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BOSTON MARATHON 2023

Erin Delaney

Bib: 19518•F

OH

0:00
0:00
/ mi
Masters
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Overall
#0 / 26622
Gender (Female)
#0 / 11423
Masters (Masters Women)
#0 / 6539
Division (F40-44)
#0 / 1878
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
8:49/mi
27:25
↑ 97↓ 3451.5%
10K· 6.21 mi
8:39/mi
54:18
↑ 79↓ 1380.4%
15K· 9.32 mi
8:45/mi
1:21:28
↑ 67↓ 78
20K· 12.43 mi
9:09/mi
1:49:53
↑ 106↓ 860.1%
Half· 13.11 mi
8:43/mi
1:55:50
↑ 19↓ 370.5%
25K· 15.53 mi
8:59/mi
2:17:37
↑ 66↓ 880.2%
30K· 18.64 mi
9:39/mi
2:47:36
↑ 181↓ 1480.2%
20M
9:06/mi
2:59:58
↑ 64↓ 500.2%
21M
10:00/mi
3:09:58
↑ 106↓ 241.6%
35K· 21.75 mi
8:33/mi
3:16:22
↑ 17↓ 861.7%
23M
9:35/mi
3:28:22
↑ 23↓ 630.6%
24M
9:01/mi
3:37:23
↓ 821.3%
40K· 24.85 mi
9:12/mi
3:45:15
↓ 200.3%
25.2M
10:29/mi
3:48:52
↑ 13↓ 160.2%
Finish· 26.22 mi
8:45/mi
3:57:47
↑ 22↓ 21

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:55:50
Pace8:50 /mi
2nd Half
Distance13.11 mi
Time2:01:57
Pace9:18 /mi
📊Positive Split: 5.3% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:24:1327:258:4927:25
8:49
-
10K
6.21 mi11:51:0654:188:4426:53
8:39
-0:10
15K
9.32 mi12:18:161:21:288:4427:10
8:45
+0:06
20K
12.43 mi12:46:411:49:538:5128:25
9:09
+0:24
Half
13.11 mi12:52:381:55:508:505:57
8:43
-0:26
25K
15.53 mi13:14:252:17:378:5221:47
8:59
+0:16
30K
18.64 mi13:44:242:47:368:5929:59
9:39
+0:40
20M
20.00 mi13:56:462:59:589:0012:22
9:06
-0:33
21M
21.00 mi14:06:463:09:589:0310:00
10:00
+0:54
35K
21.75 mi14:13:103:16:229:026:24
8:33
-1:27
23M
23.00 mi14:25:103:28:229:0412:00
9:35
+1:02
24M
24.00 mi14:34:113:37:239:039:01
9:01
-0:34
40K
24.85 mi14:42:033:45:159:047:52
9:12
+0:11
25.2M
25.20 mi14:45:403:48:529:053:37
10:29
+1:17
Finish
26.22 mi14:54:353:57:479:058:55
8:45
-1:44

