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BOSTON MARATHON 2023

Rachel Lamb

Bib: 25477•F

VA

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

Start
0:00:00
Race begins
5K· 3.11 mi
34:37
Rank: #25870
Start → 5K
34:37 | 11:09/mi
10K· 6.21 mi
1:10:05
Rank: #25900 (-30)
5K → 10K
35:28 | 11:25/mi
15K· 9.32 mi
1:46:18
Rank: #25889 (+11)
10K → 15K
36:13 | 11:39/mi
20K· 12.43 mi
2:24:12
Rank: #25884 (+5)
15K → 20K
37:54 | 12:12/mi
Half· 13.11 mi
2:32:19
Rank: #25881 (+3)
20K → Half
8:07 | 11:54/mi
25K· 15.53 mi
3:03:45
Rank: #25876 (+5)
Half → 25K
31:26 | 12:58/mi
30K· 18.64 mi
3:43:46
Rank: #25791 (+85)
25K → 30K
40:01 | 12:53/mi
20M
4:01:26
Rank: #25759 (+32)
30K → 20M
17:40 | 13:00/mi
21M
4:14:16
Rank: #25678 (+81)
20M → 21M
12:50 | 12:50/mi
35K· 21.75 mi
4:23:20
Rank: #25656 (+22)
21M → 35K
9:04 | 12:07/mi
23M
4:40:30
Rank: #25678 (-22)
35K → 23M
17:10 | 13:43/mi
24M
4:53:29
Rank: #25681 (-3)
23M → 24M
12:59 | 12:59/mi
40K· 24.85 mi
5:04:01
Rank: #25650 (+31)
24M → 40K
10:32 | 12:19/mi
25.2M
5:08:21
Rank: #25618 (+32)
40K → 25.2M
4:20 | 12:34/mi
Finish· 26.22 mi
5:18:35
Rank: #25540 (+78)
25.2M → Finish
10:14 | 10:03/mi

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time2:32:19
Pace11:37 /mi
2nd Half
Distance13.11 mi
Time2:46:16
Pace12:41 /mi
📊Positive Split: 9.2% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:52:1734:3711:0934:37
11:09
-
10K
6.21 mi12:27:451:10:0511:1735:28
11:25
+0:16
15K
9.32 mi13:03:581:46:1811:2436:13
11:39
+0:14
20K
12.43 mi13:41:522:24:1211:3637:54
12:12
+0:33
Half
13.11 mi13:49:592:32:1911:378:07
11:54
-0:18
25K
15.53 mi14:21:253:03:4511:5031:26
12:58
+1:04
30K
18.64 mi15:01:263:43:4612:0040:01
12:53
-0:05
20M
20.00 mi15:19:064:01:2612:0417:40
13:00
+0:07
21M
21.00 mi15:31:564:14:1612:0612:50
12:50
-0:10
35K
21.75 mi15:41:004:23:2012:079:04
12:07
-0:43
23M
23.00 mi15:58:104:40:3012:1217:10
13:43
+1:36
24M
24.00 mi16:11:094:53:2912:1412:59
12:59
-0:44
40K
24.85 mi16:21:415:04:0112:1410:32
12:19
-0:40
25.2M
25.20 mi16:26:015:08:2112:144:20
12:34
+0:15
Finish
26.22 mi16:36:155:18:3512:1010:14
10:03
-2:31

