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BOSTON MARATHON 2023

Isabelle Stewart

Bib: 31171•F

NH

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
31:36
Rank: #23868
Start → 5K
31:36 | 10:10/mi
10K· 6.21 mi
1:01:02
Rank: #23214 (+654)
5K → 10K
29:26 | 9:28/mi
15K· 9.32 mi
1:30:25
Rank: #22878 (+336)
10K → 15K
29:23 | 9:27/mi
20K· 12.43 mi
2:00:27
Rank: #22660 (+218)
15K → 20K
30:02 | 9:40/mi
Half· 13.11 mi
2:07:01
Rank: #22653 (+7)
20K → Half
6:34 | 9:37/mi
25K· 15.53 mi
2:31:04
Rank: #22535 (+118)
Half → 25K
24:03 | 9:55/mi
30K· 18.64 mi
3:01:53
Rank: #22233 (+302)
25K → 30K
30:49 | 9:55/mi
20M
3:16:09
Rank: #22176 (+57)
30K → 20M
14:16 | 10:30/mi
21M
3:26:50
Rank: #22060 (+116)
20M → 21M
10:41 | 10:41/mi
35K· 21.75 mi
3:33:38
Rank: #21949 (+111)
21M → 35K
6:48 | 9:05/mi
23M
3:45:22
Rank: #21741 (+208)
35K → 23M
11:44 | 9:22/mi
24M
3:54:38
Rank: #21609 (+132)
23M → 24M
9:16 | 9:16/mi
40K· 24.85 mi
4:02:49
Rank: #21506 (+103)
24M → 40K
8:11 | 9:34/mi
25.2M
4:06:15
Rank: #21447 (+59)
40K → 25.2M
3:26 | 9:57/mi
Finish· 26.22 mi
4:15:09
Rank: #21272 (+175)
25.2M → Finish
8:54 | 8:44/mi

The Course

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Half Splits

1st Half· via Half⚖️ Balanced
Distance13.11 mi
Time2:07:01
Pace9:41 /mi
2nd Half⚖️ Balanced
Distance13.11 mi
Time2:08:08
Pace9:46 /mi
📊Even Split: Consistent pacing between halves

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:52:2931:3610:1031:36
10:10
-
10K
6.21 mi12:21:551:01:029:4929:26
9:28
-0:42
15K
9.32 mi12:51:181:30:259:4229:23
9:27
-0:01
20K
12.43 mi13:21:202:00:279:4230:02
9:40
+0:13
Half
13.11 mi13:27:542:07:019:416:34
9:37
-0:03
25K
15.53 mi13:51:572:31:049:4324:03
9:55
+0:18
30K
18.64 mi14:22:463:01:539:4530:49
9:55
0:00
20M
20.00 mi14:37:023:16:099:4814:16
10:30
+0:35
21M
21.00 mi14:47:433:26:509:5110:41
10:41
+0:11
35K
21.75 mi14:54:313:33:389:496:48
9:05
-1:36
23M
23.00 mi15:06:153:45:229:4811:44
9:22
+0:17
24M
24.00 mi15:15:313:54:389:479:16
9:16
-0:06
40K
24.85 mi15:23:424:02:499:468:11
9:34
+0:18
25.2M
25.20 mi15:27:084:06:159:463:26
9:57
+0:23
Finish
26.22 mi15:36:024:15:099:448:54
8:44
-1:13