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

8:33 /mi

Average Pace

9:05 /mi

Slowest Pace

10:29 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

1:15:19

32% of race

Time at Steady Pace

1:46:52

45% of race

Time at Slower Pace

55:36

23% of race

Average Pace: 9:04 /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 mi11:24:1327:258:4927:25
8:49
#19601
10K
6.21 mi11:51:0654:188:4426:53
8:39
#19350
15K
9.32 mi12:18:161:21:288:4427:10
8:45
#19274
20K
12.43 mi12:46:411:49:538:5128:25
9:09
#19546
Half
13.11 mi12:52:381:55:508:505:57
8:43
#19524
25K
15.53 mi13:14:252:17:378:5221:47
8:59
#19403
30K
18.64 mi13:44:242:47:368:5929:59
9:39
#19553
20M
20.00 mi13:56:462:59:589:0012:22
9:06
#19359
21M
21.00 mi14:06:463:09:589:0310:00
10:00
#19268
35K
21.75 mi14:13:103:16:229:026:24
8:33
#19150
23M
23.00 mi14:25:103:28:229:0412:00
9:35
#19129
24M
24.00 mi14:34:113:37:239:039:01
9:01
#19042
40K
24.85 mi14:42:033:45:159:047:52
9:12
#18974
25.2M
25.20 mi14:45:403:48:529:053:37
10:29
#18970
Finish
26.22 mi14:54:353:57:479:058:55
8:45
#18904
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF40-44Seg. OverallSeg. FemalesSeg. F40-44
5K3.11 mi3.11 mi196017577757719209(Top 72%)7221(Top 63%)7221(Top 385%)
10K6.21 mi3.10 mi19350+2517369+2087369+20819154(Top 72%)7175(Top 63%)7175(Top 382%)
15K9.32 mi3.11 mi19274+767300+697300+6919209(Top 72%)7221(Top 63%)7221(Top 385%)
20K12.43 mi3.11 mi19546-2727452-1527452-15220351(Top 76%)7872(Top 69%)7872(Top 419%)
Half13.11 mi0.68 mi19524+227443+97443+919105(Top 72%)7147(Top 63%)7147(Top 381%)
25K15.53 mi2.42 mi19403+1217359+847359+8418881(Top 71%)7064(Top 62%)7064(Top 376%)
30K18.64 mi3.11 mi19553-1507460-1017460-10119973(Top 75%)7750(Top 68%)7750(Top 413%)
20M20.00 mi1.36 mi19359+1947361+997361+9917098(Top 64%)6228(Top 55%)6228(Top 332%)
21M21.00 mi1.00 mi19268+917323+387323+3818047(Top 68%)6795(Top 59%)6795(Top 362%)
35K21.75 mi0.75 mi19150+1187262+617262+6115660(Top 59%)5519(Top 48%)5519(Top 294%)
23M23.00 mi1.25 mi19129+217259+37259+318682(Top 70%)7230(Top 63%)7230(Top 385%)
24M24.00 mi1.00 mi19042+877223+367223+3617341(Top 65%)6547(Top 57%)6547(Top 349%)
40K24.85 mi0.85 mi18974+687184+397184+3917122(Top 64%)6476(Top 57%)6476(Top 345%)
25.2M25.20 mi0.35 mi18970+47189-57189-519090(Top 72%)7551(Top 66%)7551(Top 402%)
Finish26.22 mi1.02 mi18904+667154+357154+3516802(Top 63%)6265(Top 55%)6265(Top 334%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 72%
×21story building
+97ft-345ft

Overall

19209

Females

7221

F40-44

7221

5K→10K

3.1 - 6.2 mi

Top 72%
×5story building
+79ft-138ft

Overall

19154

Females

7175

F40-44

7175

10K→15K

6.2 - 9.3 mi

Top 72%
×3story building
+67ft-78ft

Overall

19209

Females

7221

F40-44

7221

15K→20K

9.3 - 12.4 mi

Top 76%
×5story building
+106ft-86ft

Overall

20351

Females

7872

F40-44

7872

20K→Half

12.4 - 13.1 mi

Top 72%
×2story building
+19ft-37ft

Overall

19105

Females

7147

F40-44

7147

Half→25K

13.1 - 15.5 mi

Top 71%
×4story building
+66ft-88ft

Overall

18881

Females

7064

F40-44

7064

25K→30K

15.5 - 18.6 mi

Top 75%
×9story building
+181ft-148ft

Overall

19973

Females

7750

F40-44

7750

30K→20M

18.6 - 20.0 mi

Top 64%
×5story building
+64ft-50ft

Overall

17098

Females

6228

F40-44

6228

20M→21M

20.0 - 21.0 mi

Top 68%
×8story building
+106ft-24ft

Overall

18047

Females

6795

F40-44

6795

21M→35K

21.0 - 21.8 mi

Top 59%
×7story building
+17ft-86ft

Overall

15660

Females

5519

F40-44

5519

35K→23M

21.8 - 23.0 mi

Top 70%
×5story building
+23ft-63ft

Overall

18682

Females

7230

F40-44

7230

23M→24M

23.0 - 24.0 mi

Top 65%
×6story building
+12ft-82ft

Overall

17341

Females

6547

F40-44

6547

24M→40K

24.0 - 24.9 mi

Top 64%
×1story
+6ft-20ft

Overall

17122

Females

6476

F40-44

6476

40K→25.2M

24.9 - 25.2 mi

Top 72%
×1story
+13ft-16ft

Overall

19090

Females

7551

F40-44

7551

25.2M→Finish

25.2 - 26.2 mi

Top 63%
×2story building
+22ft-21ft

Overall

16802

Females

6265

F40-44

6265

Passing Analysis

Category:
Athletes Passed
1966
Passed By
1269
Net Change
+697
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#19601
5K → 10K479228+251#19601#19350
10K → 15K225149+76#19350#19274
15K → 20K86358-272#19274#19546
20K → Half3917+22#19546#19524
Half → 25K18362+121#19524#19403
25K → 30K117267-150#19403#19553
30K → 20M20410+194#19553#19359
20M → 21M12433+91#19359#19268
21M → 35K1213+118#19268#19150
35K → 23M8463+21#19150#19129
23M → 24M10922+87#19129#19042
24M → 40K8315+68#19042#18974
40K → 25.2M2824+4#18974#18970
25.2M → Finish8418+66#18970#18904
TOTALS19661269+697
📊

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