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BOSTON MARATHON 2023

Michelle Ziedonis

Bib: 30521•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

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
9:27/mi
29:21
↑ 97↓ 3451.5%
10K· 6.21 mi
9:23/mi
58:30
↑ 79↓ 1380.4%
15K· 9.32 mi
9:46/mi
1:28:50
↑ 67↓ 78
20K· 12.43 mi
9:59/mi
1:59:50
↑ 106↓ 860.1%
Half· 13.11 mi
9:33/mi
2:06:21
↑ 19↓ 370.5%
25K· 15.53 mi
10:07/mi
2:30:52
↑ 66↓ 880.2%
30K· 18.64 mi
10:30/mi
3:03:29
↑ 181↓ 1480.2%
20M
11:26/mi
3:19:01
↑ 64↓ 500.2%
21M
10:35/mi
3:29:36
↑ 106↓ 241.6%
35K· 21.75 mi
9:59/mi
3:37:04
↑ 17↓ 861.7%
23M
9:57/mi
3:49:32
↑ 23↓ 630.6%
24M
9:25/mi
3:58:57
↓ 821.3%
40K· 24.85 mi
9:27/mi
4:07:02
↓ 200.3%
25.2M
9:20/mi
4:10:15
↑ 13↓ 160.2%
Finish· 26.22 mi
8:26/mi
4:18:51
↑ 22↓ 21

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time2:06:21
Pace9:38 /mi
2nd Half
Distance13.11 mi
Time2:12:30
Pace10:06 /mi
📊Positive Split: 4.9% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:51:5529:219:2729:21
9:27
-
10K
6.21 mi12:21:0458:309:2529:09
9:23
-0:04
15K
9.32 mi12:51:241:28:509:3230:20
9:46
+0:23
20K
12.43 mi13:22:241:59:509:3931:00
9:59
+0:13
Half
13.11 mi13:28:552:06:219:386:31
9:33
-0:26
25K
15.53 mi13:53:262:30:529:4324:31
10:07
+0:34
30K
18.64 mi14:26:033:03:299:5132:37
10:30
+0:23
20M
20.00 mi14:41:353:19:019:5715:32
11:26
+0:56
21M
21.00 mi14:52:103:29:369:5910:35
10:35
-0:51
35K
21.75 mi14:59:383:37:049:597:28
9:59
-0:36
23M
23.00 mi15:12:063:49:329:5912:28
9:57
-0:02
24M
24.00 mi15:21:313:58:579:579:25
9:25
-0:32
40K
24.85 mi15:29:364:07:029:568:05
9:27
+0:02
25.2M
25.20 mi15:32:494:10:159:563:13
9:20
-0:07
Finish
26.22 mi15:41:254:18:519:538:36
8:26
-0:54

