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BOSTON MARATHON 2023

Isabelle Vachon

Bib: 21536•F

NY

0:00
0:00
/ mi
Masters
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Overall
#0 / 26622
Gender (Female)
#0 / 11423
Top 39%
Masters (Masters Women)
#0 / 6539
Top 26%
Division (F45-49)
#0 / 1817
Top 29%
Race Day Weather
49°/39°F
light intensity drizzle

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
25:14
Rank: #14888
Start → 5K
25:14 | 8:07/mi
10K· 6.21 mi
50:33
Rank: #15352 (-464)
5K → 10K
25:19 | 8:09/mi
15K· 9.32 mi
1:15:28
Rank: #15108 (+244)
10K → 15K
24:55 | 8:01/mi
20K· 12.43 mi
1:40:30
Rank: #14770 (+338)
15K → 20K
25:02 | 8:03/mi
Half· 13.11 mi
1:46:01
Rank: #14794 (-24)
20K → Half
5:31 | 8:05/mi
25K· 15.53 mi
2:05:41
Rank: #14590 (+204)
Half → 25K
19:40 | 8:07/mi
30K· 18.64 mi
2:33:09
Rank: #14926 (-336)
25K → 30K
27:28 | 8:50/mi
20M
2:44:46
Rank: #14833 (+93)
30K → 20M
11:37 | 8:33/mi
21M
2:53:34
Rank: #14663 (+170)
20M → 21M
8:48 | 8:48/mi
35K· 21.75 mi
2:59:52
Rank: #14646 (+17)
21M → 35K
6:18 | 8:25/mi
23M
3:10:24
Rank: #14521 (+125)
35K → 23M
10:32 | 8:25/mi
24M
3:18:40
Rank: #14431 (+90)
23M → 24M
8:16 | 8:16/mi
40K· 24.85 mi
3:25:56
Rank: #14377 (+54)
24M → 40K
7:16 | 8:30/mi
25.2M
3:29:00
Rank: #14334 (+43)
40K → 25.2M
3:04 | 8:54/mi
Finish· 26.22 mi
3:37:11
Rank: #14239 (+95)
25.2M → Finish
8:11 | 8:02/mi

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:46:01
Pace8:05 /mi
2nd Half
Distance13.11 mi
Time1:51:10
Pace8:29 /mi
📊Positive Split: 4.9% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:18:3025:148:0725:14
8:07
-
10K
6.21 mi11:43:4950:338:0825:19
8:09
+0:02
15K
9.32 mi12:08:441:15:288:0624:55
8:01
-0:08
20K
12.43 mi12:33:461:40:308:0525:02
8:03
+0:02
Half
13.11 mi12:39:171:46:018:055:31
8:05
+0:02
25K
15.53 mi12:58:572:05:418:0519:40
8:07
+0:02
30K
18.64 mi13:26:252:33:098:1327:28
8:50
+0:43
20M
20.00 mi13:38:022:44:468:1411:37
8:33
-0:17
21M
21.00 mi13:46:502:53:348:168:48
8:48
+0:15
35K
21.75 mi13:53:082:59:528:166:18
8:25
-0:23
23M
23.00 mi14:03:403:10:248:1710:32
8:25
0:00
24M
24.00 mi14:11:563:18:408:178:16
8:16
-0:09
40K
24.85 mi14:19:123:25:568:177:16
8:30
+0:14
25.2M
25.20 mi14:22:163:29:008:183:04
8:54
+0:24
Finish
26.22 mi14:30:273:37:118:178:11
8:02
-0:52

