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BOSTON MARATHON 2023

Rebecca Johnson

Bib: 9958•F

PA

0:00
0:00
/ mi
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Overall
#0 / 26622
Top 21%
Gender (Female)
#0 / 11423
Top 5%
Division (F18-39)
#0 / 4884
Top 9%
Race Day Weather
49°/39°F
light intensity drizzle

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
21:21
Rank: #5347
Start → 5K
6:52/mi
21:21 split
10K· 6.21 mi
42:29
Rank: #5297 (+50)
5K → 10K
6:48/mi
21:08 split
15K· 9.32 mi
1:03:49
Rank: #5451 (-154)
10K → 15K
6:52/mi
21:20 split
20K· 12.43 mi
1:25:45
Rank: #5715 (-264)
15K → 20K
7:04/mi
21:56 split
Half· 13.11 mi
1:30:29
Rank: #5734 (-19)
20K → Half
6:56/mi
4:44 split
25K· 15.53 mi
1:47:53
Rank: #5876 (-142)
Half → 25K
7:11/mi
17:24 split
30K· 18.64 mi
2:10:42
Rank: #5884 (-8)
25K → 30K
7:21/mi
22:49 split
20M
2:20:49
Rank: #5899 (-15)
30K → 20M
7:27/mi
10:07 split
21M
2:28:35
Rank: #5854 (+45)
20M → 21M
7:46/mi
7:46 split
35K· 21.75 mi
2:33:54
Rank: #5833 (+21)
21M → 35K
7:06/mi
5:19 split
23M
2:43:09
Rank: #5783 (+50)
35K → 23M
7:23/mi
9:15 split
24M
2:50:28
Rank: #5755 (+28)
23M → 24M
7:19/mi
7:19 split
40K· 24.85 mi
2:56:43
Rank: #5703 (+52)
24M → 40K
7:19/mi
6:15 split
25.2M
2:59:27
Rank: #5686 (+17)
40K → 25.2M
7:56/mi
2:44 split
Finish· 26.22 mi
3:06:44
Rank: #5636 (+50)
25.2M → Finish
7:09/mi
7:17 split

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:30:29
Pace6:54 /mi
2nd Half
Distance13.11 mi
Time1:36:15
Pace7:21 /mi
📊Positive Split: 6.4% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:47:1421:216:5221:21
6:52
-
10K
6.21 mi11:08:2242:296:5021:08
6:48
-0:04
15K
9.32 mi11:29:421:03:496:5121:20
6:52
+0:04
20K
12.43 mi11:51:381:25:456:5421:56
7:04
+0:12
Half
13.11 mi11:56:221:30:296:544:44
6:56
-0:08
25K
15.53 mi12:13:461:47:536:5717:24
7:11
+0:15
30K
18.64 mi12:36:352:10:427:0122:49
7:21
+0:10
20M
20.00 mi12:46:422:20:497:0210:07
7:27
+0:06
21M
21.00 mi12:54:282:28:357:057:46
7:46
+0:19
35K
21.75 mi12:59:472:33:547:055:19
7:06
-0:40
23M
23.00 mi13:09:022:43:097:069:15
7:23
+0:17
24M
24.00 mi13:16:212:50:287:067:19
7:19
-0:04
40K
24.85 mi13:22:362:56:437:076:15
7:19
0:00
25.2M
25.20 mi13:25:202:59:277:072:44
7:56
+0:37
Finish
26.22 mi13:32:373:06:447:087:17
7:09
-0:47

