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BOSTON MARATHON 2023

Erika Kemp

Bib: 133•F

MA

0:00
0:00
/ mi
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Overall
#0 / 26622
Top 1%
Gender (Female)
#0 / 11423
Top 0.2%
Division (F18-39)
#0 / 4884
Top 0.6%
Race Day Weather
49°/39°F
light intensity drizzle

⏱️ Race Timeline

Watch your race unfold from start to finish

Start
0:00:00
Race begins
5K· 3.11 mi
17:54
Rank: #348
Start → 5K
17:54 | 5:46/mi
10K· 6.21 mi
35:26
Rank: #306 (+42)
5K → 10K
17:32 | 5:39/mi
15K· 9.32 mi
53:15
Rank: #301 (+5)
10K → 15K
17:49 | 5:44/mi
20K· 12.43 mi
1:11:14
Rank: #303 (-2)
15K → 20K
17:59 | 5:47/mi
Half· 13.11 mi
1:15:09
Rank: #301 (+2)
20K → Half
3:55 | 5:44/mi
25K· 15.53 mi
1:29:10
Rank: #292 (+9)
Half → 25K
14:01 | 5:47/mi
30K· 18.64 mi
1:47:34
Rank: #278 (+14)
25K → 30K
18:24 | 5:55/mi
20M
1:55:42
Rank: #281 (-3)
30K → 20M
8:08 | 5:59/mi
21M
2:02:02
Rank: #278 (+3)
20M → 21M
6:20 | 6:20/mi
35K· 21.75 mi
2:06:21
Rank: #274 (+4)
21M → 35K
4:19 | 5:46/mi
23M
2:13:58
Rank: #270 (+4)
35K → 23M
7:37 | 6:05/mi
24M
2:20:00
Rank: #273 (-3)
23M → 24M
6:02 | 6:02/mi
40K· 24.85 mi
2:25:15
Rank: #267 (+6)
24M → 40K
5:15 | 6:08/mi
25.2M
2:27:36
Rank: #268 (-1)
40K → 25.2M
2:21 | 6:49/mi
Finish· 26.22 mi
2:33:57
Rank: #274 (-6)
25.2M → Finish
6:21 | 6:14/mi

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:15:09
Pace5:44 /mi
2nd Half
Distance13.11 mi
Time1:18:48
Pace6:01 /mi
📊Positive Split: 4.9% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:04:5417:545:4617:54
5:46
-
10K
6.21 mi10:22:2635:265:4217:32
5:39
-0:07
15K
9.32 mi10:40:1553:155:4317:49
5:44
+0:05
20K
12.43 mi10:58:141:11:145:4417:59
5:47
+0:03
Half
13.11 mi11:02:091:15:095:443:55
5:44
-0:03
25K
15.53 mi11:16:101:29:105:4414:01
5:47
+0:03
30K
18.64 mi11:34:341:47:345:4618:24
5:55
+0:08
20M
20.00 mi11:42:421:55:425:478:08
5:59
+0:04
21M
21.00 mi11:49:022:02:025:496:20
6:20
+0:21
35K
21.75 mi11:53:212:06:215:494:19
5:46
-0:34
23M
23.00 mi12:00:582:13:585:497:37
6:05
+0:19
24M
24.00 mi12:07:002:20:005:506:02
6:02
-0:03
40K
24.85 mi12:12:152:25:155:515:15
6:08
+0:06
25.2M
25.20 mi12:14:362:27:365:512:21
6:49
+0:41
Finish
26.22 mi12:20:572:33:575:536:21
6:14
-0:35

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

5:39 /mi

Average Pace

5:53 /mi

Slowest Pace

6:49 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Bar length shows time spent in each segment. Colors mark your faster to slower segments, relative to your own pace.

Time at Faster Pace

1:01:29

40% of race

Time at Steady Pace

1:04:34

42% of race

Time at Slower Pace

27:54

18% of race

Average Pace: 5:52 /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

Enhanced split table showing pace trends through mini sparkline visualizations.

