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BOSTON MARATHON 2023

Erin Brazzale-Negrete

Bib: 20504•F

IL

0:00
0:00
/ mi
Masters
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Overall
#0 / 26622
Gender (Female)
#0 / 11423
Masters (Masters Women)
#0 / 6539
Division (F45-49)
#0 / 1817
Race Day Weather
49°/39°F
light intensity drizzle

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
30:47
Rank: #23230
Start → 5K
30:47 | 9:54/mi
10K· 6.21 mi
1:02:32
Rank: #23764 (-534)
5K → 10K
31:45 | 10:13/mi
15K· 9.32 mi
1:33:47
Rank: #23735 (+29)
10K → 15K
31:15 | 10:04/mi
20K· 12.43 mi
2:06:25
Rank: #23770 (-35)
15K → 20K
32:38 | 10:30/mi
Half· 13.11 mi
2:13:30
Rank: #23778 (-8)
20K → Half
7:05 | 10:23/mi
25K· 15.53 mi
2:40:05
Rank: #23786 (-8)
Half → 25K
26:35 | 10:58/mi
30K· 18.64 mi
3:14:33
Rank: #23685 (+101)
25K → 30K
34:28 | 11:06/mi
20M
3:30:02
Rank: #23650 (+35)
30K → 20M
15:29 | 11:24/mi
21M
3:43:35
Rank: #23753 (-103)
20M → 21M
13:33 | 13:33/mi
35K· 21.75 mi
3:52:04
Rank: #23776 (-23)
21M → 35K
8:29 | 11:20/mi
23M
4:06:33
Rank: #23770 (+6)
35K → 23M
14:29 | 11:34/mi
24M
4:18:18
Rank: #23793 (-23)
23M → 24M
11:45 | 11:45/mi
40K· 24.85 mi
4:28:12
Rank: #23783 (+10)
24M → 40K
9:54 | 11:35/mi
25.2M
4:32:54
Rank: #23811 (-28)
40K → 25.2M
4:42 | 13:38/mi
Finish· 26.22 mi
4:44:23
Rank: #23835 (-24)
25.2M → Finish
11:29 | 11:16/mi

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time2:13:30
Pace10:11 /mi
2nd Half
Distance13.11 mi
Time2:30:53
Pace11:31 /mi
📊Positive Split: 13.0% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:25:4630:479:5430:47
9:54
-
10K
6.21 mi11:57:311:02:3210:0431:45
10:13
+0:19
15K
9.32 mi12:28:461:33:4710:0431:15
10:04
-0:09
20K
12.43 mi13:01:242:06:2510:1032:38
10:30
+0:26
Half
13.11 mi13:08:292:13:3010:117:05
10:23
-0:07
25K
15.53 mi13:35:042:40:0510:1826:35
10:58
+0:35
30K
18.64 mi14:09:323:14:3310:2634:28
11:06
+0:08
20M
20.00 mi14:25:013:30:0210:3015:29
11:24
+0:18
21M
21.00 mi14:38:343:43:3510:3913:33
13:33
+2:09
35K
21.75 mi14:47:033:52:0410:408:29
11:20
-2:13
23M
23.00 mi15:01:324:06:3310:4314:29
11:34
+0:14
24M
24.00 mi15:13:174:18:1810:4611:45
11:45
+0:11
40K
24.85 mi15:23:114:28:1210:479:54
11:35
-0:10
25.2M
25.20 mi15:27:534:32:5410:504:42
13:38
+2:03
Finish
26.22 mi15:39:224:44:2310:5111:29
11:16
-2:22