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

6:48 /mi

Average Pace

7:08 /mi

Slowest Pace

7:56 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

2:56:14

94% of race

Time at Steady Pace

10:30

6% of race

Time at Slower Pace

0:00

0% of race

Average Pace: 7:07 /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 mi10:47:1421:216:5221:21
6:52
#5347
10K
6.21 mi11:08:2242:296:5021:08
6:48
#5297
15K
9.32 mi11:29:421:03:496:5121:20
6:52
#5451
20K
12.43 mi11:51:381:25:456:5421:56
7:04
#5715
Half
13.11 mi11:56:221:30:296:544:44
6:56
#5734
25K
15.53 mi12:13:461:47:536:5717:24
7:11
#5876
30K
18.64 mi12:36:352:10:427:0122:49
7:21
#5884
20M
20.00 mi12:46:422:20:497:0210:07
7:27
#5899
21M
21.00 mi12:54:282:28:357:057:46
7:46
#5854
35K
21.75 mi12:59:472:33:547:055:19
7:06
#5833
23M
23.00 mi13:09:022:43:097:069:15
7:23
#5783
24M
24.00 mi13:16:212:50:287:067:19
7:19
#5755
40K
24.85 mi13:22:362:56:437:076:15
7:19
#5703
25.2M
25.20 mi13:25:202:59:277:072:44
7:56
#5686
Finish
26.22 mi13:32:373:06:447:087:17
7:09
#5636
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF18-39Seg. OverallSeg. FemalesSeg. F18-39
5K3.11 mi3.11 mi53474014015728(Top 22%)470(Top 4%)470(Top 10%)
10K6.21 mi3.10 mi5297+50392+9392+95349(Top 20%)405(Top 4%)405(Top 8%)
15K9.32 mi3.11 mi5451-154409-17409-175728(Top 22%)470(Top 4%)470(Top 10%)
20K12.43 mi3.11 mi5715-264453-44453-446348(Top 24%)605(Top 5%)605(Top 12%)
Half13.11 mi0.68 mi5734-19459-6459-66259(Top 24%)559(Top 5%)559(Top 11%)
25K15.53 mi2.42 mi5876-142488-29488-296547(Top 25%)706(Top 6%)706(Top 14%)
30K18.64 mi3.11 mi5884-8503-15503-156287(Top 24%)703(Top 6%)703(Top 14%)
20M20.00 mi1.36 mi5899-15514-11514-116453(Top 24%)830(Top 7%)830(Top 17%)
21M21.00 mi1.00 mi5854+45521-7521-76019(Top 23%)803(Top 7%)803(Top 16%)
35K21.75 mi0.75 mi5833+215215215979(Top 22%)749(Top 7%)749(Top 15%)
23M23.00 mi1.25 mi5783+50525-4525-45805(Top 22%)746(Top 7%)746(Top 15%)
24M24.00 mi1.00 mi5755+28526-1526-16507(Top 24%)1068(Top 9%)1068(Top 22%)
40K24.85 mi0.85 mi5703+52528-2528-25538(Top 21%)814(Top 7%)814(Top 17%)
25.2M25.20 mi0.35 mi5686+17531-3531-36128(Top 23%)1078(Top 9%)1078(Top 22%)
Finish26.22 mi1.02 mi5636+505315316111(Top 23%)1093(Top 10%)1093(Top 22%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 22%
×21story building
+97ft-345ft

Overall

5728

Females

470

F18-39

470

5K→10K

3.1 - 6.2 mi

Top 20%
×5story building
+79ft-138ft

Overall

5349

Females

405

F18-39

405

10K→15K

6.2 - 9.3 mi

Top 22%
×3story building
+67ft-78ft

Overall

5728

Females

470

F18-39

470

15K→20K

9.3 - 12.4 mi

Top 24%
×5story building
+106ft-86ft

Overall

6348

Females

605

F18-39

605

20K→Half

12.4 - 13.1 mi

Top 24%
×2story building
+19ft-37ft

Overall

6259

Females

559

F18-39

559

Half→25K

13.1 - 15.5 mi

Top 25%
×4story building
+66ft-88ft

Overall

6547

Females

706

F18-39

706

25K→30K

15.5 - 18.6 mi

Top 24%
×9story building
+181ft-148ft

Overall

6287

Females

703

F18-39

703

30K→20M

18.6 - 20.0 mi

Top 24%
×5story building
+64ft-50ft

Overall

6453

Females

830

F18-39

830

20M→21M

20.0 - 21.0 mi

Top 23%
×8story building
+106ft-24ft

Overall

6019

Females

803

F18-39

803

21M→35K

21.0 - 21.8 mi

Top 22%
×7story building
+17ft-86ft

Overall

5979

Females

749

F18-39

749

35K→23M

21.8 - 23.0 mi

Top 22%
×5story building
+23ft-63ft

Overall

5805

Females

746

F18-39

746

23M→24M

23.0 - 24.0 mi

Top 24%
×6story building
+12ft-82ft

Overall

6507

Females

1068

F18-39

1068

24M→40K

24.0 - 24.9 mi

Top 21%
×1story
+6ft-20ft

Overall

5538

Females

814

F18-39

814

40K→25.2M

24.9 - 25.2 mi

Top 23%
×1story
+13ft-16ft

Overall

6128

Females

1078

F18-39

1078

25.2M→Finish

25.2 - 26.2 mi

Top 23%
×2story building
+22ft-21ft

Overall

6111

Females

1093

F18-39

1093

Passing Analysis

Category:
Athletes Passed
1010
Passed By
1299
Net Change
-289
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#5347
5K → 10K232182+50#5347#5297
10K → 15K66220-154#5297#5451
15K → 20K42306-264#5451#5715
20K → Half1231-19#5715#5734
Half → 25K33175-142#5734#5876
25K → 30K123131-8#5876#5884
30K → 20M5368-15#5884#5899
20M → 21M7833+45#5899#5854
21M → 35K4120+21#5854#5833
35K → 23M8333+50#5833#5783
23M → 24M6032+28#5783#5755
24M → 40K7624+52#5755#5703
40K → 25.2M269+17#5703#5686
25.2M → Finish8535+50#5686#5636
TOTALS10101299-289
📊

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