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BOSTON MARATHON 2023

Amber Dunford

Bib: 7174•F

UT

0:00
0:00
/ mi
Masters
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Overall
#0 / 26622
Gender (Female)
#0 / 11423
Top 48%
Masters (Masters Women)
#0 / 6539
Top 37%
Division (F40-44)
#0 / 1878
Race Day Weather
49°/39°F
light intensity drizzle

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
23:11
Rank: #9333
Start → 5K
23:11 | 7:28/mi
10K· 6.21 mi
46:47
Rank: #10312 (-979)
5K → 10K
23:36 | 7:36/mi
15K· 9.32 mi
1:10:59
Rank: #11077 (-765)
10K → 15K
24:12 | 7:47/mi
20K· 12.43 mi
1:36:42
Rank: #12230 (-1153)
15K → 20K
25:43 | 8:17/mi
Half· 13.11 mi
1:42:16
Rank: #12425 (-195)
20K → Half
5:34 | 8:10/mi
25K· 15.53 mi
2:04:43
Rank: #14083 (-1658)
Half → 25K
22:27 | 9:16/mi
30K· 18.64 mi
2:33:14
Rank: #14953 (-870)
25K → 30K
28:31 | 9:11/mi
20M
2:46:17
Rank: #15327 (-374)
30K → 20M
13:03 | 9:36/mi
21M
2:57:32
Rank: #15891 (-564)
20M → 21M
11:15 | 11:15/mi
35K· 21.75 mi
3:04:03
Rank: #15884 (+7)
21M → 35K
6:31 | 8:43/mi
23M
3:15:41
Rank: #16009 (-125)
35K → 23M
11:38 | 9:17/mi
24M
3:24:13
Rank: #15943 (+66)
23M → 24M
8:32 | 8:32/mi
40K· 24.85 mi
3:31:41
Rank: #15871 (+72)
24M → 40K
7:28 | 8:44/mi
25.2M
3:34:54
Rank: #15839 (+32)
40K → 25.2M
3:13 | 9:20/mi
Finish· 26.22 mi
3:43:54
Rank: #15904 (-65)
25.2M → Finish
9:00 | 8:50/mi

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:42:16
Pace7:48 /mi
2nd Half
Distance13.11 mi
Time2:01:38
Pace9:17 /mi
📊Positive Split: 18.9% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:28:4423:117:2823:11
7:28
-
10K
6.21 mi10:52:2046:477:3223:36
7:36
+0:08
15K
9.32 mi11:16:321:10:597:3724:12
7:47
+0:11
20K
12.43 mi11:42:151:36:427:4725:43
8:17
+0:30
Half
13.11 mi11:47:491:42:167:485:34
8:10
-0:07
25K
15.53 mi12:10:162:04:438:0222:27
9:16
+1:06
30K
18.64 mi12:38:472:33:148:1328:31
9:11
-0:05
20M
20.00 mi12:51:502:46:178:1913:03
9:36
+0:25
21M
21.00 mi13:03:052:57:328:2711:15
11:15
+1:39
35K
21.75 mi13:09:363:04:038:286:31
8:43
-2:32
23M
23.00 mi13:21:143:15:418:3011:38
9:17
+0:34
24M
24.00 mi13:29:463:24:138:318:32
8:32
-0:45
40K
24.85 mi13:37:143:31:418:317:28
8:44
+0:12
25.2M
25.20 mi13:40:273:34:548:323:13
9:20
+0:36
Finish
26.22 mi13:49:273:43:548:339:00
8:50
-0:30

