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BOSTON MARATHON 2023

Emmie Costen

Bib: 7006•F

NC

0:00
0:00
/ mi
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Overall
#0 / 26622
Top 13%
Gender (Female)
#0 / 11423
Top 2%
Division (F18-39)
#0 / 4884
Top 3%
Race Day Weather
49°/39°F
light intensity drizzle

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
21:13
Rank: #4969
Start → 5K
21:13 | 6:50/mi
10K· 6.21 mi
41:58
Rank: #4550 (+419)
5K → 10K
20:45 | 6:41/mi
15K· 9.32 mi
1:02:26
Rank: #4008 (+542)
10K → 15K
20:28 | 6:35/mi
20K· 12.43 mi
1:22:45
Rank: #3526 (+482)
15K → 20K
20:19 | 6:32/mi
Half· 13.11 mi
1:27:11
Rank: #3468 (+58)
20K → Half
4:26 | 6:30/mi
25K· 15.53 mi
1:43:04
Rank: #3251 (+217)
Half → 25K
15:53 | 6:33/mi
30K· 18.64 mi
2:04:07
Rank: #3103 (+148)
25K → 30K
21:03 | 6:47/mi
20M
2:13:29
Rank: #3106 (-3)
30K → 20M
9:22 | 6:54/mi
21M
2:20:41
Rank: #3092 (+14)
20M → 21M
7:12 | 7:12/mi
35K· 21.75 mi
2:25:38
Rank: #3070 (+22)
21M → 35K
4:57 | 6:37/mi
23M
2:34:32
Rank: #3121 (-51)
35K → 23M
8:54 | 7:06/mi
24M
2:41:28
Rank: #3173 (-52)
23M → 24M
6:56 | 6:56/mi
40K· 24.85 mi
2:47:26
Rank: #3174 (-1)
24M → 40K
5:58 | 6:59/mi
25.2M
2:50:04
Rank: #3193 (-19)
40K → 25.2M
2:38 | 7:38/mi
Finish· 26.22 mi
2:57:39
Rank: #3378 (-185)
25.2M → Finish
7:35 | 7:26/mi

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:27:11
Pace6:39 /mi
2nd Half
Distance13.11 mi
Time1:30:28
Pace6:54 /mi
📊Positive Split: 3.8% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:25:1521:136:5021:13
6:50
-
10K
6.21 mi10:46:0041:586:4520:45
6:41
-0:09
15K
9.32 mi11:06:281:02:266:4220:28
6:35
-0:06
20K
12.43 mi11:26:471:22:456:4020:19
6:32
-0:03
Half
13.11 mi11:31:131:27:116:394:26
6:30
-0:02
25K
15.53 mi11:47:061:43:046:3815:53
6:33
+0:03
30K
18.64 mi12:08:092:04:076:3921:03
6:47
+0:14
20M
20.00 mi12:17:312:13:296:409:22
6:54
+0:07
21M
21.00 mi12:24:432:20:416:427:12
7:12
+0:18
35K
21.75 mi12:29:402:25:386:424:57
6:37
-0:35
23M
23.00 mi12:38:342:34:326:438:54
7:06
+0:29
24M
24.00 mi12:45:302:41:286:446:56
6:56
-0:10
40K
24.85 mi12:51:282:47:266:445:58
6:59
+0:03
25.2M
25.20 mi12:54:062:50:046:452:38
7:38
+0:39
Finish
26.22 mi13:01:412:57:396:477:35
7:26
-0:12

