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BOSTON MARATHON 2023

Caitlin Leffel

Bib: 20203•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

Start
0:00:00
Race begins
5K· 3.11 mi
25:38
Rank: #15832
Start → 5K
25:38 | 8:15/mi
10K· 6.21 mi
51:25
Rank: #16337 (-505)
5K → 10K
25:47 | 8:18/mi
15K· 9.32 mi
1:18:10
Rank: #17117 (-780)
10K → 15K
26:45 | 8:37/mi
20K· 12.43 mi
1:46:04
Rank: #17795 (-678)
15K → 20K
27:54 | 8:59/mi
Half· 13.11 mi
1:52:07
Rank: #17918 (-123)
20K → Half
6:03 | 8:52/mi
25K· 15.53 mi
2:14:45
Rank: #18423 (-505)
Half → 25K
22:38 | 9:20/mi
30K· 18.64 mi
2:45:18
Rank: #18934 (-511)
25K → 30K
30:33 | 9:50/mi
20M
2:59:22
Rank: #19216 (-282)
30K → 20M
14:04 | 10:21/mi
21M
3:10:48
Rank: #19449 (-233)
20M → 21M
11:26 | 11:26/mi
35K· 21.75 mi
3:18:03
Rank: #19495 (-46)
21M → 35K
7:15 | 9:41/mi
23M
3:31:10
Rank: #19665 (-170)
35K → 23M
13:07 | 10:29/mi
24M
3:40:56
Rank: #19685 (-20)
23M → 24M
9:46 | 9:46/mi
40K· 24.85 mi
3:49:35
Rank: #19728 (-43)
24M → 40K
8:39 | 10:07/mi
25.2M
3:53:29
Rank: #19764 (-36)
40K → 25.2M
3:54 | 11:19/mi
Finish· 26.22 mi
4:03:48
Rank: #19877 (-113)
25.2M → Finish
10:19 | 10:07/mi

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:52:07
Pace8:33 /mi
2nd Half
Distance13.11 mi
Time2:11:41
Pace10:03 /mi
📊Positive Split: 17.5% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:18:1725:388:1525:38
8:15
-
10K
6.21 mi11:44:0451:258:1625:47
8:18
+0:03
15K
9.32 mi12:10:491:18:108:2326:45
8:37
+0:19
20K
12.43 mi12:38:431:46:048:3227:54
8:59
+0:22
Half
13.11 mi12:44:461:52:078:336:03
8:52
-0:07
25K
15.53 mi13:07:242:14:458:4022:38
9:20
+0:28
30K
18.64 mi13:37:572:45:188:5230:33
9:50
+0:30
20M
20.00 mi13:52:012:59:228:5814:04
10:21
+0:31
21M
21.00 mi14:03:273:10:489:0511:26
11:26
+1:05
35K
21.75 mi14:10:423:18:039:067:15
9:41
-1:45
23M
23.00 mi14:23:493:31:109:1113:07
10:29
+0:48
24M
24.00 mi14:33:353:40:569:129:46
9:46
-0:43
40K
24.85 mi14:42:143:49:359:148:39
10:07
+0:21
25.2M
25.20 mi14:46:083:53:299:163:54
11:19
+1:12
Finish
26.22 mi14:56:274:03:489:1810:19
10:07
-1:12

