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BOSTON MARATHON 2023

Sarah Vaillancourt

Bib: 26937•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
29:52
Rank: #22423
Start → 5K
29:52 | 9:37/mi
10K· 6.21 mi
58:31
Rank: #22105 (+318)
5K → 10K
28:39 | 9:13/mi
15K· 9.32 mi
1:26:11
Rank: #21525 (+580)
10K → 15K
27:40 | 8:54/mi
20K· 12.43 mi
1:55:42
Rank: #21539 (-14)
15K → 20K
29:31 | 9:30/mi
Half· 13.11 mi
2:01:49
Rank: #21479 (+60)
20K → Half
6:07 | 8:58/mi
25K· 15.53 mi
2:24:22
Rank: #21263 (+216)
Half → 25K
22:33 | 9:18/mi
30K· 18.64 mi
2:54:49
Rank: #21103 (+160)
25K → 30K
30:27 | 9:48/mi
20M
3:08:34
Rank: #21056 (+47)
30K → 20M
13:45 | 10:07/mi
21M
3:19:21
Rank: #20994 (+62)
20M → 21M
10:47 | 10:47/mi
35K· 21.75 mi
3:26:44
Rank: #20992 (+2)
21M → 35K
7:23 | 9:52/mi
23M
3:39:30
Rank: #20937 (+55)
35K → 23M
12:46 | 10:12/mi
24M
3:49:32
Rank: #20932 (+5)
23M → 24M
10:02 | 10:02/mi
40K· 24.85 mi
3:57:52
Rank: #20848 (+84)
24M → 40K
8:20 | 9:45/mi
25.2M
4:01:45
Rank: #20851 (-3)
40K → 25.2M
3:53 | 11:16/mi
Finish· 26.22 mi
4:11:11
Rank: #20791 (+60)
25.2M → Finish
9:26 | 9:15/mi

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time2:01:49
Pace9:18 /mi
2nd Half
Distance13.11 mi
Time2:09:22
Pace9:52 /mi
📊Positive Split: 6.2% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:46:4129:529:3729:52
9:37
-
10K
6.21 mi12:15:2058:319:2528:39
9:13
-0:24
15K
9.32 mi12:43:001:26:119:1527:40
8:54
-0:19
20K
12.43 mi13:12:311:55:429:1929:31
9:30
+0:36
Half
13.11 mi13:18:382:01:499:186:07
8:58
-0:32
25K
15.53 mi13:41:112:24:229:1822:33
9:18
+0:20
30K
18.64 mi14:11:382:54:499:2330:27
9:48
+0:30
20M
20.00 mi14:25:233:08:349:2613:45
10:07
+0:19
21M
21.00 mi14:36:103:19:219:3010:47
10:47
+0:40
35K
21.75 mi14:43:333:26:449:307:23
9:52
-0:55
23M
23.00 mi14:56:193:39:309:3312:46
10:12
+0:20
24M
24.00 mi15:06:213:49:329:3410:02
10:02
-0:10
40K
24.85 mi15:14:413:57:529:348:20
9:45
-0:17
25.2M
25.20 mi15:18:344:01:459:363:53
11:16
+1:31
Finish
26.22 mi15:28:004:11:119:359:26
9:15
-2:01

