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BOSTON MARATHON 2023

Corrine Johnson

Bib: 13929•F

UT

0:00
0:00
/ mi
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Overall
#0 / 26622
Top 37%
Gender (Female)
#0 / 11423
Top 17%
Division (F18-39)
#0 / 4884
Top 31%
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
7:37/mi
23:39
↑ 97↓ 3451.5%
10K· 6.21 mi
7:23/mi
46:34
↑ 79↓ 1380.4%
15K· 9.32 mi
7:20/mi
1:09:20
↑ 67↓ 78
20K· 12.43 mi
7:30/mi
1:32:39
↑ 106↓ 860.1%
Half· 13.11 mi
7:24/mi
1:37:42
↑ 19↓ 370.5%
25K· 15.53 mi
7:46/mi
1:56:31
↑ 66↓ 880.2%
30K· 18.64 mi
8:04/mi
2:21:35
↑ 181↓ 1480.2%
20M
8:07/mi
2:32:37
↑ 64↓ 500.2%
21M
8:53/mi
2:41:30
↑ 106↓ 241.6%
35K· 21.75 mi
7:42/mi
2:47:16
↑ 17↓ 861.7%
23M
7:56/mi
2:57:12
↑ 23↓ 630.6%
24M
7:44/mi
3:04:56
↓ 821.3%
40K· 24.85 mi
7:58/mi
3:11:45
↓ 200.3%
25.2M
8:25/mi
3:14:39
↑ 13↓ 160.2%
Finish· 26.22 mi
7:20/mi
3:22:07
↑ 22↓ 21

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:37:42
Pace7:27 /mi
2nd Half
Distance13.11 mi
Time1:44:25
Pace7:58 /mi
📊Positive Split: 6.9% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:52:2823:397:3723:39
7:37
-
10K
6.21 mi11:15:2346:347:3022:55
7:23
-0:14
15K
9.32 mi11:38:091:09:207:2622:46
7:20
-0:03
20K
12.43 mi12:01:281:32:397:2723:19
7:30
+0:10
Half
13.11 mi12:06:311:37:427:275:03
7:24
-0:06
25K
15.53 mi12:25:201:56:317:3018:49
7:46
+0:22
30K
18.64 mi12:50:242:21:357:3625:04
8:04
+0:18
20M
20.00 mi13:01:262:32:377:3811:02
8:07
+0:03
21M
21.00 mi13:10:192:41:307:418:53
8:53
+0:46
35K
21.75 mi13:16:052:47:167:415:46
7:42
-1:11
23M
23.00 mi13:26:012:57:127:429:56
7:56
+0:14
24M
24.00 mi13:33:453:04:567:427:44
7:44
-0:12
40K
24.85 mi13:40:343:11:457:436:49
7:58
+0:14
25.2M
25.20 mi13:43:283:14:397:432:54
8:25
+0:27
Finish
26.22 mi13:50:563:22:077:437:28
7:20
-1:05

