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BOSTON MARATHON 2023

Brielle Johnson

Bib: 26729•F

MA

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
27:07
Rank: #19073
Start → 5K
27:07 | 8:44/mi
10K· 6.21 mi
54:03
Rank: #19106 (-33)
5K → 10K
26:56 | 8:40/mi
15K· 9.32 mi
1:21:37
Rank: #19379 (-273)
10K → 15K
27:34 | 8:52/mi
20K· 12.43 mi
1:49:31
Rank: #19387 (-8)
15K → 20K
27:54 | 8:59/mi
Half· 13.11 mi
1:55:43
Rank: #19475 (-88)
20K → Half
6:12 | 9:05/mi
25K· 15.53 mi
2:18:35
Rank: #19729 (-254)
Half → 25K
22:52 | 9:26/mi
30K· 18.64 mi
2:48:45
Rank: #19836 (-107)
25K → 30K
30:10 | 9:43/mi
20M
3:02:31
Rank: #19941 (-105)
30K → 20M
13:46 | 10:08/mi
21M
3:13:51
Rank: #20086 (-145)
20M → 21M
11:20 | 11:20/mi
35K· 21.75 mi
3:20:52
Rank: #20052 (+34)
21M → 35K
7:01 | 9:23/mi
23M
3:33:24
Rank: #20049 (+3)
35K → 23M
12:32 | 10:01/mi
24M
3:42:59
Rank: #20047 (+2)
23M → 24M
9:35 | 9:35/mi
40K· 24.85 mi
3:52:29
Rank: #20167 (-120)
24M → 40K
9:30 | 11:07/mi
25.2M
3:56:39
Rank: #20208 (-41)
40K → 25.2M
4:10 | 12:05/mi
Finish· 26.22 mi
4:07:13
Rank: #20294 (-86)
25.2M → Finish
10:34 | 10:22/mi

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:55:43
Pace8:50 /mi
2nd Half
Distance13.11 mi
Time2:11:30
Pace10:02 /mi
📊Positive Split: 13.6% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:43:2227:078:4427:07
8:44
-
10K
6.21 mi12:10:1854:038:4226:56
8:40
-0:04
15K
9.32 mi12:37:521:21:378:4527:34
8:52
+0:12
20K
12.43 mi13:05:461:49:318:4927:54
8:59
+0:07
Half
13.11 mi13:11:581:55:438:506:12
9:05
+0:06
25K
15.53 mi13:34:502:18:358:5522:52
9:26
+0:21
30K
18.64 mi14:05:002:48:459:0330:10
9:43
+0:17
20M
20.00 mi14:18:463:02:319:0813:46
10:08
+0:25
21M
21.00 mi14:30:063:13:519:1411:20
11:20
+1:12
35K
21.75 mi14:37:073:20:529:147:01
9:23
-1:57
23M
23.00 mi14:49:393:33:249:1712:32
10:01
+0:38
24M
24.00 mi14:59:143:42:599:179:35
9:35
-0:26
40K
24.85 mi15:08:443:52:299:219:30
11:07
+1:32
25.2M
25.20 mi15:12:543:56:399:234:10
12:05
+0:58
Finish
26.22 mi15:23:284:07:139:2610:34
10:22
-1:43

