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BOSTON MARATHON 2023

Rebecca Sondelski

Bib: 16752•F

OH

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0:00
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Overall
#0 / 26622
Top 27%
Gender (Female)
#0 / 11423
Top 8%
Division (F18-39)
#0 / 4884
Top 15%
Race Day Weather
49°/39°F
light intensity drizzle

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
23:23
Rank: #9857
Start → 5K
23:23 | 7:32/mi
10K· 6.21 mi
46:31
Rank: #9891 (-34)
5K → 10K
23:08 | 7:27/mi
15K· 9.32 mi
1:09:17
Rank: #9462 (+429)
10K → 15K
22:46 | 7:20/mi
20K· 12.43 mi
1:32:02
Rank: #9046 (+416)
15K → 20K
22:45 | 7:19/mi
Half· 13.11 mi
1:36:51
Rank: #8914 (+132)
20K → Half
4:49 | 7:04/mi
25K· 15.53 mi
1:54:17
Rank: #8496 (+418)
Half → 25K
17:26 | 7:11/mi
30K· 18.64 mi
2:16:51
Rank: #7951 (+545)
25K → 30K
22:34 | 7:16/mi
20M
2:26:56
Rank: #7781 (+170)
30K → 20M
10:05 | 7:25/mi
21M
2:34:56
Rank: #7700 (+81)
20M → 21M
8:00 | 8:00/mi
35K· 21.75 mi
2:40:22
Rank: #7657 (+43)
21M → 35K
5:26 | 7:16/mi
23M
2:49:34
Rank: #7477 (+180)
35K → 23M
9:12 | 7:21/mi
24M
2:56:53
Rank: #7415 (+62)
23M → 24M
7:19 | 7:19/mi
40K· 24.85 mi
3:03:03
Rank: #7294 (+121)
24M → 40K
6:10 | 7:13/mi
25.2M
3:05:42
Rank: #7243 (+51)
40K → 25.2M
2:39 | 7:41/mi
Finish· 26.22 mi
3:12:43
Rank: #7071 (+172)
25.2M → Finish
7:01 | 6:53/mi

The Course

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Half Splits

1st Half· via Half
Distance13.11 mi
Time1:36:51
Pace7:23 /mi
2nd Half✓ Faster
Distance13.11 mi
Time1:35:52
Pace7:19 /mi
📊Negative Split: 1.0% faster second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:13:3623:237:3223:23
7:32
-
10K
6.21 mi11:36:4446:317:2923:08
7:27
-0:05
15K
9.32 mi11:59:301:09:177:2622:46
7:20
-0:07
20K
12.43 mi12:22:151:32:027:2422:45
7:19
-0:01
Half
13.11 mi12:27:041:36:517:234:49
7:04
-0:15
25K
15.53 mi12:44:301:54:177:2117:26
7:11
+0:07
30K
18.64 mi13:07:042:16:517:2022:34
7:16
+0:05
20M
20.00 mi13:17:092:26:567:2110:05
7:25
+0:09
21M
21.00 mi13:25:092:34:567:238:00
8:00
+0:35
35K
21.75 mi13:30:352:40:227:225:26
7:16
-0:44
23M
23.00 mi13:39:472:49:347:229:12
7:21
+0:05
24M
24.00 mi13:47:062:56:537:227:19
7:19
-0:02
40K
24.85 mi13:53:163:03:037:226:10
7:13
-0:06
25.2M
25.20 mi13:55:553:05:427:222:39
7:41
+0:28
Finish
26.22 mi14:02:563:12:437:217:01
6:53
-0:48

