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BOSTON MARATHON 2023

Rebecca Kaufman

Bib: 17164•F

NY

0:00
0:00
/ mi
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Overall
#0 / 26622
Top 30%
Gender (Female)
#0 / 11423
Top 11%
Division (F18-39)
#0 / 4884
Top 21%
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
7:14/mi
22:28
↑ 97↓ 3451.5%
10K· 6.21 mi
7:05/mi
44:29
↑ 79↓ 1380.4%
15K· 9.32 mi
7:22/mi
1:07:21
↑ 67↓ 78
20K· 12.43 mi
7:14/mi
1:29:50
↑ 106↓ 860.1%
Half· 13.11 mi
7:02/mi
1:34:38
↑ 19↓ 370.5%
25K· 15.53 mi
7:17/mi
1:52:18
↑ 66↓ 880.2%
30K· 18.64 mi
7:34/mi
2:15:47
↑ 181↓ 1480.2%
20M
7:38/mi
2:26:09
↑ 64↓ 500.2%
21M
8:21/mi
2:34:30
↑ 106↓ 241.6%
35K· 21.75 mi
7:44/mi
2:40:17
↑ 17↓ 861.7%
23M
8:10/mi
2:50:31
↑ 23↓ 630.6%
24M
7:58/mi
2:58:29
↓ 821.3%
40K· 24.85 mi
7:56/mi
3:05:16
↓ 200.3%
25.2M
8:16/mi
3:08:07
↑ 13↓ 160.2%
Finish· 26.22 mi
7:42/mi
3:15:58
↑ 22↓ 21

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:34:38
Pace7:13 /mi
2nd Half
Distance13.11 mi
Time1:41:20
Pace7:44 /mi
📊Positive Split: 7.1% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:12:5822:287:1422:28
7:14
-
10K
6.21 mi11:34:5944:297:1022:01
7:05
-0:09
15K
9.32 mi11:57:511:07:217:1422:52
7:22
+0:17
20K
12.43 mi12:20:201:29:507:1422:29
7:14
-0:08
Half
13.11 mi12:25:081:34:387:134:48
7:02
-0:12
25K
15.53 mi12:42:481:52:187:1417:40
7:17
+0:15
30K
18.64 mi13:06:172:15:477:1723:29
7:34
+0:17
20M
20.00 mi13:16:392:26:097:1810:22
7:38
+0:04
21M
21.00 mi13:25:002:34:307:218:21
8:21
+0:43
35K
21.75 mi13:30:472:40:177:225:47
7:44
-0:37
23M
23.00 mi13:41:012:50:317:2510:14
8:10
+0:26
24M
24.00 mi13:48:592:58:297:267:58
7:58
-0:12
40K
24.85 mi13:55:463:05:167:276:47
7:56
-0:02
25.2M
25.20 mi13:58:373:08:077:282:51
8:16
+0:20
Finish
26.22 mi14:06:283:15:587:297:51
7:42
-0:34