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

8:26 /mi

Average Pace

9:53 /mi

Slowest Pace

11:26 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

50:23

19% of race

Time at Steady Pace

2:05:13

48% of race

Time at Slower Pace

1:23:15

32% of race

Average Pace: 9:52 /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 mi11:51:5529:219:2729:21
9:27
#21939
10K
6.21 mi12:21:0458:309:2529:09
9:23
#22094
15K
9.32 mi12:51:241:28:509:3230:20
9:46
#22404
20K
12.43 mi13:22:241:59:509:3931:00
9:59
#22527
Half
13.11 mi13:28:552:06:219:386:31
9:33
#22517
25K
15.53 mi13:53:262:30:529:4324:31
10:07
#22507
30K
18.64 mi14:26:033:03:299:5132:37
10:30
#22426
20M
20.00 mi14:41:353:19:019:5715:32
11:26
#22516
21M
21.00 mi14:52:103:29:369:5910:35
10:35
#22376
35K
21.75 mi14:59:383:37:049:597:28
9:59
#22332
23M
23.00 mi15:12:063:49:329:5912:28
9:57
#22186
24M
24.00 mi15:21:313:58:579:579:25
9:25
#22073
40K
24.85 mi15:29:364:07:029:568:05
9:27
#21965
25.2M
25.20 mi15:32:494:10:159:563:13
9:20
#21879
Finish
26.22 mi15:41:254:18:519:538:36
8:26
#21718
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF18-39Seg. OverallSeg. FemalesSeg. F18-39
5K3.11 mi3.11 mi219398854885422953(Top 86%)9318(Top 82%)9318(Top 191%)
10K6.21 mi3.10 mi22094-1558901-478901-4722178(Top 83%)8915(Top 78%)8915(Top 183%)
15K9.32 mi3.11 mi22404-3109044-1439044-14322953(Top 86%)9318(Top 82%)9318(Top 191%)
20K12.43 mi3.11 mi22527-1239107-639107-6322854(Top 86%)9276(Top 81%)9276(Top 190%)
Half13.11 mi0.68 mi22517+109102+59102+522280(Top 84%)8934(Top 78%)8934(Top 183%)
25K15.53 mi2.42 mi22507+109108-69108-622453(Top 84%)9087(Top 80%)9087(Top 186%)
30K18.64 mi3.11 mi22426+819075+339075+3322208(Top 83%)9017(Top 79%)9017(Top 185%)
20M20.00 mi1.36 mi22516-909147-729147-7223411(Top 88%)9739(Top 85%)9739(Top 199%)
21M21.00 mi1.00 mi22376+1409075+729075+7219870(Top 75%)7860(Top 69%)7860(Top 161%)
35K21.75 mi0.75 mi22332+449057+189057+1821231(Top 80%)8619(Top 75%)8619(Top 176%)
23M23.00 mi1.25 mi22186+1468980+778980+7719883(Top 75%)7899(Top 69%)7899(Top 162%)
24M24.00 mi1.00 mi22073+1138919+618919+6118944(Top 71%)7423(Top 65%)7423(Top 152%)
40K24.85 mi0.85 mi21965+1088872+478872+4718209(Top 68%)7064(Top 62%)7064(Top 145%)
25.2M25.20 mi0.35 mi21879+868833+398833+3914451(Top 54%)5021(Top 44%)5021(Top 103%)
Finish26.22 mi1.02 mi21718+1618749+848749+8415074(Top 57%)5309(Top 46%)5309(Top 109%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 86%
×21story building
+97ft-345ft

Overall

22953

Females

9318

F18-39

9318

5K→10K

3.1 - 6.2 mi

Top 83%
×5story building
+79ft-138ft

Overall

22178

Females

8915

F18-39

8915

10K→15K

6.2 - 9.3 mi

Top 86%
×3story building
+67ft-78ft

Overall

22953

Females

9318

F18-39

9318

15K→20K

9.3 - 12.4 mi

Top 86%
×5story building
+106ft-86ft

Overall

22854

Females

9276

F18-39

9276

20K→Half

12.4 - 13.1 mi

Top 84%
×2story building
+19ft-37ft

Overall

22280

Females

8934

F18-39

8934

Half→25K

13.1 - 15.5 mi

Top 84%
×4story building
+66ft-88ft

Overall

22453

Females

9087

F18-39

9087

25K→30K

15.5 - 18.6 mi

Top 83%
×9story building
+181ft-148ft

Overall

22208

Females

9017

F18-39

9017

30K→20M

18.6 - 20.0 mi

Top 88%
×5story building
+64ft-50ft

Overall

23411

Females

9739

F18-39

9739

20M→21M

20.0 - 21.0 mi

Top 75%
×8story building
+106ft-24ft

Overall

19870

Females

7860

F18-39

7860

21M→35K

21.0 - 21.8 mi

Top 80%
×7story building
+17ft-86ft

Overall

21231

Females

8619

F18-39

8619

35K→23M

21.8 - 23.0 mi

Top 75%
×5story building
+23ft-63ft

Overall

19883

Females

7899

F18-39

7899

23M→24M

23.0 - 24.0 mi

Top 71%
×6story building
+12ft-82ft

Overall

18944

Females

7423

F18-39

7423

24M→40K

24.0 - 24.9 mi

Top 68%
×1story
+6ft-20ft

Overall

18209

Females

7064

F18-39

7064

40K→25.2M

24.9 - 25.2 mi

Top 54%
×1story
+13ft-16ft

Overall

14451

Females

5021

F18-39

5021

25.2M→Finish

25.2 - 26.2 mi

Top 57%
×2story building
+22ft-21ft

Overall

15074

Females

5309

F18-39

5309

Passing Analysis

Category:
Athletes Passed
1497
Passed By
1276
Net Change
+221
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#21939
5K → 10K179334-155#21939#22094
10K → 15K78388-310#22094#22404
15K → 20K94217-123#22404#22527
20K → Half3020+10#22527#22517
Half → 25K10191+10#22517#22507
25K → 30K14968+81#22507#22426
30K → 20M36126-90#22426#22516
20M → 21M1444+140#22516#22376
21M → 35K5915+44#22376#22332
35K → 23M1526+146#22332#22186
23M → 24M1174+113#22186#22073
24M → 40K1102+108#22073#21965
40K → 25.2M860+86#21965#21879
25.2M → Finish1621+161#21879#21718
TOTALS14971276+221
📊

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