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

9:54 /mi

Average Pace

10:51 /mi

Slowest Pace

13:38 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

2:13:30

47% of race

Time at Steady Pace

2:12:38

47% of race

Time at Slower Pace

18:15

6% of race

Average Pace: 10:51 /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 mi11:25:4630:479:5430:47
9:54
#23230
10K
6.21 mi11:57:311:02:3210:0431:45
10:13
#23764
15K
9.32 mi12:28:461:33:4710:0431:15
10:04
#23735
20K
12.43 mi13:01:242:06:2510:1032:38
10:30
#23770
Half
13.11 mi13:08:292:13:3010:117:05
10:23
#23778
25K
15.53 mi13:35:042:40:0510:1826:35
10:58
#23786
30K
18.64 mi14:09:323:14:3310:2634:28
11:06
#23685
20M
20.00 mi14:25:013:30:0210:3015:29
11:24
#23650
21M
21.00 mi14:38:343:43:3510:3913:33
13:33
#23753
35K
21.75 mi14:47:033:52:0410:408:29
11:20
#23776
23M
23.00 mi15:01:324:06:3310:4314:29
11:34
#23770
24M
24.00 mi15:13:174:18:1810:4611:45
11:45
#23793
40K
24.85 mi15:23:114:28:1210:479:54
11:35
#23783
25.2M
25.20 mi15:27:534:32:5410:504:42
13:38
#23811
Finish
26.22 mi15:39:224:44:2310:5111:29
11:16
#23835
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF45-49Seg. OverallSeg. FemalesSeg. F45-49
5K3.11 mi3.11 mi232309515951523627(Top 89%)9683(Top 85%)9683(Top 533%)
10K6.21 mi3.10 mi23764-5349766-2519766-25124171(Top 91%)9980(Top 87%)9980(Top 549%)
15K9.32 mi3.11 mi23735+299744+229744+2223627(Top 89%)9683(Top 85%)9683(Top 533%)
20K12.43 mi3.11 mi23770-359762-189762-1823838(Top 90%)9813(Top 86%)9813(Top 540%)
Half13.11 mi0.68 mi23778-89766-49766-424000(Top 90%)9912(Top 87%)9912(Top 546%)
25K15.53 mi2.42 mi23786-89779-139779-1323914(Top 90%)9909(Top 87%)9909(Top 545%)
30K18.64 mi3.11 mi23685+1019741+389741+3823226(Top 87%)9584(Top 84%)9584(Top 527%)
20M20.00 mi1.36 mi23650+359739+29739+223347(Top 88%)9707(Top 85%)9707(Top 534%)
21M21.00 mi1.00 mi23753-1039803-649803-6424639(Top 93%)10421(Top 91%)10421(Top 574%)
35K21.75 mi0.75 mi23776-239818-159818-1523880(Top 90%)10068(Top 88%)10068(Top 554%)
23M23.00 mi1.25 mi23770+69828-109828-1023373(Top 88%)9789(Top 86%)9789(Top 539%)
24M24.00 mi1.00 mi23793-239847-199847-1924210(Top 91%)10280(Top 90%)10280(Top 566%)
40K24.85 mi0.85 mi23783+109849-29849-223339(Top 88%)9847(Top 86%)9847(Top 542%)
25.2M25.20 mi0.35 mi23811-289865-169865-1624659(Top 93%)10514(Top 92%)10514(Top 579%)
Finish26.22 mi1.02 mi23835-249886-219886-2124391(Top 92%)10353(Top 91%)10353(Top 570%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 89%
×21stories
+97ft-345ft

Overall

23627

Females

9683

F45-49

9683

5K→10K

3.1 - 6.2 mi

Top 91%
×5stories
+79ft-138ft

Overall

24171

Females

9980

F45-49

9980

10K→15K

6.2 - 9.3 mi

Top 89%
×3stories
+67ft-78ft

Overall

23627

Females

9683

F45-49

9683

15K→20K

9.3 - 12.4 mi

Top 90%
×5stories
+106ft-86ft

Overall

23838

Females

9813

F45-49

9813

20K→Half

12.4 - 13.1 mi

Top 90%
×2stories
+19ft-37ft

Overall

24000

Females

9912

F45-49

9912

Half→25K

13.1 - 15.5 mi

Top 90%
×4stories
+66ft-88ft

Overall

23914

Females

9909

F45-49

9909

25K→30K

15.5 - 18.6 mi

Top 87%
×9stories
+181ft-148ft

Overall

23226

Females

9584

F45-49

9584

30K→20M

18.6 - 20.0 mi

Top 88%
×5stories
+64ft-50ft

Overall

23347

Females

9707

F45-49

9707

20M→21M

20.0 - 21.0 mi

Top 93%
×8stories
+106ft-24ft

Overall

24639

Females

10421

F45-49

10421

21M→35K

21.0 - 21.8 mi

Top 90%
×7stories
+17ft-86ft

Overall

23880

Females

10068

F45-49

10068

35K→23M

21.8 - 23.0 mi

Top 88%
×5stories
+23ft-63ft

Overall

23373

Females

9789

F45-49

9789

23M→24M

23.0 - 24.0 mi

Top 91%
×6stories
+12ft-82ft

Overall

24210

Females

10280

F45-49

10280

24M→40K

24.0 - 24.9 mi

Top 88%
×1story
+6ft-20ft

Overall

23339

Females

9847

F45-49

9847

40K→25.2M

24.9 - 25.2 mi

Top 93%
×1story
+13ft-16ft

Overall

24659

Females

10514

F45-49

10514

25.2M→Finish

25.2 - 26.2 mi

Top 92%
×2stories
+22ft-21ft

Overall

24391

Females

10353

F45-49

10353

Passing Analysis

Category:
Athletes Passed
760
Passed By
1365
Net Change
-605
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#23230
5K → 10K42576-534#23230#23764
10K → 15K136107+29#23764#23735
15K → 20K96131-35#23735#23770
20K → Half2129-8#23770#23778
Half → 25K8795-8#23778#23786
25K → 30K15352+101#23786#23685
30K → 20M7540+35#23685#23650
20M → 21M17120-103#23650#23753
21M → 35K2043-23#23753#23776
35K → 23M4236+6#23776#23770
23M → 24M2346-23#23770#23793
24M → 40K3020+10#23793#23783
40K → 25.2M735-28#23783#23811
25.2M → Finish1135-24#23811#23835
TOTALS7601365-605
📊

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