 6.21 mi
8:12/mi
51:03
↑ 79↓ 1380.4%
15K· 9.32 mi
8:33/mi
1:17:36
↑ 67↓ 78
20K· 12.43 mi
8:23/mi
1:43:40
↑ 106↓ 860.1%
Half· 13.11 mi
8:26/mi
1:49:25
↑ 19↓ 370.5%
25K· 15.53 mi
8:32/mi
2:10:06
↑ 66↓ 880.2%
30K· 18.64 mi
8:54/mi
2:37:46
↑ 181↓ 1480.2%
20M
9:07/mi
2:50:10
↑ 64↓ 500.2%
21M
9:50/mi
3:00:00
↑ 106↓ 241.6%
35K· 21.75 mi
9:05/mi
3:06:48
↑ 17↓ 861.7%
23M
9:22/mi
3:18:32
↑ 23↓ 630.6%
24M
9:22/mi
3:27:54
↓ 821.3%
40K· 24.85 mi
9:26/mi
3:35:58
↓ 200.3%
25.2M
9:52/mi
3:39:22
↑ 13↓ 160.2%
Finish· 26.22 mi
8:30/mi
3:48:02
↑ 22↓ 21

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:49:25
Pace8:21 /mi
2nd Half
Distance13.11 mi
Time1:58:37
Pace9:03 /mi
📊Positive Split: 8.4% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:17:4625:338:1325:33
8:13
-
10K
6.21 mi11:43:1651:038:1325:30
8:12
-0:01
15K
9.32 mi12:09:491:17:368:2026:33
8:33
+0:21
20K
12.43 mi12:35:531:43:408:2126:04
8:23
-0:10
Half
13.11 mi12:41:381:49:258:215:45
8:26
+0:03
25K
15.53 mi13:02:192:10:068:2320:41
8:32
+0:06
30K
18.64 mi13:29:592:37:468:2827:40
8:54
+0:22
20M
20.00 mi13:42:232:50:108:3012:24
9:07
+0:13
21M
21.00 mi13:52:133:00:008:349:50
9:50
+0:43
35K
21.75 mi13:59:013:06:488:356:48
9:05
-0:45
23M
23.00 mi14:10:453:18:328:3811:44
9:22
+0:17
24M
24.00 mi14:20:073:27:548:409:22
9:22
0:00
40K
24.85 mi14:28:113:35:588:418:04
9:26
+0:04
25.2M
25.20 mi14:31:353:39:228:423:24
9:52
+0:26
Finish
26.22 mi14:40:153:48:028:428:40
8:30
-1:22

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

8:12 /mi

Average Pace

8:42 /mi

Slowest Pace

9:52 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

2:18:46

61% of race

Time at Steady Pace

46:52

21% of race

Time at Slower Pace

42:24

19% of race

Average Pace: 8:42 /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 mi11:17:4625:338:1325:33
8:13
#15629
10K
6.21 mi11:43:1651:038:1325:30
8:12
#15935
15K
9.32 mi12:09:491:17:368:2026:33
8:33
#16704
20K
12.43 mi12:35:531:43:408:2126:04
8:23
#16574
Half
13.11 mi12:41:381:49:258:215:45
8:26
#16616
25K
15.53 mi13:02:192:10:068:2320:41
8:32
#16579
30K
18.64 mi13:29:592:37:468:2827:40
8:54
#16553
20M
20.00 mi13:42:232:50:108:3012:24
9:07
#16587
21M
21.00 mi13:52:133:00:008:349:50
9:50
#16630
35K
21.75 mi13:59:013:06:488:356:48
9:05
#16704
23M
23.00 mi14:10:453:18:328:3811:44
9:22
#16785
24M
24.00 mi14:20:073:27:548:409:22
9:22
#16890
40K
24.85 mi14:28:113:35:588:418:04
9:26
#16934
25.2M
25.20 mi14:31:353:39:228:423:24
9:52
#16937
Finish
26.22 mi14:40:153:48:028:428:40
8:30
#16861
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF45-49Seg. OverallSeg. FemalesSeg. F45-49
5K3.11 mi3.11 mi156295058505818121(Top 68%)6569(Top 58%)6569(Top 362%)
10K6.21 mi3.10 mi15935-3065248-1905248-19016323(Top 61%)5469(Top 48%)5469(Top 301%)
15K9.32 mi3.11 mi16704-7695734-4865734-48618121(Top 68%)6569(Top 58%)6569(Top 362%)
20K12.43 mi3.11 mi16574+1305664+705664+7016200(Top 61%)5469(Top 48%)5469(Top 301%)
Half13.11 mi0.68 mi16616-425695-315695-3117345(Top 65%)6091(Top 53%)6091(Top 335%)
25K15.53 mi2.42 mi16579+375683+125683+1216402(Top 62%)5670(Top 50%)5670(Top 312%)
30K18.64 mi3.11 mi16553+265715-325715-3216685(Top 63%)5881(Top 51%)5881(Top 324%)
20M20.00 mi1.36 mi16587-345750-355750-3517199(Top 65%)6280(Top 55%)6280(Top 346%)
21M21.00 mi1.00 mi16630-435781-315781-3117386(Top 65%)6419(Top 56%)6419(Top 353%)
35K21.75 mi0.75 mi16704-745823-425823-4218283(Top 69%)6984(Top 61%)6984(Top 384%)
23M23.00 mi1.25 mi16785-815893-705893-7017823(Top 67%)6762(Top 59%)6762(Top 372%)
24M24.00 mi1.00 mi16890-1055974-815974-8118722(Top 70%)7285(Top 64%)7285(Top 401%)
40K24.85 mi0.85 mi16934-446024-506024-5018104(Top 68%)6990(Top 61%)6990(Top 385%)
25.2M25.20 mi0.35 mi16937-36036-126036-1216847(Top 63%)6338(Top 55%)6338(Top 349%)
Finish26.22 mi1.02 mi16861+765994+425994+4215482(Top 58%)5529(Top 48%)5529(Top 304%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 68%
×21story building
+97ft-345ft