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

7:02 /mi

Average Pace

7:29 /mi

Slowest Pace

8:21 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

2:39:47

82% of race

Time at Steady Pace

27:50

14% of race

Time at Slower Pace

8:21

4% of race

Average Pace: 7:28 /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 mi11:12:5822:287:1422:28
7:14
#7699
10K
6.21 mi11:34:5944:297:1022:01
7:05
#7487
15K
9.32 mi11:57:511:07:217:1422:52
7:22
#7949
20K
12.43 mi12:20:201:29:507:1422:29
7:14
#7764
Half
13.11 mi12:25:081:34:387:134:48
7:02
#7693
25K
15.53 mi12:42:481:52:187:1417:40
7:17
#7579
30K
18.64 mi13:06:172:15:477:1723:29
7:34
#7518
20M
20.00 mi13:16:392:26:097:1810:22
7:38
#7492
21M
21.00 mi13:25:002:34:307:218:21
8:21
#7581
35K
21.75 mi13:30:472:40:177:225:47
7:44
#7633
23M
23.00 mi13:41:012:50:317:2510:14
8:10
#7797
24M
24.00 mi13:48:592:58:297:267:58
7:58
#7924
40K
24.85 mi13:55:463:05:167:276:47
7:56
#7949
25.2M
25.20 mi13:58:373:08:077:282:51
8:16
#7941
Finish
26.22 mi14:06:283:15:587:297:51
7:42
#8007
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF18-39Seg. OverallSeg. FemalesSeg. F18-39
5K3.11 mi3.11 mi76999149149025(Top 34%)1457(Top 13%)1457(Top 30%)
10K6.21 mi3.10 mi7487+212854+60854+607376(Top 28%)855(Top 7%)855(Top 18%)
15K9.32 mi3.11 mi7949-4621017-1631017-1639025(Top 34%)1457(Top 13%)1457(Top 30%)
20K12.43 mi3.11 mi7764+185971+46971+467355(Top 28%)888(Top 8%)888(Top 18%)
Half13.11 mi0.68 mi7693+71946+25946+256834(Top 26%)731(Top 6%)731(Top 15%)
25K15.53 mi2.42 mi7579+114920+26920+267232(Top 27%)920(Top 8%)920(Top 19%)
30K18.64 mi3.11 mi7518+61943-23943-237648(Top 29%)1164(Top 10%)1164(Top 24%)
20M20.00 mi1.36 mi7492+26954-11954-117700(Top 29%)1288(Top 11%)1288(Top 26%)
21M21.00 mi1.00 mi7581-891001-471001-479542(Top 36%)2156(Top 19%)2156(Top 44%)
35K21.75 mi0.75 mi7633-521022-211022-2110162(Top 38%)2431(Top 21%)2431(Top 50%)
23M23.00 mi1.25 mi7797-1641113-911113-9110998(Top 41%)3008(Top 26%)3008(Top 62%)
24M24.00 mi1.00 mi7924-1271178-651178-6511009(Top 41%)3082(Top 27%)3082(Top 63%)
40K24.85 mi0.85 mi7949-251202-241202-249604(Top 36%)2449(Top 21%)2449(Top 50%)
25.2M25.20 mi0.35 mi7941+81210-81210-88135(Top 31%)1862(Top 16%)1862(Top 38%)
Finish26.22 mi1.02 mi8007-661257-471257-4710011(Top 38%)2698(Top 24%)2698(Top 55%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 34%
×21story building
+97ft-345ft

Overall

9025

Females

1457

F18-39

1457

5K→10K

3.1 - 6.2 mi

Top 28%
×5story building
+79ft-138ft

Overall

7376

Females

855

F18-39

855

10K→15K

6.2 - 9.3 mi

Top 34%
×3story building
+67ft-78ft

Overall

9025

Females

1457

F18-39

1457

15K→20K

9.3 - 12.4 mi

Top 28%
×5story building
+106ft-86ft

Overall

7355

Females

888

F18-39

888

20K→Half

12.4 - 13.1 mi

Top 26%
×2story building
+19ft-37ft

Overall

6834

Females

731

F18-39

731

Half→25K

13.1 - 15.5 mi

Top 27%
×4story building
+66ft-88ft

Overall

7232

Females

920

F18-39

920

25K→30K

15.5 - 18.6 mi

Top 29%
×9story building
+181ft-148ft

Overall

7648

Females

1164

F18-39

1164

30K→20M

18.6 - 20.0 mi

Top 29%
×5story building
+64ft-50ft

Overall

7700

Females

1288

F18-39

1288

20M→21M

20.0 - 21.0 mi

Top 36%
×8story building
+106ft-24ft

Overall

9542

Females

2156

F18-39

2156

21M→35K

21.0 - 21.8 mi

Top 38%
×7story building
+17ft-86ft

Overall

10162

Females

2431

F18-39

2431

35K→23M

21.8 - 23.0 mi

Top 41%
×5story building
+23ft-63ft

Overall

10998

Females

3008

F18-39

3008

23M→24M

23.0 - 24.0 mi

Top 41%
×6story building
+12ft-82ft

Overall

11009

Females

3082

F18-39

3082

24M→40K

24.0 - 24.9 mi

Top 36%
×1story
+6ft-20ft

Overall

9604

Females

2449

F18-39

2449

40K→25.2M

24.9 - 25.2 mi

Top 31%
×1story
+13ft-16ft

Overall

8135

Females

1862

F18-39

1862

25.2M→Finish

25.2 - 26.2 mi

Top 38%
×2story building
+22ft-21ft

Overall

10011

Females

2698

F18-39

2698

Passing Analysis

Category:
Athletes Passed
1316
Passed By
1624
Net Change
-308
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#7699
5K → 10K341129+212#7699#7487
10K → 15K27489-462#7487#7949
15K → 20K21631+185#7949#7764
20K → Half721+71#7764#7693
Half → 25K15440+114#7693#7579
25K → 30K161100+61#7579#7518
30K → 20M8256+26#7518#7492
20M → 21M35124-89#7492#7581
21M → 35K2476-52#7581#7633
35K → 23M42206-164#7633#7797
23M → 24M37164-127#7797#7924
24M → 40K4873-25#7924#7949
40K → 25.2M3022+8#7949#7941
25.2M → Finish47113-66#7941#8007
TOTALS13161624-308
📊

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