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

6:53 /mi

Average Pace

7:21 /mi

Slowest Pace

8:00 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

3:02:04

94% of race

Time at Steady Pace

10:39

6% of race

Time at Slower Pace

0:00

0% of race

Average Pace: 7:21 /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 mi11:13:3623:237:3223:23
7:32
#9857
10K
6.21 mi11:36:4446:317:2923:08
7:27
#9891
15K
9.32 mi11:59:301:09:177:2622:46
7:20
#9462
20K
12.43 mi12:22:151:32:027:2422:45
7:19
#9046
Half
13.11 mi12:27:041:36:517:234:49
7:04
#8914
25K
15.53 mi12:44:301:54:177:2117:26
7:11
#8496
30K
18.64 mi13:07:042:16:517:2022:34
7:16
#7951
20M
20.00 mi13:17:092:26:567:2110:05
7:25
#7781
21M
21.00 mi13:25:092:34:567:238:00
8:00
#7700
35K
21.75 mi13:30:352:40:227:225:26
7:16
#7657
23M
23.00 mi13:39:472:49:347:229:12
7:21
#7477
24M
24.00 mi13:47:062:56:537:227:19
7:19
#7415
40K
24.85 mi13:53:163:03:037:226:10
7:13
#7294
25.2M
25.20 mi13:55:553:05:427:222:39
7:41
#7243
Finish
26.22 mi14:02:563:12:437:217:01
6:53
#7071
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF18-39Seg. OverallSeg. FemalesSeg. F18-39
5K3.11 mi3.11 mi9857178317838797(Top 33%)1362(Top 12%)1362(Top 28%)
10K6.21 mi3.10 mi9891-341788-51788-510025(Top 38%)1827(Top 16%)1827(Top 37%)
15K9.32 mi3.11 mi9462+4291598+1901598+1908797(Top 33%)1362(Top 12%)1362(Top 28%)
20K12.43 mi3.11 mi9046+4161457+1411457+1417960(Top 30%)1088(Top 10%)1088(Top 22%)
Half13.11 mi0.68 mi8914+1321410+471410+476979(Top 26%)763(Top 7%)763(Top 16%)
25K15.53 mi2.42 mi8496+4181258+1521258+1526639(Top 25%)745(Top 7%)745(Top 15%)
30K18.64 mi3.11 mi7951+5451095+1631095+1635851(Top 22%)587(Top 5%)587(Top 12%)
20M20.00 mi1.36 mi7781+1701050+451050+456319(Top 24%)793(Top 7%)793(Top 16%)
21M21.00 mi1.00 mi7700+811044+61044+67366(Top 28%)1262(Top 11%)1262(Top 26%)
35K21.75 mi0.75 mi7657+431029+151029+156932(Top 26%)1073(Top 9%)1073(Top 22%)
23M23.00 mi1.25 mi7477+180996+33996+335588(Top 21%)687(Top 6%)687(Top 14%)
24M24.00 mi1.00 mi7415+62994+2994+26512(Top 24%)1073(Top 9%)1073(Top 22%)
40K24.85 mi0.85 mi7294+121974+20974+204992(Top 19%)650(Top 6%)650(Top 13%)
25.2M25.20 mi0.35 mi7243+51963+11963+114876(Top 18%)683(Top 6%)683(Top 14%)
Finish26.22 mi1.02 mi7071+172936+27936+274582(Top 17%)602(Top 5%)602(Top 12%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 33%
×21stories
+97ft-345ft

Overall

8797

Females

1362

F18-39

1362

5K→10K

3.1 - 6.2 mi

Top 38%
×5stories
+79ft-138ft

Overall

10025

Females

1827

F18-39

1827

10K→15K

6.2 - 9.3 mi

Top 33%
×3stories
+67ft-78ft

Overall

8797

Females

1362

F18-39

1362

15K→20K

9.3 - 12.4 mi

Top 30%
×5stories
+106ft-86ft

Overall

7960

Females

1088

F18-39

1088

20K→Half

12.4 - 13.1 mi

Top 26%
×2stories
+19ft-37ft

Overall

6979

Females

763

F18-39

763

Half→25K

13.1 - 15.5 mi

Top 25%
×4stories
+66ft-88ft

Overall

6639

Females

745

F18-39

745

25K→30K

15.5 - 18.6 mi

Top 22%
×9stories
+181ft-148ft

Overall

5851

Females

587

F18-39

587

30K→20M

18.6 - 20.0 mi

Top 24%
×5stories
+64ft-50ft

Overall

6319

Females

793

F18-39

793

20M→21M

20.0 - 21.0 mi

Top 28%
×8stories
+106ft-24ft

Overall

7366

Females

1262

F18-39

1262

21M→35K

21.0 - 21.8 mi

Top 26%
×7stories
+17ft-86ft

Overall

6932

Females

1073

F18-39

1073

35K→23M

21.8 - 23.0 mi

Top 21%
×5stories
+23ft-63ft

Overall

5588

Females

687

F18-39

687

23M→24M

23.0 - 24.0 mi

Top 24%
×6stories
+12ft-82ft

Overall

6512

Females

1073

F18-39

1073

24M→40K

24.0 - 24.9 mi

Top 19%
×1story
+6ft-20ft

Overall

4992

Females

650

F18-39

650

40K→25.2M

24.9 - 25.2 mi

Top 18%
×1story
+13ft-16ft

Overall

4876

Females

683

F18-39

683

25.2M→Finish

25.2 - 26.2 mi

Top 17%
×2stories
+22ft-21ft

Overall

4582

Females

602

F18-39

602

Passing Analysis

Category:
Athletes Passed
3266
Passed By
480
Net Change
+2786
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#9857
5K → 10K295329-34#9857#9891
10K → 15K46334+429#9891#9462
15K → 20K42812+416#9462#9046
20K → Half1320+132#9046#8914
Half → 25K4180+418#8914#8496
25K → 30K5483+545#8496#7951
30K → 20M1799+170#7951#7781
20M → 21M10726+81#7781#7700
21M → 35K5815+43#7700#7657
35K → 23M1855+180#7657#7477
23M → 24M9028+62#7477#7415
24M → 40K1287+121#7415#7294
40K → 25.2M532+51#7294#7243
25.2M → Finish18210+172#7243#7071
TOTALS3266480+2786
📊

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