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BOSTON MARATHON 2023

Siobhan Mitchell

Bib: 10675•F

MA

0:00
0:00
/ mi
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Overall
#0 / 26622
Top 17%
Gender (Female)
#0 / 11423
Top 3%
Division (F18-39)
#0 / 4884
Top 6%
Race Day Weather
49°/39°F
light intensity drizzle

⏱️ Race Timeline

Course Elevation
7–469 ft
≈
×2stacked redwood trees
•▲ 890 ft climb · ▼ 1342 ft descent
Ribbon color based on
FasterSteadySlower· vs. your average pace
Start
0:00
Race begins
5K· 3.11 mi
6:55/mi
21:28
↑ 97↓ 3451.5%
10K· 6.21 mi
6:52/mi
42:48
↑ 79↓ 1380.4%
15K· 9.32 mi
6:55/mi
1:04:18
↑ 67↓ 78
20K· 12.43 mi
7:00/mi
1:26:03
↑ 106↓ 860.1%
Half· 13.11 mi
6:55/mi
1:30:46
↑ 19↓ 370.5%
25K· 15.53 mi
6:53/mi
1:47:27
↑ 66↓ 880.2%
30K· 18.64 mi
7:07/mi
2:09:35
↑ 181↓ 1480.2%
20M
7:02/mi
2:19:08
↑ 64↓ 500.2%
21M
7:16/mi
2:26:24
↑ 106↓ 241.6%
35K· 21.75 mi
6:40/mi
2:31:23
↑ 17↓ 861.7%
23M
7:04/mi
2:40:14
↑ 23↓ 630.6%
24M
6:52/mi
2:47:06
↓ 821.3%
40K· 24.85 mi
6:54/mi
2:53:00
↓ 200.3%
25.2M
7:12/mi
2:55:29
↑ 13↓ 160.2%
Finish· 26.22 mi
6:33/mi
3:02:09
↑ 22↓ 21

The Course

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Half Splits

1st Half· via Half⚖️ Balanced
Distance13.11 mi
Time1:30:46
Pace6:55 /mi
2nd Half⚖️ Balanced
Distance13.11 mi
Time1:31:23
Pace6:58 /mi
📊Even Split: Consistent pacing between halves

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:47:4221:286:5521:28
6:55
-
10K
6.21 mi11:09:0242:486:5321:20
6:52
-0:03
15K
9.32 mi11:30:321:04:186:5421:30
6:55
+0:03
20K
12.43 mi11:52:171:26:036:5521:45
7:00
+0:05
Half
13.11 mi11:57:001:30:466:554:43
6:55
-0:05
25K
15.53 mi12:13:411:47:276:5516:41
6:53
-0:02
30K
18.64 mi12:35:492:09:356:5722:08
7:07
+0:14
20M
20.00 mi12:45:222:19:086:579:33
7:02
-0:05
21M
21.00 mi12:52:382:26:246:587:16
7:16
+0:14
35K
21.75 mi12:57:372:31:236:584:59
6:40
-0:36
23M
23.00 mi13:06:282:40:146:588:51
7:04
+0:24
24M
24.00 mi13:13:202:47:066:586:52
6:52
-0:12
40K
24.85 mi13:19:142:53:006:585:54
6:54
+0:02
25.2M
25.20 mi13:21:432:55:296:582:29
7:12
+0:18
Finish
26.22 mi13:28:233:02:096:576:40
6:33
-0:39