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

7:28 /mi

Average Pace

8:33 /mi

Slowest Pace

11:15 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

1:16:33

34% of race

Time at Steady Pace

1:25:45

38% of race

Time at Slower Pace

1:01:36

28% of race

Average Pace: 8:32 /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 mi10:28:4423:117:2823:11
7:28
#9333
10K
6.21 mi10:52:2046:477:3223:36
7:36
#10312
15K
9.32 mi11:16:321:10:597:3724:12
7:47
#11077
20K
12.43 mi11:42:151:36:427:4725:43
8:17
#12230
Half
13.11 mi11:47:491:42:167:485:34
8:10
#12425
25K
15.53 mi12:10:162:04:438:0222:27
9:16
#14083
30K
18.64 mi12:38:472:33:148:1328:31
9:11
#14953
20M
20.00 mi12:51:502:46:178:1913:03
9:36
#15327
21M
21.00 mi13:03:052:57:328:2711:15
11:15
#15891
35K
21.75 mi13:09:363:04:038:286:31
8:43
#15884
23M
23.00 mi13:21:143:15:418:3011:38
9:17
#16009
24M
24.00 mi13:29:463:24:138:318:32
8:32
#15943
40K
24.85 mi13:37:143:31:418:317:28
8:44
#15871
25.2M
25.20 mi13:40:273:34:548:323:13
9:20
#15839
Finish
26.22 mi13:49:273:43:548:339:00
8:50
#15904
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF40-44Seg. OverallSeg. FemalesSeg. F40-44
5K3.11 mi3.11 mi93331553155312667(Top 48%)3278(Top 29%)3278(Top 175%)
10K6.21 mi3.10 mi10312-9791980-4271980-42711325(Top 43%)2515(Top 22%)2515(Top 134%)
15K9.32 mi3.11 mi11077-7652377-3972377-39712667(Top 48%)3278(Top 29%)3278(Top 175%)
20K12.43 mi3.11 mi12230-11533052-6753052-67515482(Top 58%)5021(Top 44%)5021(Top 267%)
Half13.11 mi0.68 mi12425-1953165-1133165-11315568(Top 58%)5040(Top 44%)5040(Top 268%)
25K15.53 mi2.42 mi14083-16584161-9964161-99620053(Top 75%)7721(Top 68%)7721(Top 411%)
30K18.64 mi3.11 mi14953-8704716-5554716-55518070(Top 68%)6689(Top 59%)6689(Top 356%)
20M20.00 mi1.36 mi15327-3744981-2654981-26519236(Top 72%)7414(Top 65%)7414(Top 395%)
21M21.00 mi1.00 mi15891-5645349-3685349-36821371(Top 80%)8662(Top 76%)8662(Top 461%)
35K21.75 mi0.75 mi15884+75363-145363-1416482(Top 62%)5981(Top 52%)5981(Top 318%)
23M23.00 mi1.25 mi16009-1255465-1025465-10217481(Top 66%)6553(Top 57%)6553(Top 349%)
24M24.00 mi1.00 mi15943+665439+265439+2614704(Top 55%)5072(Top 44%)5072(Top 270%)
40K24.85 mi0.85 mi15871+725406+335406+3314745(Top 55%)5158(Top 45%)5158(Top 275%)
25.2M25.20 mi0.35 mi15839+325388+185388+1814399(Top 54%)4969(Top 43%)4969(Top 265%)
Finish26.22 mi1.02 mi15904-655432-445432-4417215(Top 65%)6492(Top 57%)6492(Top 346%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 48%
×21stories
+97ft-345ft

Overall

12667

Females

3278

F40-44

3278

5K→10K

3.1 - 6.2 mi

Top 43%
×5stories
+79ft-138ft

Overall

11325

Females

2515

F40-44

2515

10K→15K

6.2 - 9.3 mi

Top 48%
×3stories
+67ft-78ft

Overall

12667

Females

3278

F40-44

3278

15K→20K

9.3 - 12.4 mi

Top 58%
×5stories
+106ft-86ft

Overall

15482

Females

5021

F40-44

5021

20K→Half

12.4 - 13.1 mi

Top 58%
×2stories
+19ft-37ft

Overall

15568

Females

5040

F40-44

5040

Half→25K

13.1 - 15.5 mi

Top 75%
×4stories
+66ft-88ft

Overall

20053

Females

7721

F40-44

7721

25K→30K

15.5 - 18.6 mi

Top 68%
×9stories
+181ft-148ft

Overall

18070

Females

6689

F40-44

6689

30K→20M

18.6 - 20.0 mi

Top 72%
×5stories
+64ft-50ft

Overall

19236

Females

7414

F40-44

7414

20M→21M

20.0 - 21.0 mi

Top 80%
×8stories
+106ft-24ft

Overall

21371

Females

8662

F40-44

8662

21M→35K

21.0 - 21.8 mi

Top 62%
×7stories
+17ft-86ft

Overall

16482

Females

5981

F40-44

5981

35K→23M

21.8 - 23.0 mi

Top 66%
×5stories
+23ft-63ft

Overall

17481

Females

6553

F40-44

6553

23M→24M

23.0 - 24.0 mi

Top 55%
×6stories
+12ft-82ft

Overall

14704

Females

5072

F40-44

5072

24M→40K

24.0 - 24.9 mi

Top 55%
×1story
+6ft-20ft

Overall

14745

Females

5158

F40-44

5158

40K→25.2M

24.9 - 25.2 mi

Top 54%
×1story
+13ft-16ft

Overall

14399

Females

4969

F40-44

4969

25.2M→Finish

25.2 - 26.2 mi

Top 65%
×2stories
+22ft-21ft

Overall

17215

Females

6492

F40-44

6492

Passing Analysis

Category:
Athletes Passed
558
Passed By
7128
Net Change
-6571
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#9333
5K → 10K531031-979#9333#10312
10K → 15K33798-765#10312#11077
15K → 20K181171-1153#11077#12230
20K → Half3198-195#12230#12425
Half → 25K61664-1658#12425#14083
25K → 30K36906-870#14083#14953
30K → 20M23397-374#14953#15327
20M → 21M10574-564#15327#15891
21M → 35K5447+7#15891#15884
35K → 23M47172-125#15884#16009
23M → 24M10741+66#16009#15943
24M → 40K9422+72#15943#15871
40K → 25.2M408+32#15871#15839
25.2M → Finish3499-65#15839#15904
TOTALS5587128-6571
📊

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