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BOSTON MARATHON 2023

Elizabeth Carstens

Bib: 30760•F

MA

0:00
0:00
/ mi
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Overall
#0 / 26622
Top 48%
Gender (Female)
#0 / 11423
Top 31%
Division (F18-39)
#0 / 4884
Top 49%
Race Day Weather
49°/39°F
light intensity drizzle

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
29:19
Rank: #21897
Start → 5K
29:19 | 9:26/mi
10K· 6.21 mi
55:05
Rank: #20013 (+1884)
5K → 10K
25:46 | 8:18/mi
15K· 9.32 mi
1:19:06
Rank: #17761 (+2252)
10K → 15K
24:01 | 7:44/mi
20K· 12.43 mi
1:43:10
Rank: #16292 (+1469)
15K → 20K
24:04 | 7:45/mi
Half· 13.11 mi
1:48:20
Rank: #16014 (+278)
20K → Half
5:10 | 7:34/mi
25K· 15.53 mi
2:07:09
Rank: #15250 (+764)
Half → 25K
18:49 | 7:46/mi
30K· 18.64 mi
2:31:23
Rank: #14255 (+995)
25K → 30K
24:14 | 7:48/mi
20M
2:42:08
Rank: #13884 (+371)
30K → 20M
10:45 | 7:55/mi
21M
2:50:32
Rank: #13615 (+269)
20M → 21M
8:24 | 8:24/mi
35K· 21.75 mi
2:56:35
Rank: #13563 (+52)
21M → 35K
6:03 | 8:05/mi
23M
3:06:48
Rank: #13362 (+201)
35K → 23M
10:13 | 8:10/mi
24M
3:14:29
Rank: #13149 (+213)
23M → 24M
7:41 | 7:41/mi
40K· 24.85 mi
3:21:05
Rank: #12952 (+197)
24M → 40K
6:36 | 7:43/mi
25.2M
3:23:57
Rank: #12875 (+77)
40K → 25.2M
2:52 | 8:19/mi
Finish· 26.22 mi
3:31:37
Rank: #12717 (+158)
25.2M → Finish
7:40 | 7:31/mi

The Course

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Half Splits

1st Half· via Half
Distance13.11 mi
Time1:48:20
Pace8:16 /mi
2nd Half✓ Faster
Distance13.11 mi
Time1:43:17
Pace7:53 /mi
📊Negative Split: 4.7% faster second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:52:2029:199:2629:19
9:26
-
10K
6.21 mi12:18:0655:058:5225:46
8:18
-1:08
15K
9.32 mi12:42:071:19:068:2924:01
7:44
-0:34
20K
12.43 mi13:06:111:43:108:1824:04
7:45
+0:01
Half
13.11 mi13:11:211:48:208:165:10
7:34
-0:11
25K
15.53 mi13:30:102:07:098:1118:49
7:46
+0:12
30K
18.64 mi13:54:242:31:238:0724:14
7:48
+0:02
20M
20.00 mi14:05:092:42:088:0610:45
7:55
+0:07
21M
21.00 mi14:13:332:50:328:078:24
8:24
+0:29
35K
21.75 mi14:19:362:56:358:076:03
8:05
-0:19
23M
23.00 mi14:29:493:06:488:0710:13
8:10
+0:05
24M
24.00 mi14:37:303:14:298:067:41
7:41
-0:29
40K
24.85 mi14:44:063:21:058:056:36
7:43
+0:02
25.2M
25.20 mi14:46:583:23:578:062:52
8:19
+0:36
Finish
26.22 mi14:54:383:31:378:057:40
7:31
-0:48