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

10:03 /mi

Average Pace

12:10 /mi

Slowest Pace

13:43 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

1:56:32

37% of race

Time at Steady Pace

1:09:57

22% of race

Time at Slower Pace

2:12:06

41% of race

Average Pace: 12:09 /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 mi11:52:1734:3711:0934:37
11:09
#25870
10K
6.21 mi12:27:451:10:0511:1735:28
11:25
#25900
15K
9.32 mi13:03:581:46:1811:2436:13
11:39
#25889
20K
12.43 mi13:41:522:24:1211:3637:54
12:12
#25884
Half
13.11 mi13:49:592:32:1911:378:07
11:54
#25881
25K
15.53 mi14:21:253:03:4511:5031:26
12:58
#25876
30K
18.64 mi15:01:263:43:4612:0040:01
12:53
#25791
20M
20.00 mi15:19:064:01:2612:0417:40
13:00
#25759
21M
21.00 mi15:31:564:14:1612:0612:50
12:50
#25678
35K
21.75 mi15:41:004:23:2012:079:04
12:07
#25656
23M
23.00 mi15:58:104:40:3012:1217:10
13:43
#25678
24M
24.00 mi16:11:094:53:2912:1412:59
12:59
#25681
40K
24.85 mi16:21:415:04:0112:1410:32
12:19
#25650
25.2M
25.20 mi16:26:015:08:2112:144:20
12:34
#25618
Finish
26.22 mi16:36:155:18:3512:1010:14
10:03
#25540
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF18-39Seg. OverallSeg. FemalesSeg. F18-39
5K3.11 mi3.11 mi25870109691096925841(Top 97%)10945(Top 96%)10945(Top 224%)
10K6.21 mi3.10 mi25900-3010979-1010979-1025895(Top 97%)10976(Top 96%)10976(Top 225%)
15K9.32 mi3.11 mi25889+1110970+910970+925841(Top 97%)10945(Top 96%)10945(Top 224%)
20K12.43 mi3.11 mi25884+510963+710963+725767(Top 97%)10928(Top 96%)10928(Top 224%)
Half13.11 mi0.68 mi25881+310964-110964-125809(Top 97%)10956(Top 96%)10956(Top 224%)
25K15.53 mi2.42 mi25876+510974-1010974-1025850(Top 97%)10993(Top 96%)10993(Top 225%)
30K18.64 mi3.11 mi25791+8510934+4010934+4025318(Top 95%)10747(Top 94%)10747(Top 220%)
20M20.00 mi1.36 mi25759+3210921+1310921+1325177(Top 95%)10687(Top 94%)10687(Top 219%)
21M21.00 mi1.00 mi25678+8110877+4410877+4423893(Top 90%)10034(Top 88%)10034(Top 205%)
35K21.75 mi0.75 mi25656+2210871+610871+624811(Top 93%)10565(Top 92%)10565(Top 216%)
23M23.00 mi1.25 mi25678-2210885-1410885-1425633(Top 96%)10969(Top 96%)10969(Top 225%)
24M24.00 mi1.00 mi25681-310895-1010895-1025461(Top 96%)10908(Top 95%)10908(Top 223%)
40K24.85 mi0.85 mi25650+3110880+1510880+1524257(Top 91%)10314(Top 90%)10314(Top 211%)
25.2M25.20 mi0.35 mi25618+3210861+1910861+1923413(Top 88%)9895(Top 87%)9895(Top 203%)
Finish26.22 mi1.02 mi25540+7810832+2910832+2921898(Top 82%)9069(Top 79%)9069(Top 186%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 97%
×21stories
+97ft-345ft

Overall

25841

Females

10945

F18-39

10945

5K→10K

3.1 - 6.2 mi

Top 97%
×5stories
+79ft-138ft

Overall

25895

Females

10976

F18-39

10976

10K→15K

6.2 - 9.3 mi

Top 97%
×3stories
+67ft-78ft

Overall

25841

Females

10945

F18-39

10945

15K→20K

9.3 - 12.4 mi

Top 97%
×5stories
+106ft-86ft

Overall

25767

Females

10928

F18-39

10928

20K→Half

12.4 - 13.1 mi

Top 97%
×2stories
+19ft-37ft

Overall

25809

Females

10956

F18-39

10956

Half→25K

13.1 - 15.5 mi

Top 97%
×4stories
+66ft-88ft

Overall

25850

Females

10993

F18-39

10993

25K→30K

15.5 - 18.6 mi

Top 95%
×9stories
+181ft-148ft

Overall

25318

Females

10747

F18-39

10747

30K→20M

18.6 - 20.0 mi

Top 95%
×5stories
+64ft-50ft

Overall

25177

Females

10687

F18-39

10687

20M→21M

20.0 - 21.0 mi

Top 90%
×8stories
+106ft-24ft

Overall

23893

Females

10034

F18-39

10034

21M→35K

21.0 - 21.8 mi

Top 93%
×7stories
+17ft-86ft

Overall

24811

Females

10565

F18-39

10565

35K→23M

21.8 - 23.0 mi

Top 96%
×5stories
+23ft-63ft

Overall

25633

Females

10969

F18-39

10969

23M→24M

23.0 - 24.0 mi

Top 96%
×6stories
+12ft-82ft

Overall

25461

Females

10908

F18-39

10908

24M→40K

24.0 - 24.9 mi

Top 91%
×1story
+6ft-20ft

Overall

24257

Females

10314

F18-39

10314

40K→25.2M

24.9 - 25.2 mi

Top 88%
×1story
+13ft-16ft

Overall

23413

Females

9895

F18-39

9895

25.2M→Finish

25.2 - 26.2 mi

Top 82%
×2stories
+22ft-21ft

Overall

21898

Females

9069

F18-39

9069

Passing Analysis

Category:
Athletes Passed
722
Passed By
392
Net Change
+330
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#25870
5K → 10K98128-30#25870#25900
10K → 15K8170+11#25900#25889
15K → 20K5853+5#25889#25884
20K → Half1512+3#25884#25881
Half → 25K4237+5#25881#25876
25K → 30K10217+85#25876#25791
30K → 20M4210+32#25791#25759
20M → 21M832+81#25759#25678
21M → 35K264+22#25678#25656
35K → 23M1638-22#25656#25678
23M → 24M1720-3#25678#25681
24M → 40K321+31#25681#25650
40K → 25.2M320+32#25650#25618
25.2M → Finish780+78#25618#25540
TOTALS722392+330
📊

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