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BOSTON MARATHON 2023

Laura Boll Peifer

Bib: 11782•F

NJ

0:00
0:00
/ mi
Masters
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Overall
#0 / 26622
Gender (Female)
#0 / 11423
Masters (Masters Women)
#0 / 6539
Division (F40-44)
#0 / 1878
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
8:31/mi
26:29
↑ 97↓ 3451.5%
10K· 6.21 mi
8:47/mi
53:45
↑ 79↓ 1380.4%
15K· 9.32 mi
8:25/mi
1:19:54
↑ 67↓ 78
20K· 12.43 mi
8:30/mi
1:46:20
↑ 106↓ 860.1%
Half· 13.11 mi
8:24/mi
1:52:04
↑ 19↓ 370.5%
25K· 15.53 mi
8:23/mi
2:12:23
↑ 66↓ 880.2%
30K· 18.64 mi
8:50/mi
2:39:51
↑ 181↓ 1480.2%
20M
8:54/mi
2:51:57
↑ 64↓ 500.2%
21M
9:57/mi
3:01:54
↑ 106↓ 241.6%
35K· 21.75 mi
9:03/mi
3:08:40
↑ 17↓ 861.7%
23M
9:17/mi
3:20:17
↑ 23↓ 630.6%
24M
9:23/mi
3:29:40
↓ 821.3%
40K· 24.85 mi
10:00/mi
3:38:13
↓ 200.3%
25.2M
10:58/mi
3:42:00
↑ 13↓ 160.2%
Finish· 26.22 mi
10:15/mi
3:52:27
↑ 22↓ 21

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:52:04
Pace8:33 /mi
2nd Half
Distance13.11 mi
Time2:00:23
Pace9:11 /mi
📊Positive Split: 7.4% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:21:0826:298:3126:29
8:31
-
10K
6.21 mi11:48:2453:458:3927:16
8:47
+0:16
15K
9.32 mi12:14:331:19:548:3426:09
8:25
-0:22
20K
12.43 mi12:40:591:46:208:3326:26
8:30
+0:05
Half
13.11 mi12:46:431:52:048:335:44
8:24
-0:06
25K
15.53 mi13:07:022:12:238:3120:19
8:23
-0:01
30K
18.64 mi13:34:302:39:518:3527:28
8:50
+0:27
20M
20.00 mi13:46:362:51:578:3612:06
8:54
+0:04
21M
21.00 mi13:56:333:01:548:409:57
9:57
+1:03
35K
21.75 mi14:03:193:08:408:416:46
9:03
-0:54
23M
23.00 mi14:14:563:20:178:4211:37
9:17
+0:14
24M
24.00 mi14:24:193:29:408:449:23
9:23
+0:06
40K
24.85 mi14:32:523:38:138:478:33
10:00
+0:37
25.2M
25.20 mi14:36:393:42:008:493:47
10:58
+0:58
Finish
26.22 mi14:47:063:52:278:5210:27
10:15
-0:43