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

7:20 /mi

Average Pace

7:43 /mi

Slowest Pace

8:53 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

1:21:31

40% of race

Time at Steady Pace

1:05:54

33% of race

Time at Slower Pace

54:42

27% of race

Average Pace: 7:43 /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 mi10:52:2823:397:3723:39
7:37
#10657
10K
6.21 mi11:15:2346:347:3022:55
7:23
#9981
15K
9.32 mi11:38:091:09:207:2622:46
7:20
#9519
20K
12.43 mi12:01:281:32:397:2723:19
7:30
#9453
Half
13.11 mi12:06:311:37:427:275:03
7:24
#9447
25K
15.53 mi12:25:201:56:317:3018:49
7:46
#9661
30K
18.64 mi12:50:242:21:357:3625:04
8:04
#9935
20M
20.00 mi13:01:262:32:377:3811:02
8:07
#9986
21M
21.00 mi13:10:192:41:307:418:53
8:53
#10143
35K
21.75 mi13:16:052:47:167:415:46
7:42
#10127
23M
23.00 mi13:26:012:57:127:429:56
7:56
#10037
24M
24.00 mi13:33:453:04:567:427:44
7:44
#9992
40K
24.85 mi13:40:343:11:457:436:49
7:58
#9958
25.2M
25.20 mi13:43:283:14:397:432:54
8:25
#9915
Finish
26.22 mi13:50:563:22:077:437:28
7:20
#9765
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF18-39Seg. OverallSeg. FemalesSeg. F18-39
5K3.11 mi3.11 mi10657216321638807(Top 33%)1372(Top 12%)1372(Top 28%)
10K6.21 mi3.10 mi9981+6761834+3291834+3299437(Top 35%)1603(Top 14%)1603(Top 33%)
15K9.32 mi3.11 mi9519+4621625+2091625+2098807(Top 33%)1372(Top 12%)1372(Top 28%)
20K12.43 mi3.11 mi9453+661614+111614+119365(Top 35%)1632(Top 14%)1632(Top 33%)
Half13.11 mi0.68 mi9447+61610+41610+49505(Top 36%)1685(Top 15%)1685(Top 35%)
25K15.53 mi2.42 mi9661-2141709-991709-9910797(Top 41%)2382(Top 21%)2382(Top 49%)
30K18.64 mi3.11 mi9935-2741865-1561865-15611427(Top 43%)2859(Top 25%)2859(Top 59%)
20M20.00 mi1.36 mi9986-511912-471912-4711162(Top 42%)2803(Top 25%)2803(Top 57%)
21M21.00 mi1.00 mi10143-1572014-1022014-10212757(Top 48%)3808(Top 33%)3808(Top 78%)
35K21.75 mi0.75 mi10127+162023-92023-910013(Top 38%)2351(Top 21%)2351(Top 48%)
23M23.00 mi1.25 mi10037+902010+132010+139319(Top 35%)2179(Top 19%)2179(Top 45%)
24M24.00 mi1.00 mi9992+452031-212031-219324(Top 35%)2254(Top 20%)2254(Top 46%)
40K24.85 mi0.85 mi9958+342041-102041-109890(Top 37%)2588(Top 23%)2588(Top 53%)
25.2M25.20 mi0.35 mi9915+432035+62035+69025(Top 34%)2251(Top 20%)2251(Top 46%)
Finish26.22 mi1.02 mi9765+1501990+451990+457340(Top 28%)1564(Top 14%)1564(Top 32%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 33%
×21story building
+97ft-345ft

Overall

8807

Females

1372

F18-39

1372

5K→10K

3.1 - 6.2 mi

Top 35%
×5story building
+79ft-138ft

Overall

9437

Females

1603

F18-39

1603

10K→15K

6.2 - 9.3 mi

Top 33%
×3story building
+67ft-78ft

Overall

8807

Females

1372

F18-39

1372

15K→20K

9.3 - 12.4 mi

Top 35%
×5story building
+106ft-86ft

Overall

9365

Females

1632

F18-39

1632

20K→Half

12.4 - 13.1 mi

Top 36%
×2story building
+19ft-37ft

Overall

9505

Females

1685

F18-39

1685

Half→25K

13.1 - 15.5 mi

Top 41%
×4story building
+66ft-88ft

Overall

10797

Females

2382

F18-39

2382

25K→30K

15.5 - 18.6 mi

Top 43%
×9story building
+181ft-148ft

Overall

11427

Females

2859

F18-39

2859

30K→20M

18.6 - 20.0 mi

Top 42%
×5story building
+64ft-50ft

Overall

11162

Females

2803

F18-39

2803

20M→21M

20.0 - 21.0 mi

Top 48%
×8story building
+106ft-24ft

Overall

12757

Females

3808

F18-39

3808

21M→35K

21.0 - 21.8 mi

Top 38%
×7story building
+17ft-86ft

Overall

10013

Females

2351

F18-39

2351

35K→23M

21.8 - 23.0 mi

Top 35%
×5story building
+23ft-63ft

Overall

9319

Females

2179

F18-39

2179

23M→24M

23.0 - 24.0 mi

Top 35%
×6story building
+12ft-82ft

Overall

9324

Females

2254

F18-39

2254

24M→40K

24.0 - 24.9 mi

Top 37%
×1story
+6ft-20ft

Overall

9890

Females

2588

F18-39

2588

40K→25.2M

24.9 - 25.2 mi

Top 34%
×1story
+13ft-16ft

Overall

9025

Females

2251

F18-39

2251

25.2M→Finish

25.2 - 26.2 mi

Top 28%
×2story building
+22ft-21ft

Overall

7340

Females

1564

F18-39

1564

Passing Analysis

Category:
Athletes Passed
2284*
Passed By
1390
Net Change
+892
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#10657
5K → 10K757*81+676#10657#9981
10K → 15K49331+462#9981#9519
15K → 20K170104+66#9519#9453
20K → Half2418+6#9453#9447
Half → 25K67281-214#9447#9661
25K → 30K85*359-274#9661#9935
30K → 20M78129-51#9935#9986
20M → 21M44199-157#9986#10143
21M → 35K4731+16#10143#10127
35K → 23M128*38+90#10127#10037
23M → 24M9449+45#10037#9992
24M → 40K7844+34#9992#9958
40K → 25.2M5613+43#9958#9915
25.2M → Finish163*13+150#9915#9765
TOTALS2284*1390+892

* Includes athletes who did not complete a segment (DNF/DNQ).

📊

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