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

7:31 /mi

Average Pace

8:05 /mi

Slowest Pace

9:26 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

7:40

4% of race

Time at Steady Pace

2:01:20

57% of race

Time at Slower Pace

1:22:37

39% of race

Average Pace: 8:04 /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 mi11:52:2029:199:2629:19
9:26
#21897
10K
6.21 mi12:18:0655:058:5225:46
8:18
#20013
15K
9.32 mi12:42:071:19:068:2924:01
7:44
#17761
20K
12.43 mi13:06:111:43:108:1824:04
7:45
#16292
Half
13.11 mi13:11:211:48:208:165:10
7:34
#16014
25K
15.53 mi13:30:102:07:098:1118:49
7:46
#15250
30K
18.64 mi13:54:242:31:238:0724:14
7:48
#14255
20M
20.00 mi14:05:092:42:088:0610:45
7:55
#13884
21M
21.00 mi14:13:332:50:328:078:24
8:24
#13615
35K
21.75 mi14:19:362:56:358:076:03
8:05
#13563
23M
23.00 mi14:29:493:06:488:0710:13
8:10
#13362
24M
24.00 mi14:37:303:14:298:067:41
7:41
#13149
40K
24.85 mi14:44:063:21:058:056:36
7:43
#12952
25.2M
25.20 mi14:46:583:23:578:062:52
8:19
#12875
Finish
26.22 mi14:54:383:31:378:057:40
7:31
#12717
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF18-39Seg. OverallSeg. FemalesSeg. F18-39
5K3.11 mi3.11 mi218978830883012126(Top 46%)2968(Top 26%)2968(Top 61%)
10K6.21 mi3.10 mi20013+18847771+10597771+105916885(Top 63%)5798(Top 51%)5798(Top 119%)
15K9.32 mi3.11 mi17761+22526378+13936378+139312126(Top 46%)2968(Top 26%)2968(Top 61%)
20K12.43 mi3.11 mi16292+14695480+8985480+89811294(Top 42%)2574(Top 23%)2574(Top 53%)
Half13.11 mi0.68 mi16014+2785321+1595321+15910903(Top 41%)2332(Top 20%)2332(Top 48%)
25K15.53 mi2.42 mi15250+7644866+4554866+45510818(Top 41%)2403(Top 21%)2403(Top 49%)
30K18.64 mi3.11 mi14255+9954299+5674299+5679386(Top 35%)1887(Top 17%)1887(Top 39%)
20M20.00 mi1.36 mi13884+3714090+2094090+2099675(Top 36%)2110(Top 18%)2110(Top 43%)
21M21.00 mi1.00 mi13615+2693942+1483942+1489902(Top 37%)2348(Top 21%)2348(Top 48%)
35K21.75 mi0.75 mi13563+523924+183924+1812736(Top 48%)3843(Top 34%)3843(Top 79%)
23M23.00 mi1.25 mi13362+2013832+923832+9210916(Top 41%)2983(Top 26%)2983(Top 61%)
24M24.00 mi1.00 mi13149+2133738+943738+949035(Top 34%)2129(Top 19%)2129(Top 44%)
40K24.85 mi0.85 mi12952+1973646+923646+928161(Top 31%)1825(Top 16%)1825(Top 37%)
25.2M25.20 mi0.35 mi12875+773607+393607+398511(Top 32%)2062(Top 18%)2062(Top 42%)
Finish26.22 mi1.02 mi12717+1583531+763531+768766(Top 33%)2146(Top 19%)2146(Top 44%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 46%
×21stories
+97ft-345ft

Overall

12126

Females

2968

F18-39

2968

5K→10K

3.1 - 6.2 mi

Top 63%
×5stories
+79ft-138ft

Overall

16885

Females

5798

F18-39

5798

10K→15K

6.2 - 9.3 mi

Top 46%
×3stories
+67ft-78ft

Overall

12126

Females

2968

F18-39

2968

15K→20K

9.3 - 12.4 mi

Top 42%
×5stories
+106ft-86ft

Overall

11294

Females

2574

F18-39

2574

20K→Half

12.4 - 13.1 mi

Top 41%
×2stories
+19ft-37ft

Overall

10903

Females

2332

F18-39

2332

Half→25K

13.1 - 15.5 mi

Top 41%
×4stories
+66ft-88ft

Overall

10818

Females

2403

F18-39

2403

25K→30K

15.5 - 18.6 mi

Top 35%
×9stories
+181ft-148ft

Overall

9386

Females

1887

F18-39

1887

30K→20M

18.6 - 20.0 mi

Top 36%
×5stories
+64ft-50ft

Overall

9675

Females

2110

F18-39

2110

20M→21M

20.0 - 21.0 mi

Top 37%
×8stories
+106ft-24ft

Overall

9902

Females

2348

F18-39

2348

21M→35K

21.0 - 21.8 mi

Top 48%
×7stories
+17ft-86ft

Overall

12736

Females

3843

F18-39

3843

35K→23M

21.8 - 23.0 mi

Top 41%
×5stories
+23ft-63ft

Overall

10916

Females

2983

F18-39

2983

23M→24M

23.0 - 24.0 mi

Top 34%
×6stories
+12ft-82ft

Overall

9035

Females

2129

F18-39

2129

24M→40K

24.0 - 24.9 mi

Top 31%
×1story
+6ft-20ft

Overall

8161

Females

1825

F18-39

1825

40K→25.2M

24.9 - 25.2 mi

Top 32%
×1story
+13ft-16ft

Overall

8511

Females

2062

F18-39

2062

25.2M→Finish

25.2 - 26.2 mi

Top 33%
×2stories
+22ft-21ft

Overall

8766

Females

2146

F18-39

2146

Passing Analysis

Category:
Athletes Passed
9252
Passed By
72
Net Change
+9180
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#21897
5K → 10K18884+1884#21897#20013
10K → 15K22531+2252#20013#17761
15K → 20K14690+1469#17761#16292
20K → Half2780+278#16292#16014
Half → 25K7640+764#16014#15250
25K → 30K9950+995#15250#14255
30K → 20M3710+371#14255#13884
20M → 21M2734+269#13884#13615
21M → 35K8129+52#13615#13563
35K → 23M21312+201#13563#13362
23M → 24M2229+213#13362#13149
24M → 40K1981+197#13149#12952
40K → 25.2M803+77#12952#12875
25.2M → Finish1679+158#12875#12717
TOTALS925272+9180
📊

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