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

8:01 /mi

Average Pace

8:17 /mi

Slowest Pace

8:54 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

3:06:39

86% of race

Time at Steady Pace

30:32

14% of race

Time at Slower Pace

0:00

0% of race

Average Pace: 8:17 /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 mi11:18:3025:148:0725:14
8:07
#14888
10K
6.21 mi11:43:4950:338:0825:19
8:09
#15352
15K
9.32 mi12:08:441:15:288:0624:55
8:01
#15108
20K
12.43 mi12:33:461:40:308:0525:02
8:03
#14770
Half
13.11 mi12:39:171:46:018:055:31
8:05
#14794
25K
15.53 mi12:58:572:05:418:0519:40
8:07
#14590
30K
18.64 mi13:26:252:33:098:1327:28
8:50
#14926
20M
20.00 mi13:38:022:44:468:1411:37
8:33
#14833
21M
21.00 mi13:46:502:53:348:168:48
8:48
#14663
35K
21.75 mi13:53:082:59:528:166:18
8:25
#14646
23M
23.00 mi14:03:403:10:248:1710:32
8:25
#14521
24M
24.00 mi14:11:563:18:408:178:16
8:16
#14431
40K
24.85 mi14:19:123:25:568:177:16
8:30
#14377
25.2M
25.20 mi14:22:163:29:008:183:04
8:54
#14334
Finish
26.22 mi14:30:273:37:118:178:11
8:02
#14239
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF45-49Seg. OverallSeg. FemalesSeg. F45-49
5K3.11 mi3.11 mi148884574457414555(Top 55%)4419(Top 39%)4419(Top 243%)
10K6.21 mi3.10 mi15352-4644872-2984872-29815892(Top 60%)5201(Top 46%)5201(Top 286%)
15K9.32 mi3.11 mi15108+2444730+1424730+14214555(Top 55%)4419(Top 39%)4419(Top 243%)
20K12.43 mi3.11 mi14770+3384540+1904540+19013916(Top 52%)4063(Top 36%)4063(Top 224%)
Half13.11 mi0.68 mi14794-244553-134553-1315070(Top 57%)4715(Top 41%)4715(Top 259%)
25K15.53 mi2.42 mi14590+2044462+914462+9113594(Top 51%)3980(Top 35%)3980(Top 219%)
30K18.64 mi3.11 mi14926-3364698-2364698-23616317(Top 61%)5675(Top 50%)5675(Top 312%)
20M20.00 mi1.36 mi14833+934660+384660+3813940(Top 52%)4374(Top 38%)4374(Top 241%)
21M21.00 mi1.00 mi14663+1704587+734587+7312292(Top 46%)3569(Top 31%)3569(Top 196%)
35K21.75 mi0.75 mi14646+174593-64593-614863(Top 56%)5018(Top 44%)5018(Top 276%)
23M23.00 mi1.25 mi14521+1254536+574536+5712695(Top 48%)3908(Top 34%)3908(Top 215%)
24M24.00 mi1.00 mi14431+904515+214515+2113094(Top 49%)4183(Top 37%)4183(Top 230%)
40K24.85 mi0.85 mi14377+544502+134502+1313361(Top 50%)4397(Top 38%)4397(Top 242%)
25.2M25.20 mi0.35 mi14334+434482+204482+2012003(Top 45%)3741(Top 33%)3741(Top 206%)
Finish26.22 mi1.02 mi14239+954451+314451+3112364(Top 46%)3895(Top 34%)3895(Top 214%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 55%
×21stories
+97ft-345ft

Overall

14555

Females

4419

F45-49

4419

5K→10K

3.1 - 6.2 mi

Top 60%
×5stories
+79ft-138ft

Overall

15892

Females

5201

F45-49

5201

10K→15K

6.2 - 9.3 mi

Top 55%
×3stories
+67ft-78ft

Overall

14555

Females

4419

F45-49

4419

15K→20K

9.3 - 12.4 mi

Top 52%
×5stories
+106ft-86ft

Overall

13916

Females

4063

F45-49

4063

20K→Half

12.4 - 13.1 mi

Top 57%
×2stories
+19ft-37ft

Overall

15070

Females

4715

F45-49

4715

Half→25K

13.1 - 15.5 mi

Top 51%
×4stories
+66ft-88ft

Overall

13594

Females

3980

F45-49

3980

25K→30K

15.5 - 18.6 mi

Top 61%
×9stories
+181ft-148ft

Overall

16317

Females

5675

F45-49

5675

30K→20M

18.6 - 20.0 mi

Top 52%
×5stories
+64ft-50ft

Overall

13940

Females

4374

F45-49

4374

20M→21M

20.0 - 21.0 mi

Top 46%
×8stories
+106ft-24ft

Overall

12292

Females

3569

F45-49

3569

21M→35K

21.0 - 21.8 mi

Top 56%
×7stories
+17ft-86ft

Overall

14863

Females

5018

F45-49

5018

35K→23M

21.8 - 23.0 mi

Top 48%
×5stories
+23ft-63ft

Overall

12695

Females

3908

F45-49

3908

23M→24M

23.0 - 24.0 mi

Top 49%
×6stories
+12ft-82ft

Overall

13094

Females

4183

F45-49

4183

24M→40K

24.0 - 24.9 mi

Top 50%
×1story
+6ft-20ft

Overall

13361

Females

4397

F45-49

4397

40K→25.2M

24.9 - 25.2 mi

Top 45%
×1story
+13ft-16ft

Overall

12003

Females

3741

F45-49

3741

25.2M→Finish

25.2 - 26.2 mi

Top 46%
×2stories
+22ft-21ft

Overall

12364

Females

3895

F45-49

3895

Passing Analysis

Category:
Athletes Passed
2082
Passed By
1433
Net Change
+649
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#14888
5K → 10K129593-464#14888#15352
10K → 15K32884+244#15352#15108
15K → 20K37638+338#15108#14770
20K → Half2145-24#14770#14794
Half → 25K25551+204#14794#14590
25K → 30K82418-336#14590#14926
30K → 20M12835+93#14926#14833
20M → 21M18818+170#14833#14663
21M → 35K5639+17#14663#14646
35K → 23M14722+125#14646#14521
23M → 24M12434+90#14521#14431
24M → 40K8228+54#14431#14377
40K → 25.2M529+43#14377#14334
25.2M → Finish11419+95#14334#14239
TOTALS20821433+649
📊

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