Overall

18121

Females

6569

F45-49

6569

5K→10K

3.1 - 6.2 mi

Top 61%
×5story building
+79ft-138ft

Overall

16323

Females

5469

F45-49

5469

10K→15K

6.2 - 9.3 mi

Top 68%
×3story building
+67ft-78ft

Overall

18121

Females

6569

F45-49

6569

15K→20K

9.3 - 12.4 mi

Top 61%
×5story building
+106ft-86ft

Overall

16200

Females

5469

F45-49

5469

20K→Half

12.4 - 13.1 mi

Top 65%
×2story building
+19ft-37ft

Overall

17345

Females

6091

F45-49

6091

Half→25K

13.1 - 15.5 mi

Top 62%
×4story building
+66ft-88ft

Overall

16402

Females

5670

F45-49

5670

25K→30K

15.5 - 18.6 mi

Top 63%
×9story building
+181ft-148ft

Overall

16685

Females

5881

F45-49

5881

30K→20M

18.6 - 20.0 mi

Top 65%
×5story building
+64ft-50ft

Overall

17199

Females

6280

F45-49

6280

20M→21M

20.0 - 21.0 mi

Top 65%
×8story building
+106ft-24ft

Overall

17386

Females

6419

F45-49

6419

21M→35K

21.0 - 21.8 mi

Top 69%
×7story building
+17ft-86ft

Overall

18283

Females

6984

F45-49

6984

35K→23M

21.8 - 23.0 mi

Top 67%
×5story building
+23ft-63ft

Overall

17823

Females

6762

F45-49

6762

23M→24M

23.0 - 24.0 mi

Top 70%
×6story building
+12ft-82ft

Overall

18722

Females

7285

F45-49

7285

24M→40K

24.0 - 24.9 mi

Top 68%
×1story
+6ft-20ft

Overall

18104

Females

6990

F45-49

6990

40K→25.2M

24.9 - 25.2 mi

Top 63%
×1story
+13ft-16ft

Overall

16847

Females

6338

F45-49

6338

25.2M→Finish

25.2 - 26.2 mi

Top 58%
×2story building
+22ft-21ft

Overall

15482

Females

5529

F45-49

5529

Passing Analysis

Category:
Athletes Passed
1240
Passed By
2472
Net Change
-1232
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#15629
5K → 10K166472-306#15629#15935
10K → 15K30799-769#15935#16704
15K → 20K233103+130#16704#16574
20K → Half2062-42#16574#16616
Half → 25K153116+37#16616#16579
25K → 30K192166+26#16579#16553
30K → 20M73107-34#16553#16587
20M → 21M70113-43#16587#16630
21M → 35K26100-74#16630#16704
35K → 23M60141-81#16704#16785
23M → 24M32137-105#16785#16890
24M → 40K4589-44#16890#16934
40K → 25.2M2932-3#16934#16937
25.2M → Finish11135+76#16937#16861
TOTALS12402472-1232
📊

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