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

8:23 /mi

Average Pace

8:52 /mi

Slowest Pace

10:58 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

1:45:07

45% of race

Time at Steady Pace

1:13:36

32% of race

Time at Slower Pace

53:44

23% of race

Average Pace: 8:52 /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 mi11:21:0826:298:3126:29
8:31
#17727
10K
6.21 mi11:48:2453:458:3927:16
8:47
#18801
15K
9.32 mi12:14:331:19:548:3426:09
8:25
#18315
20K
12.43 mi12:40:591:46:208:3326:26
8:30
#17942
Half
13.11 mi12:46:431:52:048:335:44
8:24
#17887
25K
15.53 mi13:07:022:12:238:3120:19
8:23
#17474
30K
18.64 mi13:34:302:39:518:3527:28
8:50
#17215
20M
20.00 mi13:46:362:51:578:3612:06
8:54
#17123
21M
21.00 mi13:56:333:01:548:409:57
9:57
#17168
35K
21.75 mi14:03:193:08:408:416:46
9:03
#17195
23M
23.00 mi14:14:563:20:178:4211:37
9:17
#17226
24M
24.00 mi14:24:193:29:408:449:23
9:23
#17326
40K
24.85 mi14:32:523:38:138:478:33
10:00
#17480
25.2M
25.20 mi14:36:393:42:008:493:47
10:58
#17578
Finish
26.22 mi14:47:063:52:278:5210:27
10:15
#17872
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF40-44Seg. OverallSeg. FemalesSeg. F40-44
5K3.11 mi3.11 mi177276390639017263(Top 65%)6088(Top 53%)6088(Top 324%)
10K6.21 mi3.10 mi18801-10747012-6227012-62219813(Top 74%)7586(Top 66%)7586(Top 404%)
15K9.32 mi3.11 mi18315+4866700+3126700+31217263(Top 65%)6088(Top 53%)6088(Top 324%)
20K12.43 mi3.11 mi17942+3736488+2126488+21216920(Top 64%)5889(Top 52%)5889(Top 314%)
Half13.11 mi0.68 mi17887+556458+306458+3017217(Top 65%)6033(Top 53%)6033(Top 321%)
25K15.53 mi2.42 mi17474+4136225+2336225+23315476(Top 58%)5131(Top 45%)5131(Top 273%)
30K18.64 mi3.11 mi17215+2596088+1376088+13716334(Top 61%)5692(Top 50%)5692(Top 303%)
20M20.00 mi1.36 mi17123+926049+396049+3916056(Top 60%)5612(Top 49%)5612(Top 299%)
21M21.00 mi1.00 mi17168-456092-436092-4317875(Top 67%)6683(Top 59%)6683(Top 356%)
35K21.75 mi0.75 mi17195-276117-256117-2518092(Top 68%)6886(Top 60%)6886(Top 367%)
23M23.00 mi1.25 mi17226-316155-386155-3817426(Top 65%)6521(Top 57%)6521(Top 347%)
24M24.00 mi1.00 mi17326-1006223-686223-6818791(Top 71%)7320(Top 64%)7320(Top 390%)
40K24.85 mi0.85 mi17480-1546331-1086331-10819966(Top 75%)8042(Top 70%)8042(Top 428%)
25.2M25.20 mi0.35 mi17578-986398-676398-6720401(Top 77%)8258(Top 72%)8258(Top 440%)
Finish26.22 mi1.02 mi17872-2946572-1746572-17422429(Top 84%)9343(Top 82%)9343(Top 497%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 65%
×21story building
+97ft-345ft

Overall

17263

Females

6088

F40-44

6088

5K→10K

3.1 - 6.2 mi

Top 74%
×5story building
+79ft-138ft

Overall

19813

Females

7586

F40-44

7586

10K→15K

6.2 - 9.3 mi

Top 65%
×3story building
+67ft-78ft

Overall

17263

Females

6088

F40-44

6088

15K→20K

9.3 - 12.4 mi

Top 64%
×5story building
+106ft-86ft

Overall

16920

Females

5889

F40-44

5889

20K→Half

12.4 - 13.1 mi

Top 65%
×2story building
+19ft-37ft

Overall

17217

Females

6033

F40-44

6033

Half→25K

13.1 - 15.5 mi

Top 58%
×4story building
+66ft-88ft

Overall

15476

Females

5131

F40-44

5131

25K→30K

15.5 - 18.6 mi

Top 61%
×9story building
+181ft-148ft

Overall

16334

Females

5692

F40-44

5692

30K→20M

18.6 - 20.0 mi

Top 60%
×5story building
+64ft-50ft

Overall

16056

Females

5612

F40-44

5612

20M→21M

20.0 - 21.0 mi

Top 67%
×8story building
+106ft-24ft

Overall

17875

Females

6683

F40-44

6683

21M→35K

21.0 - 21.8 mi

Top 68%
×7story building
+17ft-86ft

Overall

18092

Females

6886

F40-44

6886

35K→23M

21.8 - 23.0 mi

Top 65%
×5story building
+23ft-63ft

Overall

17426

Females

6521

F40-44

6521

23M→24M

23.0 - 24.0 mi

Top 71%
×6story building
+12ft-82ft

Overall

18791

Females

7320

F40-44

7320

24M→40K

24.0 - 24.9 mi

Top 75%
×1story
+6ft-20ft

Overall

19966

Females

8042

F40-44

8042

40K→25.2M

24.9 - 25.2 mi

Top 77%
×1story
+13ft-16ft

Overall

20401

Females

8258

F40-44

8258

25.2M→Finish

25.2 - 26.2 mi

Top 84%
×2story building
+22ft-21ft

Overall

22429

Females

9343

F40-44

9343

Passing Analysis

Category:
Athletes Passed
2151
Passed By
2296
Net Change
-145
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#17727
5K → 10K541128-1074#17727#18801
10K → 15K52741+486#18801#18315
15K → 20K40128+373#18315#17942
20K → Half7318+55#17942#17887
Half → 25K4174+413#17887#17474
25K → 30K30849+259#17474#17215
30K → 20M12634+92#17215#17123
20M → 21M70115-45#17123#17168
21M → 35K3158-27#17168#17195
35K → 23M73104-31#17195#17226
23M → 24M32132-100#17226#17326
24M → 40K20174-154#17326#17480
40K → 25.2M11109-98#17480#17578
25.2M → Finish8302-294#17578#17872
TOTALS21512296-145
📊

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