Overall Pace Trend

CheckpointDistanceTime of DayTimeAvg PaceSegmentPaceTrendRank
5K
3.11 mi10:04:5417:545:4617:54
5:46
#348
10K
6.21 mi10:22:2635:265:4217:32
5:39
#306
15K
9.32 mi10:40:1553:155:4317:49
5:44
#301
20K
12.43 mi10:58:141:11:145:4417:59
5:47
#303
Half
13.11 mi11:02:091:15:095:443:55
5:44
#301
25K
15.53 mi11:16:101:29:105:4414:01
5:47
#292
30K
18.64 mi11:34:341:47:345:4618:24
5:55
#278
20M
20.00 mi11:42:421:55:425:478:08
5:59
#281
21M
21.00 mi11:49:022:02:025:496:20
6:20
#278
35K
21.75 mi11:53:212:06:215:494:19
5:46
#274
23M
23.00 mi12:00:582:13:585:497:37
6:05
#270
24M
24.00 mi12:07:002:20:005:506:02
6:02
#273
40K
24.85 mi12:12:152:25:155:515:15
6:08
#267
25.2M
25.20 mi12:14:362:27:365:512:21
6:49
#268
Finish
26.22 mi12:20:572:33:575:536:21
6:14
#274
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF18-39Seg. OverallSeg. FemalesSeg. F18-39
5K3.11 mi3.11 mi3483333299(Top 1%)33(Top 0.3%)33(Top 0.7%)
10K6.21 mi3.10 mi306+4230+330+3244(Top 0.9%)30(Top 0.3%)30(Top 0.6%)
15K9.32 mi3.11 mi301+531-131-1299(Top 1%)33(Top 0.3%)33(Top 0.7%)
20K12.43 mi3.11 mi303-232-132-1295(Top 1%)29(Top 0.3%)29(Top 0.6%)
Half13.11 mi0.68 mi301+23232329(Top 1%)27(Top 0.2%)27(Top 0.6%)
25K15.53 mi2.42 mi292+931+131+1253(Top 1.0%)26(Top 0.2%)26(Top 0.5%)
30K18.64 mi3.11 mi278+143131292(Top 1%)25(Top 0.2%)25(Top 0.5%)
20M20.00 mi1.36 mi281-330+130+1336(Top 1%)26(Top 0.2%)26(Top 0.5%)
21M21.00 mi1.00 mi278+328+228+2396(Top 1%)32(Top 0.3%)32(Top 0.7%)
35K21.75 mi0.75 mi274+42828335(Top 1%)28(Top 0.2%)28(Top 0.6%)
23M23.00 mi1.25 mi270+427+127+1446(Top 2%)30(Top 0.3%)30(Top 0.6%)
24M24.00 mi1.00 mi273-328-128-1628(Top 2%)34(Top 0.3%)34(Top 0.7%)
40K24.85 mi0.85 mi267+62828570(Top 2%)33(Top 0.3%)33(Top 0.7%)
25.2M25.20 mi0.35 mi268-128281250(Top 5%)62(Top 0.5%)62(Top 1%)
Finish26.22 mi1.02 mi274-628281404(Top 5%)75(Top 0.7%)75(Top 2%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 1%
×21stories
+97ft-345ft

Overall

299

Females

33

F18-39

33

5K→10K

3.1 - 6.2 mi

Top 0.9%
×5stories
+79ft-138ft

Overall

244

Females

30

F18-39

30

10K→15K

6.2 - 9.3 mi

Top 1%
×3stories
+67ft-78ft

Overall

299

Females

33

F18-39

33

15K→20K

9.3 - 12.4 mi

Top 1%
×5stories
+106ft-86ft

Overall

295

Females

29

F18-39

29

20K→Half

12.4 - 13.1 mi

Top 1%
×2stories
+19ft-37ft

Overall

329

Females

27

F18-39

27

Half→25K

13.1 - 15.5 mi

Top 1.0%
×4stories
+66ft-88ft

Overall

253

Females

26

F18-39

26

25K→30K

15.5 - 18.6 mi

Top 1%
×9stories
+181ft-148ft

Overall

292

Females

25

F18-39

25

30K→20M

18.6 - 20.0 mi

Top 1%
×5stories
+64ft-50ft

Overall

336

Females

26

F18-39

26

20M→21M

20.0 - 21.0 mi

Top 1%
×8stories
+106ft-24ft

Overall

396

Females

32

F18-39

32

21M→35K

21.0 - 21.8 mi

Top 1%
×7stories
+17ft-86ft

Overall

335

Females

28

F18-39

28

35K→23M

21.8 - 23.0 mi

Top 2%
×5stories
+23ft-63ft

Overall

446

Females

30

F18-39

30

23M→24M

23.0 - 24.0 mi

Top 2%
×6stories
+12ft-82ft

Overall

628

Females

34

F18-39

34

24M→40K

24.0 - 24.9 mi

Top 2%
×1story
+6ft-20ft

Overall

570

Females

33

F18-39

33

40K→25.2M

24.9 - 25.2 mi

Top 5%
×1story
+13ft-16ft

Overall

1250

Females

62

F18-39

62

25.2M→Finish

25.2 - 26.2 mi

Top 5%
×2stories
+22ft-21ft

Overall

1404

Females

75

F18-39

75

Passing Analysis

Category:
Athletes Passed
141
Passed By
67
Net Change
+74
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#348
5K → 10K431+42#348#306
10K → 15K116+5#306#301
15K → 20K810-2#301#303
20K → Half53+2#303#301
Half → 25K112+9#301#292
25K → 30K162+14#292#278
30K → 20M47-3#278#281
20M → 21M85+3#281#278
21M → 35K51+4#278#274
35K → 23M95+4#274#270
23M → 24M58-3#270#273
24M → 40K93+6#273#267
40K → 25.2M34-1#267#268
25.2M → Finish410-6#268#274
TOTALS14167+74
📊

Passing Visuals

Category:

📈Position Graph

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🎨Heatmap Timeline

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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