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

8:40 /mi

Average Pace

9:26 /mi

Slowest Pace

12:05 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

1:55:43

47% of race

Time at Steady Pace

1:22:10

33% of race

Time at Slower Pace

49:20

20% of race

Average Pace: 9:26 /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 mi11:43:2227:078:4427:07
8:44
#19073
10K
6.21 mi12:10:1854:038:4226:56
8:40
#19106
15K
9.32 mi12:37:521:21:378:4527:34
8:52
#19379
20K
12.43 mi13:05:461:49:318:4927:54
8:59
#19387
Half
13.11 mi13:11:581:55:438:506:12
9:05
#19475
25K
15.53 mi13:34:502:18:358:5522:52
9:26
#19729
30K
18.64 mi14:05:002:48:459:0330:10
9:43
#19836
20M
20.00 mi14:18:463:02:319:0813:46
10:08
#19941
21M
21.00 mi14:30:063:13:519:1411:20
11:20
#20086
35K
21.75 mi14:37:073:20:529:147:01
9:23
#20052
23M
23.00 mi14:49:393:33:249:1712:32
10:01
#20049
24M
24.00 mi14:59:143:42:599:179:35
9:35
#20047
40K
24.85 mi15:08:443:52:299:219:30
11:07
#20167
25.2M
25.20 mi15:12:543:56:399:234:10
12:05
#20208
Finish
26.22 mi15:23:284:07:139:2610:34
10:22
#20294
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF18-39Seg. OverallSeg. FemalesSeg. F18-39
5K3.11 mi3.11 mi190737247724719925(Top 75%)7642(Top 67%)7642(Top 156%)
10K6.21 mi3.10 mi19106-337220+277220+2719259(Top 72%)7241(Top 63%)7241(Top 148%)
15K9.32 mi3.11 mi19379-2737376-1567376-15619925(Top 75%)7642(Top 67%)7642(Top 156%)
20K12.43 mi3.11 mi19387-87365+117365+1119610(Top 74%)7445(Top 65%)7445(Top 152%)
Half13.11 mi0.68 mi19475-887417-527417-5220810(Top 78%)8134(Top 71%)8134(Top 167%)
25K15.53 mi2.42 mi19729-2547560-1437560-14320619(Top 77%)8061(Top 71%)8061(Top 165%)
30K18.64 mi3.11 mi19836-1077637-777637-7720178(Top 76%)7875(Top 69%)7875(Top 161%)
20M20.00 mi1.36 mi19941-1057707-707707-7020828(Top 78%)8315(Top 73%)8315(Top 170%)
21M21.00 mi1.00 mi20086-1457800-937800-9321561(Top 81%)8764(Top 77%)8764(Top 179%)
35K21.75 mi0.75 mi20052+347787+137787+1319482(Top 73%)7655(Top 67%)7655(Top 157%)
23M23.00 mi1.25 mi20049+37799-127799-1220024(Top 75%)7969(Top 70%)7969(Top 163%)
24M24.00 mi1.00 mi20047+27802-37802-319514(Top 73%)7724(Top 68%)7724(Top 158%)
40K24.85 mi0.85 mi20167-1207880-787880-7822580(Top 85%)9435(Top 83%)9435(Top 193%)
25.2M25.20 mi0.35 mi20208-417911-317911-3122655(Top 85%)9473(Top 83%)9473(Top 194%)
Finish26.22 mi1.02 mi20294-867968-577968-5722732(Top 85%)9517(Top 83%)9517(Top 195%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 75%
×21stories
+97ft-345ft

Overall

19925

Females

7642

F18-39

7642

5K→10K

3.1 - 6.2 mi

Top 72%
×5stories
+79ft-138ft

Overall

19259

Females

7241

F18-39

7241

10K→15K

6.2 - 9.3 mi

Top 75%
×3stories
+67ft-78ft

Overall

19925

Females

7642

F18-39

7642

15K→20K

9.3 - 12.4 mi

Top 74%
×5stories
+106ft-86ft

Overall

19610

Females

7445

F18-39

7445

20K→Half

12.4 - 13.1 mi

Top 78%
×2stories
+19ft-37ft

Overall

20810

Females

8134

F18-39

8134

Half→25K

13.1 - 15.5 mi

Top 77%
×4stories
+66ft-88ft

Overall

20619

Females

8061

F18-39

8061

25K→30K

15.5 - 18.6 mi

Top 76%
×9stories
+181ft-148ft

Overall

20178

Females

7875

F18-39

7875

30K→20M

18.6 - 20.0 mi

Top 78%
×5stories
+64ft-50ft

Overall

20828

Females

8315

F18-39

8315

20M→21M

20.0 - 21.0 mi

Top 81%
×8stories
+106ft-24ft

Overall

21561

Females

8764

F18-39

8764

21M→35K

21.0 - 21.8 mi

Top 73%
×7stories
+17ft-86ft

Overall

19482

Females

7655

F18-39

7655

35K→23M

21.8 - 23.0 mi

Top 75%
×5stories
+23ft-63ft

Overall

20024

Females

7969

F18-39

7969

23M→24M

23.0 - 24.0 mi

Top 73%
×6stories
+12ft-82ft

Overall

19514

Females

7724

F18-39

7724

24M→40K

24.0 - 24.9 mi

Top 85%
×1story
+6ft-20ft

Overall

22580

Females

9435

F18-39

9435

40K→25.2M

24.9 - 25.2 mi

Top 85%
×1story
+13ft-16ft

Overall

22655

Females

9473

F18-39

9473

25.2M→Finish

25.2 - 26.2 mi

Top 85%
×2stories
+22ft-21ft

Overall

22732

Females

9517

F18-39

9517

Passing Analysis

Category:
Athletes Passed
1074
Passed By
2295
Net Change
-1221
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#19073
5K → 10K329362-33#19073#19106
10K → 15K85358-273#19106#19379
15K → 20K154162-8#19379#19387
20K → Half1199-88#19387#19475
Half → 25K53307-254#19475#19729
25K → 30K133240-107#19729#19836
30K → 20M48153-105#19836#19941
20M → 21M37182-145#19941#20086
21M → 35K6228+34#20086#20052
35K → 23M8178+3#20052#20049
23M → 24M4341+2#20049#20047
24M → 40K16136-120#20047#20167
40K → 25.2M445-41#20167#20208
25.2M → Finish18104-86#20208#20294
TOTALS10742295-1221
📊

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