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

9:18 /mi

Slowest Pace

11:26 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

1:52:07

46% of race

Time at Steady Pace

1:29:10

37% of race

Time at Slower Pace

42:31

17% of race

Average Pace: 9:18 /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 mi11:18:1725:388:1525:38
8:15
#15832
10K
6.21 mi11:44:0451:258:1625:47
8:18
#16337
15K
9.32 mi12:10:491:18:108:2326:45
8:37
#17117
20K
12.43 mi12:38:431:46:048:3227:54
8:59
#17795
Half
13.11 mi12:44:461:52:078:336:03
8:52
#17918
25K
15.53 mi13:07:242:14:458:4022:38
9:20
#18423
30K
18.64 mi13:37:572:45:188:5230:33
9:50
#18934
20M
20.00 mi13:52:012:59:228:5814:04
10:21
#19216
21M
21.00 mi14:03:273:10:489:0511:26
11:26
#19449
35K
21.75 mi14:10:423:18:039:067:15
9:41
#19495
23M
23.00 mi14:23:493:31:109:1113:07
10:29
#19665
24M
24.00 mi14:33:353:40:569:129:46
9:46
#19685
40K
24.85 mi14:42:143:49:359:148:39
10:07
#19728
25.2M
25.20 mi14:46:083:53:299:163:54
11:19
#19764
Finish
26.22 mi14:56:274:03:489:1810:19
10:07
#19877
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF40-44Seg. OverallSeg. FemalesSeg. F40-44
5K3.11 mi3.11 mi158325176517618536(Top 70%)6829(Top 60%)6829(Top 364%)
10K6.21 mi3.10 mi16337-5055486-3105486-31016935(Top 64%)5835(Top 51%)5835(Top 311%)
15K9.32 mi3.11 mi17117-7805978-4925978-49218536(Top 70%)6829(Top 60%)6829(Top 364%)
20K12.43 mi3.11 mi17795-6786402-4246402-42419607(Top 74%)7442(Top 65%)7442(Top 396%)
Half13.11 mi0.68 mi17918-1236474-726474-7219880(Top 75%)7605(Top 67%)7605(Top 405%)
25K15.53 mi2.42 mi18423-5056781-3076781-30720308(Top 76%)7869(Top 69%)7869(Top 419%)
30K18.64 mi3.11 mi18934-5117100-3197100-31920545(Top 77%)8079(Top 71%)8079(Top 430%)
20M20.00 mi1.36 mi19216-2827278-1787278-17821403(Top 80%)8639(Top 76%)8639(Top 460%)
21M21.00 mi1.00 mi19449-2337433-1557433-15521755(Top 82%)8854(Top 78%)8854(Top 471%)
35K21.75 mi0.75 mi19495-467460-277460-2720457(Top 77%)8199(Top 72%)8199(Top 437%)
23M23.00 mi1.25 mi19665-1707563-1037563-10321262(Top 80%)8656(Top 76%)8656(Top 461%)
24M24.00 mi1.00 mi19685-207584-217584-2120120(Top 76%)8038(Top 70%)8038(Top 428%)
40K24.85 mi0.85 mi19728-437623-397623-3920290(Top 76%)8211(Top 72%)8211(Top 437%)
25.2M25.20 mi0.35 mi19764-367649-267649-2621149(Top 79%)8671(Top 76%)8671(Top 462%)
Finish26.22 mi1.02 mi19877-1137720-717720-7122097(Top 83%)9163(Top 80%)9163(Top 488%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 70%
×21stories
+97ft-345ft

Overall

18536

Females

6829

F40-44

6829

5K→10K

3.1 - 6.2 mi

Top 64%
×5stories
+79ft-138ft

Overall

16935

Females

5835

F40-44

5835

10K→15K

6.2 - 9.3 mi

Top 70%
×3stories
+67ft-78ft

Overall

18536

Females

6829

F40-44

6829

15K→20K

9.3 - 12.4 mi

Top 74%
×5stories
+106ft-86ft

Overall

19607

Females

7442

F40-44

7442

20K→Half

12.4 - 13.1 mi

Top 75%
×2stories
+19ft-37ft

Overall

19880

Females

7605

F40-44

7605

Half→25K

13.1 - 15.5 mi

Top 76%
×4stories
+66ft-88ft

Overall

20308

Females

7869

F40-44

7869

25K→30K

15.5 - 18.6 mi

Top 77%
×9stories
+181ft-148ft

Overall

20545

Females

8079

F40-44

8079

30K→20M

18.6 - 20.0 mi

Top 80%
×5stories
+64ft-50ft

Overall

21403

Females

8639

F40-44

8639

20M→21M

20.0 - 21.0 mi

Top 82%
×8stories
+106ft-24ft

Overall

21755

Females

8854

F40-44

8854

21M→35K

21.0 - 21.8 mi

Top 77%
×7stories
+17ft-86ft

Overall

20457

Females

8199

F40-44

8199

35K→23M

21.8 - 23.0 mi

Top 80%
×5stories
+23ft-63ft

Overall

21262

Females

8656

F40-44

8656

23M→24M

23.0 - 24.0 mi

Top 76%
×6stories
+12ft-82ft

Overall

20120

Females

8038

F40-44

8038

24M→40K

24.0 - 24.9 mi

Top 76%
×1story
+6ft-20ft

Overall

20290

Females

8211

F40-44

8211

40K→25.2M

24.9 - 25.2 mi

Top 79%
×1story
+13ft-16ft

Overall

21149

Females

8671

F40-44

8671

25.2M→Finish

25.2 - 26.2 mi

Top 83%
×2stories
+22ft-21ft

Overall

22097

Females

9163

F40-44

9163

Passing Analysis

Category:
Athletes Passed
548
Passed By
4593
Net Change
-4045
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#15832
5K → 10K127632-505#15832#16337
10K → 15K32812-780#16337#17117
15K → 20K50728-678#17117#17795
20K → Half7130-123#17795#17918
Half → 25K35540-505#17918#18423
25K → 30K66577-511#18423#18934
30K → 20M25307-282#18934#19216
20M → 21M31264-233#19216#19449
21M → 35K3076-46#19449#19495
35K → 23M35205-170#19495#19665
23M → 24M4464-20#19665#19685
24M → 40K3982-43#19685#19728
40K → 25.2M945-36#19728#19764
25.2M → Finish18131-113#19764#19877
TOTALS5484593-4045
📊

Passing Visuals

Category:
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🔥Passing Intensity

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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