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

6:30 /mi

Average Pace

6:47 /mi

Slowest Pace

7:38 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

2:40:14

90% of race

Time at Steady Pace

17:25

10% of race

Time at Slower Pace

0:00

0% of race

Average Pace: 6:47 /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 mi10:25:1521:136:5021:13
6:50
#4969
10K
6.21 mi10:46:0041:586:4520:45
6:41
#4550
15K
9.32 mi11:06:281:02:266:4220:28
6:35
#4008
20K
12.43 mi11:26:471:22:456:4020:19
6:32
#3526
Half
13.11 mi11:31:131:27:116:394:26
6:30
#3468
25K
15.53 mi11:47:061:43:046:3815:53
6:33
#3251
30K
18.64 mi12:08:092:04:076:3921:03
6:47
#3103
20M
20.00 mi12:17:312:13:296:409:22
6:54
#3106
21M
21.00 mi12:24:432:20:416:427:12
7:12
#3092
35K
21.75 mi12:29:402:25:386:424:57
6:37
#3070
23M
23.00 mi12:38:342:34:326:438:54
7:06
#3121
24M
24.00 mi12:45:302:41:286:446:56
6:56
#3173
40K
24.85 mi12:51:282:47:266:445:58
6:59
#3174
25.2M
25.20 mi12:54:062:50:046:452:38
7:38
#3193
Finish
26.22 mi13:01:412:57:396:477:35
7:26
#3378
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF18-39Seg. OverallSeg. FemalesSeg. F18-39
5K3.11 mi3.11 mi49693503503215(Top 12%)155(Top 1%)155(Top 3%)
10K6.21 mi3.10 mi4550+419292+58292+584170(Top 16%)254(Top 2%)254(Top 5%)
15K9.32 mi3.11 mi4008+542231+61231+613215(Top 12%)155(Top 1%)155(Top 3%)
20K12.43 mi3.11 mi3526+482183+48183+482523(Top 9%)106(Top 0.9%)106(Top 2%)
Half13.11 mi0.68 mi3468+58180+3180+32858(Top 11%)121(Top 1%)121(Top 2%)
25K15.53 mi2.42 mi3251+217152+28152+282445(Top 9%)105(Top 0.9%)105(Top 2%)
30K18.64 mi3.11 mi3103+148146+6146+62846(Top 11%)148(Top 1%)148(Top 3%)
20M20.00 mi1.36 mi3106-3147-1147-13403(Top 13%)218(Top 2%)218(Top 4%)
21M21.00 mi1.00 mi3092+14153-6153-63137(Top 12%)195(Top 2%)195(Top 4%)
35K21.75 mi0.75 mi3070+22152+1152+13155(Top 12%)202(Top 2%)202(Top 4%)
23M23.00 mi1.25 mi3121-51158-6158-64363(Top 16%)380(Top 3%)380(Top 8%)
24M24.00 mi1.00 mi3173-52163-5163-54365(Top 16%)407(Top 4%)407(Top 8%)
40K24.85 mi0.85 mi3174-1166-3166-33757(Top 14%)361(Top 3%)361(Top 7%)
25.2M25.20 mi0.35 mi3193-19168-2168-24615(Top 17%)587(Top 5%)587(Top 12%)
Finish26.22 mi1.02 mi3378-185188-20188-208093(Top 30%)1857(Top 16%)1857(Top 38%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 12%
×21stories
+97ft-345ft

Overall

3215

Females

155

F18-39

155

5K→10K

3.1 - 6.2 mi

Top 16%
×5stories
+79ft-138ft

Overall

4170

Females

254

F18-39

254

10K→15K

6.2 - 9.3 mi

Top 12%
×3stories
+67ft-78ft

Overall

3215

Females

155

F18-39

155

15K→20K

9.3 - 12.4 mi

Top 9%
×5stories
+106ft-86ft

Overall

2523

Females

106

F18-39

106

20K→Half

12.4 - 13.1 mi

Top 11%
×2stories
+19ft-37ft

Overall

2858

Females

121

F18-39

121

Half→25K

13.1 - 15.5 mi

Top 9%
×4stories
+66ft-88ft

Overall

2445

Females

105

F18-39

105

25K→30K

15.5 - 18.6 mi

Top 11%
×9stories
+181ft-148ft

Overall

2846

Females

148

F18-39

148

30K→20M

18.6 - 20.0 mi

Top 13%
×5stories
+64ft-50ft

Overall

3403

Females

218

F18-39

218

20M→21M

20.0 - 21.0 mi

Top 12%
×8stories
+106ft-24ft

Overall

3137

Females

195

F18-39

195

21M→35K

21.0 - 21.8 mi

Top 12%
×7stories
+17ft-86ft

Overall

3155

Females

202

F18-39

202

35K→23M

21.8 - 23.0 mi

Top 16%
×5stories
+23ft-63ft

Overall

4363

Females

380

F18-39

380

23M→24M

23.0 - 24.0 mi

Top 16%
×6stories
+12ft-82ft

Overall

4365

Females

407

F18-39

407

24M→40K

24.0 - 24.9 mi

Top 14%
×1story
+6ft-20ft

Overall

3757

Females

361

F18-39

361

40K→25.2M

24.9 - 25.2 mi

Top 17%
×1story
+13ft-16ft

Overall

4615

Females

587

F18-39

587

25.2M→Finish

25.2 - 26.2 mi

Top 30%
×2stories
+22ft-21ft

Overall

8093

Females

1857

F18-39

1857

Passing Analysis

Category:
Athletes Passed
2234
Passed By
643
Net Change
+1591
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#4969
5K → 10K47859+419#4969#4550
10K → 15K5497+542#4550#4008
15K → 20K4831+482#4008#3526
20K → Half602+58#3526#3468
Half → 25K2181+217#3468#3251
25K → 30K18032+148#3251#3103
30K → 20M4245-3#3103#3106
20M → 21M5238+14#3106#3092
21M → 35K3816+22#3092#3070
35K → 23M3889-51#3070#3121
23M → 24M2981-52#3121#3173
24M → 40K3940-1#3173#3174
40K → 25.2M1736-19#3174#3193
25.2M → Finish11196-185#3193#3378
TOTALS2234643+1591
📊

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