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BOSTON MARATHON 2023

Caroline Slyer

Bib: 32079•F

MA

0:00
0:00
/ mi
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Overall
#0 / 26622
Gender (Female)
#0 / 11423
Division (F18-39)
#0 / 4884
Race Day Weather
49°/39°F
light intensity drizzle

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
30:08
Rank: #22663
Start → 5K
30:08 | 9:42/mi
10K· 6.21 mi
1:00:53
Rank: #23162 (-499)
5K → 10K
30:45 | 9:54/mi
15K· 9.32 mi
1:31:19
Rank: #23147 (+15)
10K → 15K
30:26 | 9:48/mi
20K· 12.43 mi
2:02:20
Rank: #23052 (+95)
15K → 20K
31:01 | 9:59/mi
Half· 13.11 mi
2:09:07
Rank: #23052
20K → Half
6:47 | 9:57/mi
25K· 15.53 mi
2:35:14
Rank: #23191 (-139)
Half → 25K
26:07 | 10:46/mi
30K· 18.64 mi
3:10:57
Rank: #23329 (-138)
25K → 30K
35:43 | 11:30/mi
20M
3:28:50
Rank: #23548 (-219)
30K → 20M
17:53 | 13:10/mi
21M
3:41:24
Rank: #23570 (-22)
20M → 21M
12:34 | 12:34/mi
35K· 21.75 mi
3:50:42
Rank: #23646 (-76)
21M → 35K
9:18 | 12:26/mi
23M
4:07:43
Rank: #23851 (-205)
35K → 23M
17:01 | 13:35/mi
24M
4:20:05
Rank: #23938 (-87)
23M → 24M
12:22 | 12:22/mi
40K· 24.85 mi
4:31:06
Rank: #23979 (-41)
24M → 40K
11:01 | 12:53/mi
25.2M
4:36:02
Rank: #24014 (-35)
40K → 25.2M
4:56 | 14:18/mi
Finish· 26.22 mi
4:47:18
Rank: #24011 (+3)
25.2M → Finish
11:16 | 11:03/mi

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time2:09:07
Pace9:51 /mi
2nd Half
Distance13.11 mi
Time2:38:11
Pace12:04 /mi
📊Positive Split: 22.5% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:49:2630:089:4230:08
9:42
-
10K
6.21 mi12:20:111:00:539:4830:45
9:54
+0:12
15K
9.32 mi12:50:371:31:199:4830:26
9:48
-0:06
20K
12.43 mi13:21:382:02:209:5131:01
9:59
+0:11
Half
13.11 mi13:28:252:09:079:516:47
9:57
-0:02
25K
15.53 mi13:54:322:35:1410:0026:07
10:46
+0:49
30K
18.64 mi14:30:153:10:5710:1535:43
11:30
+0:44
20M
20.00 mi14:48:083:28:5010:2617:53
13:10
+1:40
21M
21.00 mi15:00:423:41:2410:3312:34
12:34
-0:36
35K
21.75 mi15:10:003:50:4210:369:18
12:26
-0:08
23M
23.00 mi15:27:014:07:4310:4617:01
13:35
+1:09
24M
24.00 mi15:39:234:20:0510:5012:22
12:22
-1:13
40K
24.85 mi15:50:244:31:0610:5411:01
12:53
+0:31
25.2M
25.20 mi15:55:204:36:0210:574:56
14:18
+1:25
Finish
26.22 mi16:06:364:47:1810:5811:16
11:03
-3:15