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

8:54 /mi

Average Pace

9:35 /mi

Slowest Pace

11:16 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

1:34:25

38% of race

Time at Steady Pace

1:55:35

46% of race

Time at Slower Pace

41:11

16% of race

Average Pace: 9:35 /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 mi11:46:4129:529:3729:52
9:37
#22423
10K
6.21 mi12:15:2058:319:2528:39
9:13
#22105
15K
9.32 mi12:43:001:26:119:1527:40
8:54
#21525
20K
12.43 mi13:12:311:55:429:1929:31
9:30
#21539
Half
13.11 mi13:18:382:01:499:186:07
8:58
#21479
25K
15.53 mi13:41:112:24:229:1822:33
9:18
#21263
30K
18.64 mi14:11:382:54:499:2330:27
9:48
#21103
20M
20.00 mi14:25:233:08:349:2613:45
10:07
#21056
21M
21.00 mi14:36:103:19:219:3010:47
10:47
#20994
35K
21.75 mi14:43:333:26:449:307:23
9:52
#20992
23M
23.00 mi14:56:193:39:309:3312:46
10:12
#20937
24M
24.00 mi15:06:213:49:329:3410:02
10:02
#20932
40K
24.85 mi15:14:413:57:529:348:20
9:45
#20848
25.2M
25.20 mi15:18:344:01:459:363:53
11:16
#20851
Finish
26.22 mi15:28:004:11:119:359:26
9:15
#20791
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF18-39Seg. OverallSeg. FemalesSeg. F18-39
5K3.11 mi3.11 mi224239094909420075(Top 75%)7723(Top 68%)7723(Top 158%)
10K6.21 mi3.10 mi22105+3188908+1868908+18621691(Top 81%)8654(Top 76%)8654(Top 177%)
15K9.32 mi3.11 mi21525+5808572+3368572+33620075(Top 75%)7723(Top 68%)7723(Top 158%)
20K12.43 mi3.11 mi21539-148577-58577-521564(Top 81%)8557(Top 75%)8557(Top 175%)
Half13.11 mi0.68 mi21479+608535+428535+4220358(Top 76%)7892(Top 69%)7892(Top 162%)
25K15.53 mi2.42 mi21263+2168417+1188417+11820213(Top 76%)7818(Top 68%)7818(Top 160%)
30K18.64 mi3.11 mi21103+1608340+778340+7720458(Top 77%)8032(Top 70%)8032(Top 164%)
20M20.00 mi1.36 mi21056+478330+108330+1020811(Top 78%)8309(Top 73%)8309(Top 170%)
21M21.00 mi1.00 mi20994+628307+238307+2320358(Top 76%)8125(Top 71%)8125(Top 166%)
35K21.75 mi0.75 mi20992+28322-158322-1520951(Top 79%)8475(Top 74%)8475(Top 174%)
23M23.00 mi1.25 mi20937+558304+188304+1820579(Top 77%)8288(Top 73%)8288(Top 170%)
24M24.00 mi1.00 mi20932+58306-28306-220899(Top 79%)8494(Top 74%)8494(Top 174%)
40K24.85 mi0.85 mi20848+848266+408266+4019233(Top 72%)7632(Top 67%)7632(Top 156%)
25.2M25.20 mi0.35 mi20851-38278-128278-1221099(Top 79%)8657(Top 76%)8657(Top 177%)
Finish26.22 mi1.02 mi20791+608251+278251+2719229(Top 72%)7582(Top 66%)7582(Top 155%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 75%
×21stories
+97ft-345ft

Overall

20075

Females

7723

F18-39

7723

5K→10K

3.1 - 6.2 mi

Top 81%
×5stories
+79ft-138ft

Overall

21691

Females

8654

F18-39

8654

10K→15K

6.2 - 9.3 mi

Top 75%
×3stories
+67ft-78ft

Overall

20075

Females

7723

F18-39

7723

15K→20K

9.3 - 12.4 mi

Top 81%
×5stories
+106ft-86ft

Overall

21564

Females

8557

F18-39

8557

20K→Half

12.4 - 13.1 mi

Top 76%
×2stories
+19ft-37ft

Overall

20358

Females

7892

F18-39

7892

Half→25K

13.1 - 15.5 mi

Top 76%
×4stories
+66ft-88ft

Overall

20213

Females

7818

F18-39

7818

25K→30K

15.5 - 18.6 mi

Top 77%
×9stories
+181ft-148ft

Overall

20458

Females

8032

F18-39

8032

30K→20M

18.6 - 20.0 mi

Top 78%
×5stories
+64ft-50ft

Overall

20811

Females

8309

F18-39

8309

20M→21M

20.0 - 21.0 mi

Top 76%
×8stories
+106ft-24ft

Overall

20358

Females

8125

F18-39

8125

21M→35K

21.0 - 21.8 mi

Top 79%
×7stories
+17ft-86ft

Overall

20951

Females

8475

F18-39

8475

35K→23M

21.8 - 23.0 mi

Top 77%
×5stories
+23ft-63ft

Overall

20579

Females

8288

F18-39

8288

23M→24M

23.0 - 24.0 mi

Top 79%
×6stories
+12ft-82ft

Overall

20899

Females

8494

F18-39

8494

24M→40K

24.0 - 24.9 mi

Top 72%
×1story
+6ft-20ft

Overall

19233

Females

7632

F18-39

7632

40K→25.2M

24.9 - 25.2 mi

Top 79%
×1story
+13ft-16ft

Overall

21099

Females

8657

F18-39

8657

25.2M→Finish

25.2 - 26.2 mi

Top 72%
×2stories
+22ft-21ft

Overall

19229

Females

7582

F18-39

7582

Passing Analysis

Category:
Athletes Passed
2220
Passed By
588
Net Change
+1632
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#22423
5K → 10K442124+318#22423#22105
10K → 15K59010+580#22105#21525
15K → 20K120134-14#21525#21539
20K → Half655+60#21539#21479
Half → 25K23216+216#21479#21263
25K → 30K21757+160#21263#21103
30K → 20M8841+47#21103#21056
20M → 21M9634+62#21056#20994
21M → 35K4038+2#20994#20992
35K → 23M9944+55#20992#20937
23M → 24M5146+5#20937#20932
24M → 40K917+84#20932#20848
40K → 25.2M1821-3#20848#20851
25.2M → Finish7111+60#20851#20791
TOTALS2220588+1632
📊

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