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

6:33 /mi

Average Pace

6:57 /mi

Slowest Pace

7:16 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

2:54:53

96% of race

Time at Steady Pace

7:16

4% of race

Time at Slower Pace

0:00

0% of race

Average Pace: 6:57 /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 mi10:47:4221:286:5521:28
6:55
#5646
10K
6.21 mi11:09:0242:486:5321:20
6:52
#5740
15K
9.32 mi11:30:321:04:186:5421:30
6:55
#5841
20K
12.43 mi11:52:171:26:036:5521:45
7:00
#5863
Half
13.11 mi11:57:001:30:466:554:43
6:55
#5880
25K
15.53 mi12:13:411:47:276:5516:41
6:53
#5697
30K
18.64 mi12:35:492:09:356:5722:08
7:07
#5540
20M
20.00 mi12:45:222:19:086:579:33
7:02
#5401
21M
21.00 mi12:52:382:26:246:587:16
7:16
#5227
35K
21.75 mi12:57:372:31:236:584:59
6:40
#5136
23M
23.00 mi13:06:282:40:146:588:51
7:04
#5030
24M
24.00 mi13:13:202:47:066:586:52
6:52
#4937
40K
24.85 mi13:19:142:53:006:585:54
6:54
#4845
25.2M
25.20 mi13:21:432:55:296:582:29
7:12
#4787
Finish
26.22 mi13:28:233:02:096:576:40
6:33
#4651
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF18-39Seg. OverallSeg. FemalesSeg. F18-39
5K3.11 mi3.11 mi56464424426088(Top 23%)552(Top 5%)552(Top 11%)
10K6.21 mi3.10 mi5740-94460-18460-185896(Top 22%)509(Top 4%)509(Top 10%)
15K9.32 mi3.11 mi5841-101481-21481-216088(Top 23%)552(Top 5%)552(Top 11%)
20K12.43 mi3.11 mi5863-22484-3484-35995(Top 23%)516(Top 5%)516(Top 11%)
Half13.11 mi0.68 mi5880-17487-3487-36109(Top 23%)526(Top 5%)526(Top 11%)
25K15.53 mi2.42 mi5697+183452+35452+354840(Top 18%)356(Top 3%)356(Top 7%)
30K18.64 mi3.11 mi5540+157440+12440+125071(Top 19%)409(Top 4%)409(Top 8%)
20M20.00 mi1.36 mi5401+139417+23417+234227(Top 16%)321(Top 3%)321(Top 7%)
21M21.00 mi1.00 mi5227+174400+17400+173473(Top 13%)244(Top 2%)244(Top 5%)
35K21.75 mi0.75 mi5136+91395+5395+53397(Top 13%)240(Top 2%)240(Top 5%)
23M23.00 mi1.25 mi5030+106390+5390+54161(Top 16%)345(Top 3%)345(Top 7%)
24M24.00 mi1.00 mi4937+93379+11379+114042(Top 15%)353(Top 3%)353(Top 7%)
40K24.85 mi0.85 mi4845+92367+12367+123365(Top 13%)288(Top 3%)288(Top 6%)
25.2M25.20 mi0.35 mi4787+58361+6361+62611(Top 10%)203(Top 2%)203(Top 4%)
Finish26.22 mi1.02 mi4651+136342+19342+192713(Top 10%)234(Top 2%)234(Top 5%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 23%
×21story building
+97ft-345ft

Overall

6088

Females

552

F18-39

552

5K→10K

3.1 - 6.2 mi

Top 22%
×5story building
+79ft-138ft

Overall

5896

Females

509

F18-39

509

10K→15K

6.2 - 9.3 mi

Top 23%
×3story building
+67ft-78ft

Overall

6088

Females

552

F18-39

552

15K→20K

9.3 - 12.4 mi

Top 23%
×5story building
+106ft-86ft

Overall

5995

Females

516

F18-39

516

20K→Half

12.4 - 13.1 mi

Top 23%
×2story building
+19ft-37ft

Overall

6109

Females

526

F18-39

526

Half→25K

13.1 - 15.5 mi

Top 18%
×4story building
+66ft-88ft

Overall

4840

Females

356

F18-39

356

25K→30K

15.5 - 18.6 mi

Top 19%
×9story building
+181ft-148ft

Overall

5071

Females

409

F18-39

409

30K→20M

18.6 - 20.0 mi

Top 16%
×5story building
+64ft-50ft

Overall

4227

Females

321

F18-39

321

20M→21M

20.0 - 21.0 mi

Top 13%
×8story building
+106ft-24ft

Overall

3473

Females

244

F18-39

244

21M→35K

21.0 - 21.8 mi

Top 13%
×7story building
+17ft-86ft

Overall

3397

Females

240

F18-39

240

35K→23M

21.8 - 23.0 mi

Top 16%
×5story building
+23ft-63ft

Overall

4161

Females

345

F18-39

345

23M→24M

23.0 - 24.0 mi

Top 15%
×6story building
+12ft-82ft

Overall

4042

Females

353

F18-39

353

24M→40K

24.0 - 24.9 mi

Top 13%
×1story
+6ft-20ft

Overall

3365

Females

288

F18-39

288

40K→25.2M

24.9 - 25.2 mi

Top 10%
×1story
+13ft-16ft

Overall

2611

Females

203

F18-39

203

25.2M→Finish

25.2 - 26.2 mi

Top 10%
×2story building
+22ft-21ft

Overall

2713

Females

234

F18-39

234

Passing Analysis

Category:
Athletes Passed
1688
Passed By
693
Net Change
+995
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#5646
5K → 10K157251-94#5646#5740
10K → 15K81182-101#5740#5841
15K → 20K95117-22#5841#5863
20K → Half1734-17#5863#5880
Half → 25K1918+183#5880#5697
25K → 30K20346+157#5697#5540
30K → 20M1456+139#5540#5401
20M → 21M1773+174#5401#5227
21M → 35K921+91#5227#5136
35K → 23M12216+106#5136#5030
23M → 24M10512+93#5030#4937
24M → 40K997+92#4937#4845
40K → 25.2M613+58#4845#4787
25.2M → Finish1437+136#4787#4651
TOTALS1688693+995
📊

Passing Visuals

Category:
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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