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

8:44 /mi

Average Pace

9:44 /mi

Slowest Pace

10:41 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

36:42

14% of race

Time at Steady Pace

1:43:36

41% of race

Time at Slower Pace

1:54:51

45% of race

Average Pace: 9:44 /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 mi11:52:2931:3610:1031:36
10:10
#23868
10K
6.21 mi12:21:551:01:029:4929:26
9:28
#23214
15K
9.32 mi12:51:181:30:259:4229:23
9:27
#22878
20K
12.43 mi13:21:202:00:279:4230:02
9:40
#22660
Half
13.11 mi13:27:542:07:019:416:34
9:37
#22653
25K
15.53 mi13:51:572:31:049:4324:03
9:55
#22535
30K
18.64 mi14:22:463:01:539:4530:49
9:55
#22233
20M
20.00 mi14:37:023:16:099:4814:16
10:30
#22176
21M
21.00 mi14:47:433:26:509:5110:41
10:41
#22060
35K
21.75 mi14:54:313:33:389:496:48
9:05
#21949
23M
23.00 mi15:06:153:45:229:4811:44
9:22
#21741
24M
24.00 mi15:15:313:54:389:479:16
9:16
#21609
40K
24.85 mi15:23:424:02:499:468:11
9:34
#21506
25.2M
25.20 mi15:27:084:06:159:463:26
9:57
#21447
Finish
26.22 mi15:36:024:15:099:448:54
8:44
#21272
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF18-39Seg. OverallSeg. FemalesSeg. F18-39
5K3.11 mi3.11 mi238689822982222131(Top 83%)8864(Top 78%)8864(Top 181%)
10K6.21 mi3.10 mi23214+6549480+3429480+34222449(Top 84%)9056(Top 79%)9056(Top 185%)
15K9.32 mi3.11 mi22878+3369279+2019279+20122131(Top 83%)8864(Top 78%)8864(Top 181%)
20K12.43 mi3.11 mi22660+2189168+1119168+11122053(Top 83%)8831(Top 77%)8831(Top 181%)
Half13.11 mi0.68 mi22653+79166+29166+222457(Top 84%)9042(Top 79%)9042(Top 185%)
25K15.53 mi2.42 mi22535+1189123+439123+4322033(Top 83%)8851(Top 77%)8851(Top 181%)
30K18.64 mi3.11 mi22233+3028966+1578966+15720801(Top 78%)8231(Top 72%)8231(Top 169%)
20M20.00 mi1.36 mi22176+578944+228944+2221727(Top 82%)8827(Top 77%)8827(Top 181%)
21M21.00 mi1.00 mi22060+1168894+508894+5020125(Top 76%)7997(Top 70%)7997(Top 164%)
35K21.75 mi0.75 mi21949+1118824+708824+7018327(Top 69%)7028(Top 62%)7028(Top 144%)
23M23.00 mi1.25 mi21741+2088738+868738+8617843(Top 67%)6782(Top 59%)6782(Top 139%)
24M24.00 mi1.00 mi21609+1328675+638675+6318365(Top 69%)7098(Top 62%)7098(Top 145%)
40K24.85 mi0.85 mi21506+1038627+488627+4818600(Top 70%)7280(Top 64%)7280(Top 149%)
25.2M25.20 mi0.35 mi21447+598601+268601+2617291(Top 65%)6617(Top 58%)6617(Top 135%)
Finish26.22 mi1.02 mi21272+1758510+918510+9116709(Top 63%)6222(Top 54%)6222(Top 127%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 83%
×21stories
+97ft-345ft

Overall

22131

Females

8864

F18-39

8864

5K→10K

3.1 - 6.2 mi

Top 84%
×5stories
+79ft-138ft

Overall

22449

Females

9056

F18-39

9056

10K→15K

6.2 - 9.3 mi

Top 83%
×3stories
+67ft-78ft

Overall

22131

Females

8864

F18-39

8864

15K→20K

9.3 - 12.4 mi

Top 83%
×5stories
+106ft-86ft

Overall

22053

Females

8831

F18-39

8831

20K→Half

12.4 - 13.1 mi

Top 84%
×2stories
+19ft-37ft

Overall

22457

Females

9042

F18-39

9042

Half→25K

13.1 - 15.5 mi

Top 83%
×4stories
+66ft-88ft

Overall

22033

Females

8851

F18-39

8851

25K→30K

15.5 - 18.6 mi

Top 78%
×9stories
+181ft-148ft

Overall

20801

Females

8231

F18-39

8231

30K→20M

18.6 - 20.0 mi

Top 82%
×5stories
+64ft-50ft

Overall

21727

Females

8827

F18-39

8827

20M→21M

20.0 - 21.0 mi

Top 76%
×8stories
+106ft-24ft

Overall

20125

Females

7997

F18-39

7997

21M→35K

21.0 - 21.8 mi

Top 69%
×7stories
+17ft-86ft

Overall

18327

Females

7028

F18-39

7028

35K→23M

21.8 - 23.0 mi

Top 67%
×5stories
+23ft-63ft

Overall

17843

Females

6782

F18-39

6782

23M→24M

23.0 - 24.0 mi

Top 69%
×6stories
+12ft-82ft

Overall

18365

Females

7098

F18-39

7098

24M→40K

24.0 - 24.9 mi

Top 70%
×1story
+6ft-20ft

Overall

18600

Females

7280

F18-39

7280

40K→25.2M

24.9 - 25.2 mi

Top 65%
×1story
+13ft-16ft

Overall

17291

Females

6617

F18-39

6617

25.2M→Finish

25.2 - 26.2 mi

Top 63%
×2stories
+22ft-21ft

Overall

16709

Females

6222

F18-39

6222

Passing Analysis

Category:
Athletes Passed
2834
Passed By
238
Net Change
+2596
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#23868
5K → 10K69238+654#23868#23214
10K → 15K37034+336#23214#22878
15K → 20K26648+218#22878#22660
20K → Half1912+7#22660#22653
Half → 25K15840+118#22653#22535
25K → 30K3097+302#22535#22233
30K → 20M9134+57#22233#22176
20M → 21M12913+116#22176#22060
21M → 35K1110+111#22060#21949
35K → 23M2102+208#21949#21741
23M → 24M1353+132#21741#21609
24M → 40K1096+103#21609#21506
40K → 25.2M590+59#21506#21447
25.2M → Finish1761+175#21447#21272
TOTALS2834238+2596
📊

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