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BOSTON MARATHON 2023

Nancy Neff

Bib: 22804•F

FL

0:00
0:00
/ mi
Masters
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Overall
#0 / 26622
Gender (Female)
#0 / 11423
Masters (Masters Women)
#0 / 6539
Division (F50-54)
#0 / 1207
Race Day Weather
49°/39°F
light intensity drizzle

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
27:20
Rank: #19461
Start → 5K
27:20 | 8:48/mi
10K· 6.21 mi
55:23
Rank: #20279 (-818)
5K → 10K
28:03 | 9:02/mi
15K· 9.32 mi
1:24:04
Rank: #20658 (-379)
10K → 15K
28:41 | 9:14/mi
20K· 12.43 mi
1:53:49
Rank: #21032 (-374)
15K → 20K
29:45 | 9:35/mi
Half· 13.11 mi
2:00:21
Rank: #21117 (-85)
20K → Half
6:32 | 9:35/mi
25K· 15.53 mi
2:24:14
Rank: #21235 (-118)
Half → 25K
23:53 | 9:51/mi
30K· 18.64 mi
2:57:16
Rank: #21511 (-276)
25K → 30K
33:02 | 10:38/mi
20M
3:12:41
Rank: #21690 (-179)
30K → 20M
15:25 | 11:21/mi
21M
3:25:35
Rank: #21903 (-213)
20M → 21M
12:54 | 12:54/mi
35K· 21.75 mi
3:33:50
Rank: #21978 (-75)
21M → 35K
8:15 | 11:02/mi
23M
3:48:34
Rank: #22097 (-119)
35K → 23M
14:44 | 11:46/mi
24M
3:59:37
Rank: #22134 (-37)
23M → 24M
11:03 | 11:03/mi
40K· 24.85 mi
4:09:20
Rank: #22189 (-55)
24M → 40K
9:43 | 11:22/mi
25.2M
4:13:44
Rank: #22226 (-37)
40K → 25.2M
4:24 | 12:46/mi
Finish· 26.22 mi
4:25:12
Rank: #22321 (-95)
25.2M → Finish
11:28 | 11:15/mi

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time2:00:21
Pace9:11 /mi
2nd Half
Distance13.11 mi
Time2:24:51
Pace11:03 /mi
📊Positive Split: 20.4% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:21:3527:208:4827:20
8:48
-
10K
6.21 mi11:49:3855:238:5528:03
9:02
+0:14
15K
9.32 mi12:18:191:24:049:0128:41
9:14
+0:12
20K
12.43 mi12:48:041:53:499:1029:45
9:35
+0:21
Half
13.11 mi12:54:362:00:219:116:32
9:35
0:00
25K
15.53 mi13:18:292:24:149:1723:53
9:51
+0:16
30K
18.64 mi13:51:312:57:169:3133:02
10:38
+0:47
20M
20.00 mi14:06:563:12:419:3815:25
11:21
+0:43
21M
21.00 mi14:19:503:25:359:4712:54
12:54
+1:33
35K
21.75 mi14:28:053:33:509:508:15
11:02
-1:52
23M
23.00 mi14:42:493:48:349:5614:44
11:46
+0:44
24M
24.00 mi14:53:523:59:379:5911:03
11:03
-0:43
40K
24.85 mi15:03:354:09:2010:029:43
11:22
+0:19
25.2M
25.20 mi15:07:594:13:4410:044:24
12:46
+1:24
Finish
26.22 mi15:19:274:25:1210:0711:28
11:15
-1:31

