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BOSTON MARATHON 2023

Lauren Johnson

Bib: 20527•F

CA

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
8:35/mi
26:40
↑ 97↓ 3451.5%
10K· 6.21 mi
8:30/mi
53:03
↑ 79↓ 1380.4%
15K· 9.32 mi
8:49/mi
1:20:27
↑ 67↓ 78
20K· 12.43 mi
10:04/mi
1:51:44
↑ 106↓ 860.1%
Half· 13.11 mi
9:04/mi
1:57:55
↑ 19↓ 370.5%
25K· 15.53 mi
10:52/mi
2:24:17
↑ 66↓ 880.2%
30K· 18.64 mi
12:01/mi
3:01:36
↑ 181↓ 1480.2%
20M
11:24/mi
3:17:05
↑ 64↓ 500.2%
21M
12:50/mi
3:29:55
↑ 106↓ 241.6%
35K· 21.75 mi
11:22/mi
3:38:25
↑ 17↓ 861.7%
23M
12:07/mi
3:53:35
↑ 23↓ 630.6%
24M
10:12/mi
4:03:47
↓ 821.3%
40K· 24.85 mi
10:47/mi
4:13:00
↓ 200.3%
25.2M
11:10/mi
4:16:51
↑ 13↓ 160.2%
Finish· 26.22 mi
9:44/mi
4:26:46
↑ 22↓ 21

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:57:55
Pace9:00 /mi
2nd Half
Distance13.11 mi
Time2:28:51
Pace11:21 /mi
📊Positive Split: 26.2% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:21:5026:408:3526:40
8:35
-
10K
6.21 mi11:48:1353:038:3226:23
8:30
-0:05
15K
9.32 mi12:15:371:20:278:3827:24
8:49
+0:19
20K
12.43 mi12:46:541:51:448:5931:17
10:04
+1:15
Half
13.11 mi12:53:051:57:559:006:11
9:04
-1:00
25K
15.53 mi13:19:272:24:179:1726:22
10:52
+1:48
30K
18.64 mi13:56:463:01:369:4537:19
12:01
+1:09
20M
20.00 mi14:12:153:17:059:5115:29
11:24
-0:37
21M
21.00 mi14:25:053:29:5510:0012:50
12:50
+1:26
35K
21.75 mi14:33:353:38:2510:038:30
11:22
-1:28
23M
23.00 mi14:48:453:53:3510:0915:10
12:07
+0:45
24M
24.00 mi14:58:574:03:4710:0910:12
10:12
-1:55
40K
24.85 mi15:08:104:13:0010:119:13
10:47
+0:35
25.2M
25.20 mi15:12:014:16:5110:123:51
11:10
+0:23
Finish
26.22 mi15:21:564:26:4610:119:55
9:44
-1:26