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

9:42 /mi

Average Pace

10:58 /mi

Slowest Pace

14:18 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

2:09:07

45% of race

Time at Steady Pace

1:13:06

25% of race

Time at Slower Pace

1:25:05

30% of race

Average Pace: 10:57 /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 mi11:49:2630:089:4230:08
9:42
#22663
10K
6.21 mi12:20:111:00:539:4830:45
9:54
#23162
15K
9.32 mi12:50:371:31:199:4830:26
9:48
#23147
20K
12.43 mi13:21:382:02:209:5131:01
9:59
#23052
Half
13.11 mi13:28:252:09:079:516:47
9:57
#23052
25K
15.53 mi13:54:322:35:1410:0026:07
10:46
#23191
30K
18.64 mi14:30:153:10:5710:1535:43
11:30
#23329
20M
20.00 mi14:48:083:28:5010:2617:53
13:10
#23548
21M
21.00 mi15:00:423:41:2410:3312:34
12:34
#23570
35K
21.75 mi15:10:003:50:4210:369:18
12:26
#23646
23M
23.00 mi15:27:014:07:4310:4617:01
13:35
#23851
24M
24.00 mi15:39:234:20:0510:5012:22
12:22
#23938
40K
24.85 mi15:50:244:31:0610:5411:01
12:53
#23979
25.2M
25.20 mi15:55:204:36:0210:574:56
14:18
#24014
Finish
26.22 mi16:06:364:47:1810:5811:16
11:03
#24011
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF18-39Seg. OverallSeg. FemalesSeg. F18-39
5K3.11 mi3.11 mi226639216921623042(Top 87%)9370(Top 82%)9370(Top 192%)
10K6.21 mi3.10 mi23162-4999449-2339449-23323487(Top 88%)9615(Top 84%)9615(Top 197%)
15K9.32 mi3.11 mi23147+159429+209429+2023042(Top 87%)9370(Top 82%)9370(Top 192%)
20K12.43 mi3.11 mi23052+959374+559374+5522874(Top 86%)9294(Top 81%)9294(Top 190%)
Half13.11 mi0.68 mi230529376-29376-223185(Top 87%)9464(Top 83%)9464(Top 194%)
25K15.53 mi2.42 mi23191-1399455-799455-7923626(Top 89%)9748(Top 85%)9748(Top 200%)
30K18.64 mi3.11 mi23329-1389557-1029557-10223862(Top 90%)9941(Top 87%)9941(Top 204%)
20M20.00 mi1.36 mi23548-2199684-1279684-12725298(Top 95%)10754(Top 94%)10754(Top 220%)
21M21.00 mi1.00 mi23570-229701-179701-1723545(Top 88%)9836(Top 86%)9836(Top 201%)
35K21.75 mi0.75 mi23646-769747-469747-4625108(Top 94%)10707(Top 94%)10707(Top 219%)
23M23.00 mi1.25 mi23851-2059872-1259872-12525565(Top 96%)10936(Top 96%)10936(Top 224%)
24M24.00 mi1.00 mi23938-879930-589930-5824914(Top 94%)10636(Top 93%)10636(Top 218%)
40K24.85 mi0.85 mi23979-419963-339963-3324845(Top 93%)10593(Top 93%)10593(Top 217%)
25.2M25.20 mi0.35 mi24014-359981-189981-1825244(Top 95%)10804(Top 95%)10804(Top 221%)
Finish26.22 mi1.02 mi24011+39984-39984-324079(Top 90%)10199(Top 89%)10199(Top 209%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 87%
×21stories
+97ft-345ft

Overall

23042

Females

9370

F18-39

9370

5K→10K

3.1 - 6.2 mi

Top 88%
×5stories
+79ft-138ft

Overall

23487

Females

9615

F18-39

9615

10K→15K

6.2 - 9.3 mi

Top 87%
×3stories
+67ft-78ft

Overall

23042

Females

9370

F18-39

9370

15K→20K

9.3 - 12.4 mi

Top 86%
×5stories
+106ft-86ft

Overall

22874

Females

9294

F18-39

9294

20K→Half

12.4 - 13.1 mi

Top 87%
×2stories
+19ft-37ft

Overall

23185

Females

9464

F18-39

9464

Half→25K

13.1 - 15.5 mi

Top 89%
×4stories
+66ft-88ft

Overall

23626

Females

9748

F18-39

9748

25K→30K

15.5 - 18.6 mi

Top 90%
×9stories
+181ft-148ft

Overall

23862

Females

9941

F18-39

9941

30K→20M

18.6 - 20.0 mi

Top 95%
×5stories
+64ft-50ft

Overall

25298

Females

10754

F18-39

10754

20M→21M

20.0 - 21.0 mi

Top 88%
×8stories
+106ft-24ft

Overall

23545

Females

9836

F18-39

9836

21M→35K

21.0 - 21.8 mi

Top 94%
×7stories
+17ft-86ft

Overall

25108

Females

10707

F18-39

10707

35K→23M

21.8 - 23.0 mi

Top 96%
×5stories
+23ft-63ft

Overall

25565

Females

10936

F18-39

10936

23M→24M

23.0 - 24.0 mi

Top 94%
×6stories
+12ft-82ft

Overall

24914

Females

10636

F18-39

10636

24M→40K

24.0 - 24.9 mi

Top 93%
×1story
+6ft-20ft

Overall

24845

Females

10593

F18-39

10593

40K→25.2M

24.9 - 25.2 mi

Top 95%
×1story
+13ft-16ft

Overall

25244

Females

10804

F18-39

10804

25.2M→Finish

25.2 - 26.2 mi

Top 90%
×2stories
+22ft-21ft

Overall

24079

Females

10199

F18-39

10199

Passing Analysis

Category:
Athletes Passed
661
Passed By
2009
Net Change
-1348
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#22663
5K → 10K63562-499#22663#23162
10K → 15K145130+15#23162#23147
15K → 20K17883+95#23147#23052
20K → Half30300#23052#23052
Half → 25K60199-139#23052#23191
25K → 30K71209-138#23191#23329
30K → 20M10229-219#23329#23548
20M → 21M2850-22#23548#23570
21M → 35K1187-76#23570#23646
35K → 23M7212-205#23646#23851
23M → 24M794-87#23851#23938
24M → 40K2061-41#23938#23979
40K → 25.2M136-35#23979#24014
25.2M → Finish3027+3#24014#24011
TOTALS6612009-1348
📊

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