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

8:48 /mi

Average Pace

10:07 /mi

Slowest Pace

12:54 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

2:24:14

54% of race

Time at Steady Pace

1:28:56

34% of race

Time at Slower Pace

32:02

12% of race

Average Pace: 10:07 /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 mi11:21:3527:208:4827:20
8:48
#19461
10K
6.21 mi11:49:3855:238:5528:03
9:02
#20279
15K
9.32 mi12:18:191:24:049:0128:41
9:14
#20658
20K
12.43 mi12:48:041:53:499:1029:45
9:35
#21032
Half
13.11 mi12:54:362:00:219:116:32
9:35
#21117
25K
15.53 mi13:18:292:24:149:1723:53
9:51
#21235
30K
18.64 mi13:51:312:57:169:3133:02
10:38
#21511
20M
20.00 mi14:06:563:12:419:3815:25
11:21
#21690
21M
21.00 mi14:19:503:25:359:4712:54
12:54
#21903
35K
21.75 mi14:28:053:33:509:508:15
11:02
#21978
23M
23.00 mi14:42:493:48:349:5614:44
11:46
#22097
24M
24.00 mi14:53:523:59:379:5911:03
11:03
#22134
40K
24.85 mi15:03:354:09:2010:029:43
11:22
#22189
25.2M
25.20 mi15:07:594:13:4410:044:24
12:46
#22226
Finish
26.22 mi15:19:274:25:1210:0711:28
11:15
#22321
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF50-54Seg. OverallSeg. FemalesSeg. F50-54
5K3.11 mi3.11 mi194617490749021420(Top 80%)8461(Top 74%)8461(Top 701%)
10K6.21 mi3.10 mi20279-8187908-4187908-41821005(Top 79%)8269(Top 72%)8269(Top 685%)
15K9.32 mi3.11 mi20658-3798101-1938101-19321420(Top 80%)8461(Top 74%)8461(Top 701%)
20K12.43 mi3.11 mi21032-3748298-1978298-19721791(Top 82%)8675(Top 76%)8675(Top 719%)
Half13.11 mi0.68 mi21117-858333-358333-3522342(Top 84%)8977(Top 79%)8977(Top 744%)
25K15.53 mi2.42 mi21235-1188401-688401-6821866(Top 82%)8765(Top 77%)8765(Top 726%)
30K18.64 mi3.11 mi21511-2768562-1618562-16122478(Top 84%)9170(Top 80%)9170(Top 760%)
20M20.00 mi1.36 mi21690-1798674-1128674-11223258(Top 87%)9656(Top 85%)9656(Top 800%)
21M21.00 mi1.00 mi21903-2138801-1278801-12723978(Top 90%)10070(Top 88%)10070(Top 834%)
35K21.75 mi0.75 mi21978-758845-448845-4423358(Top 88%)9792(Top 86%)9792(Top 811%)
23M23.00 mi1.25 mi22097-1198928-838928-8323668(Top 89%)9937(Top 87%)9937(Top 823%)
24M24.00 mi1.00 mi22134-378958-308958-3023142(Top 87%)9709(Top 85%)9709(Top 804%)
40K24.85 mi0.85 mi22189-558991-338991-3323013(Top 86%)9666(Top 85%)9666(Top 801%)
25.2M25.20 mi0.35 mi22226-379012-219012-2123667(Top 89%)10013(Top 88%)10013(Top 830%)
Finish26.22 mi1.02 mi22321-959077-659077-6524367(Top 92%)10339(Top 91%)10339(Top 857%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 80%
×21stories
+97ft-345ft

Overall

21420

Females

8461

F50-54

8461

5K→10K

3.1 - 6.2 mi

Top 79%
×5stories
+79ft-138ft

Overall

21005

Females

8269

F50-54

8269

10K→15K

6.2 - 9.3 mi

Top 80%
×3stories
+67ft-78ft

Overall

21420

Females

8461

F50-54

8461

15K→20K

9.3 - 12.4 mi

Top 82%
×5stories
+106ft-86ft

Overall

21791

Females

8675

F50-54

8675

20K→Half

12.4 - 13.1 mi

Top 84%
×2stories
+19ft-37ft

Overall

22342

Females

8977

F50-54

8977

Half→25K

13.1 - 15.5 mi

Top 82%
×4stories
+66ft-88ft

Overall

21866

Females

8765

F50-54

8765

25K→30K

15.5 - 18.6 mi

Top 84%
×9stories
+181ft-148ft

Overall

22478

Females

9170

F50-54

9170

30K→20M

18.6 - 20.0 mi

Top 87%
×5stories
+64ft-50ft

Overall

23258

Females

9656

F50-54

9656

20M→21M

20.0 - 21.0 mi

Top 90%
×8stories
+106ft-24ft

Overall

23978

Females

10070

F50-54

10070

21M→35K

21.0 - 21.8 mi

Top 88%
×7stories
+17ft-86ft

Overall

23358

Females

9792

F50-54

9792

35K→23M

21.8 - 23.0 mi

Top 89%
×5stories
+23ft-63ft

Overall

23668

Females

9937

F50-54

9937

23M→24M

23.0 - 24.0 mi

Top 87%
×6stories
+12ft-82ft

Overall

23142

Females

9709

F50-54

9709

24M→40K

24.0 - 24.9 mi

Top 86%
×1story
+6ft-20ft

Overall

23013

Females

9666

F50-54

9666

40K→25.2M

24.9 - 25.2 mi

Top 89%
×1story
+13ft-16ft

Overall

23667

Females

10013

F50-54

10013

25.2M→Finish

25.2 - 26.2 mi

Top 92%
×2stories
+22ft-21ft

Overall

24367

Females

10339

F50-54

10339

Passing Analysis

Category:
Athletes Passed
471
Passed By
3331
Net Change
-2860
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#19461
5K → 10K68886-818#19461#20279
10K → 15K79458-379#20279#20658
15K → 20K62436-374#20658#21032
20K → Half1095-85#21032#21117
Half → 25K65183-118#21117#21235
25K → 30K57333-276#21235#21511
30K → 20M23202-179#21511#21690
20M → 21M15228-213#21690#21903
21M → 35K1085-75#21903#21978
35K → 23M21140-119#21978#22097
23M → 24M2764-37#22097#22134
24M → 40K2176-55#22134#22189
40K → 25.2M643-37#22189#22226
25.2M → Finish7102-95#22226#22321
TOTALS4713331-2860
📊

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