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

8:30 /mi

Average Pace

10:11 /mi

Slowest Pace

12:50 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

2:07:50

48% of race

Time at Steady Pace

1:13:37

28% of race

Time at Slower Pace

1:05:19

24% of race

Average Pace: 10:10 /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 mi11:21:5026:408:3526:40
8:35
#18142
10K
6.21 mi11:48:1353:038:3226:23
8:30
#18145
15K
9.32 mi12:15:371:20:278:3827:24
8:49
#18648
20K
12.43 mi12:46:541:51:448:5931:17
10:04
#20324
Half
13.11 mi12:53:051:57:559:006:11
9:04
#20340
25K
15.53 mi13:19:272:24:179:1726:22
10:52
#21248
30K
18.64 mi13:56:463:01:369:4537:19
12:01
#22195
20M
20.00 mi14:12:153:17:059:5115:29
11:24
#22296
21M
21.00 mi14:25:053:29:5510:0012:50
12:50
#22410
35K
21.75 mi14:33:353:38:2510:038:30
11:22
#22480
23M
23.00 mi14:48:453:53:3510:0915:10
12:07
#22602
24M
24.00 mi14:58:574:03:4710:0910:12
10:12
#22550
40K
24.85 mi15:08:104:13:0010:119:13
10:47
#22523
25.2M
25.20 mi15:12:014:16:5110:123:51
11:10
#22502
Finish
26.22 mi15:21:564:26:4610:119:55
9:44
#22449
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF40-44Seg. OverallSeg. FemalesSeg. F40-44
5K3.11 mi3.11 mi181426649664919642(Top 74%)7473(Top 65%)7473(Top 398%)
10K6.21 mi3.10 mi18145-36613+366613+3618217(Top 68%)6607(Top 58%)6607(Top 352%)
15K9.32 mi3.11 mi18648-5036913-3006913-30019642(Top 74%)7473(Top 65%)7473(Top 398%)
20K12.43 mi3.11 mi20324-16767904-9917904-99123059(Top 87%)9378(Top 82%)9378(Top 499%)
Half13.11 mi0.68 mi20340-167908-47908-420746(Top 78%)8108(Top 71%)8108(Top 432%)
25K15.53 mi2.42 mi21248-9088410-5028410-50223779(Top 89%)9834(Top 86%)9834(Top 524%)
30K18.64 mi3.11 mi22195-9478944-5348944-53424510(Top 92%)10285(Top 90%)10285(Top 548%)
20M20.00 mi1.36 mi22296-1019008-649008-6423345(Top 88%)9705(Top 85%)9705(Top 517%)
21M21.00 mi1.00 mi22410-1149095-879095-8723883(Top 90%)10024(Top 88%)10024(Top 534%)
35K21.75 mi0.75 mi22480-709133-389133-3823902(Top 90%)10076(Top 88%)10076(Top 537%)
23M23.00 mi1.25 mi22602-1229210-779210-7724150(Top 91%)10209(Top 89%)10209(Top 544%)
24M24.00 mi1.00 mi22550+529192+189192+1821348(Top 80%)8756(Top 77%)8756(Top 466%)
40K24.85 mi0.85 mi22523+279181+119181+1121909(Top 82%)9103(Top 80%)9103(Top 485%)
25.2M25.20 mi0.35 mi22502+219176+59176+520875(Top 78%)8527(Top 75%)8527(Top 454%)
Finish26.22 mi1.02 mi22449+539154+229154+2220934(Top 79%)8526(Top 75%)8526(Top 454%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 74%
×21story building
+97ft-345ft

Overall

19642

Females

7473

F40-44

7473

5K→10K

3.1 - 6.2 mi

Top 68%
×5story building
+79ft-138ft

Overall

18217

Females

6607

F40-44

6607

10K→15K

6.2 - 9.3 mi

Top 74%
×3story building
+67ft-78ft

Overall

19642

Females

7473

F40-44

7473

15K→20K

9.3 - 12.4 mi

Top 87%
×5story building
+106ft-86ft

Overall

23059

Females

9378

F40-44

9378

20K→Half

12.4 - 13.1 mi

Top 78%
×2story building
+19ft-37ft

Overall

20746

Females

8108

F40-44

8108

Half→25K

13.1 - 15.5 mi

Top 89%
×4story building
+66ft-88ft

Overall

23779

Females

9834

F40-44

9834

25K→30K

15.5 - 18.6 mi

Top 92%
×9story building
+181ft-148ft

Overall

24510

Females

10285

F40-44

10285

30K→20M

18.6 - 20.0 mi

Top 88%
×5story building
+64ft-50ft

Overall

23345

Females

9705

F40-44

9705

20M→21M

20.0 - 21.0 mi

Top 90%
×8story building
+106ft-24ft

Overall

23883

Females

10024

F40-44

10024

21M→35K

21.0 - 21.8 mi

Top 90%
×7story building
+17ft-86ft

Overall

23902

Females

10076

F40-44

10076

35K→23M

21.8 - 23.0 mi

Top 91%
×5story building
+23ft-63ft

Overall

24150

Females

10209

F40-44

10209

23M→24M

23.0 - 24.0 mi

Top 80%
×6story building
+12ft-82ft

Overall

21348

Females

8756

F40-44

8756

24M→40K

24.0 - 24.9 mi

Top 82%
×1story
+6ft-20ft

Overall

21909

Females

9103

F40-44

9103

40K→25.2M

24.9 - 25.2 mi

Top 78%
×1story
+13ft-16ft

Overall

20875

Females

8527

F40-44

8527

25.2M→Finish

25.2 - 26.2 mi

Top 79%
×2story building
+22ft-21ft

Overall

20934

Females

8526

F40-44

8526

Passing Analysis

Category:
Athletes Passed
715
Passed By
5022
Net Change
-4307
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#18142
5K → 10K304307-3#18142#18145
10K → 15K60563-503#18145#18648
15K → 20K81684-1676#18648#20324
20K → Half2642-16#20324#20340
Half → 25K7915-908#20340#21248
25K → 30K14961-947#21248#22195
30K → 20M30131-101#22195#22296
20M → 21M27141-114#22296#22410
21M → 35K1989-70#22410#22480
35K → 23M28150-122#22480#22602
23M → 24M564+52#22602#22550
24M → 40K4013+27#22550#22523
40K → 25.2M276+21#22523#22502
25.2M → Finish6916+53#22502#22449
TOTALS7155022-4307
📊

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