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BOSTON MARATHON 2023

Brenda Iafrate

Bib: 30500•F

MA

0:00
0:00
/ mi
Masters
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Overall
#0 / 26622
Gender (Female)
#0 / 11423
Masters (Masters Women)
#0 / 6539
Division (F55-59)
#0 / 815
Race Day Weather
49°/39°F
light intensity drizzle

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
35:16
Rank: #26090
Start → 5K
35:16 | 11:21/mi
10K· 6.21 mi
1:13:33
Rank: #26316 (-226)
5K → 10K
38:17 | 12:19/mi
15K· 9.32 mi
1:53:18
Rank: #26374 (-58)
10K → 15K
39:45 | 12:48/mi
20K· 12.43 mi
2:37:58
Rank: #26485 (-111)
15K → 20K
44:40 | 14:23/mi
Half· 13.11 mi
2:46:43
Rank: #26482 (+3)
20K → Half
8:45 | 12:49/mi
25K· 15.53 mi
3:20:23
Rank: #26467 (+15)
Half → 25K
33:40 | 13:53/mi
30K· 18.64 mi
4:07:17
Rank: #26498 (-31)
25K → 30K
46:54 | 15:06/mi
20M
4:29:11
Rank: #26521 (-23)
30K → 20M
21:54 | 16:07/mi
21M
4:44:30
Rank: #26516 (+5)
20M → 21M
15:19 | 15:19/mi
35K· 21.75 mi
4:54:27
Rank: #26505 (+11)
21M → 35K
9:57 | 13:18/mi
23M
5:12:23
Rank: #26499 (+6)
35K → 23M
17:56 | 14:19/mi
24M
5:26:07
Rank: #26491 (+8)
23M → 24M
13:44 | 13:44/mi
40K· 24.85 mi
5:38:34
Rank: #26481 (+10)
24M → 40K
12:27 | 14:34/mi
25.2M
5:44:02
Rank: #26483 (-2)
40K → 25.2M
5:28 | 15:51/mi
Finish· 26.22 mi
5:57:49
Rank: #26480 (+3)
25.2M → Finish
13:47 | 13:32/mi

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time2:46:43
Pace12:43 /mi
2nd Half
Distance13.11 mi
Time3:11:06
Pace14:35 /mi
📊Positive Split: 14.6% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:56:4535:1611:2135:16
11:21
-
10K
6.21 mi12:35:021:13:3311:5038:17
12:19
+0:58
15K
9.32 mi13:14:471:53:1812:0939:45
12:48
+0:29
20K
12.43 mi13:59:272:37:5812:4344:40
14:23
+1:35
Half
13.11 mi14:08:122:46:4312:438:45
12:49
-1:34
25K
15.53 mi14:41:523:20:2312:5433:40
13:53
+1:04
30K
18.64 mi15:28:464:07:1713:1646:54
15:06
+1:13
20M
20.00 mi15:50:404:29:1113:2821:54
16:07
+1:01
21M
21.00 mi16:05:594:44:3013:3315:19
15:19
-0:48
35K
21.75 mi16:15:564:54:2713:329:57
13:18
-2:01
23M
23.00 mi16:33:525:12:2313:3517:56
14:19
+1:01
24M
24.00 mi16:47:365:26:0713:3513:44
13:44
-0:35
40K
24.85 mi17:00:035:38:3413:3712:27
14:34
+0:50
25.2M
25.20 mi17:05:315:44:0213:395:28
15:51
+1:17
Finish
26.22 mi17:19:185:57:4913:3913:47
13:32
-2:19

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

11:21 /mi

Average Pace

13:39 /mi

Slowest Pace

16:07 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

2:02:03

34% of race

Time at Steady Pace

2:13:44

37% of race

Time at Slower Pace

1:42:02

29% of race

Average Pace: 13:39 /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 mi11:56:4535:1611:2135:16
11:21
#26090
10K
6.21 mi12:35:021:13:3311:5038:17
12:19
#26316
15K
9.32 mi13:14:471:53:1812:0939:45
12:48
#26374
20K
12.43 mi13:59:272:37:5812:4344:40
14:23
#26485
Half
13.11 mi14:08:122:46:4312:438:45
12:49
#26482
25K
15.53 mi14:41:523:20:2312:5433:40
13:53
#26467
30K
18.64 mi15:28:464:07:1713:1646:54
15:06
#26498
20M
20.00 mi15:50:404:29:1113:2821:54
16:07
#26521
21M
21.00 mi16:05:594:44:3013:3315:19
15:19
#26516
35K
21.75 mi16:15:564:54:2713:329:57
13:18
#26505
23M
23.00 mi16:33:525:12:2313:3517:56
14:19
#26499
24M
24.00 mi16:47:365:26:0713:3513:44
13:44
#26491
40K
24.85 mi17:00:035:38:3413:3712:27
14:34
#26481
25.2M
25.20 mi17:05:315:44:0213:395:28
15:51
#26483
Finish
26.22 mi17:19:185:57:4913:3913:47
13:32
#26480
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF55-59Seg. OverallSeg. FemalesSeg. F55-59
5K3.11 mi3.11 mi26090111031110326432(Top 99%)11319(Top 99%)11319(Top 1389%)
10K6.21 mi3.10 mi26316-22611239-13611239-13626418(Top 99%)11310(Top 99%)11310(Top 1388%)
15K9.32 mi3.11 mi26374-5811278-3911278-3926432(Top 99%)11319(Top 99%)11319(Top 1389%)
20K12.43 mi3.11 mi26485-11111352-7411352-7426563(Top 100%)11396(Top 100%)11396(Top 1398%)
Half13.11 mi0.68 mi26482+311348+411348+426298(Top 99%)11242(Top 98%)11242(Top 1379%)
25K15.53 mi2.42 mi26467+1511338+1011338+1026297(Top 99%)11242(Top 98%)11242(Top 1379%)
30K18.64 mi3.11 mi26498-3111357-1911357-1926443(Top 99%)11336(Top 99%)11336(Top 1391%)
20M20.00 mi1.36 mi26521-2311371-1411371-1426499(Top 100%)11365(Top 99%)11365(Top 1394%)
21M21.00 mi1.00 mi26516+511366+511366+525910(Top 97%)11058(Top 97%)11058(Top 1357%)
35K21.75 mi0.75 mi26505+1111362+411362+425762(Top 97%)11025(Top 97%)11025(Top 1353%)
23M23.00 mi1.25 mi26499+611358+411358+426019(Top 98%)11146(Top 98%)11146(Top 1368%)
24M24.00 mi1.00 mi26491+811351+711351+725942(Top 97%)11138(Top 98%)11138(Top 1367%)
40K24.85 mi0.85 mi26481+1011346+511346+525977(Top 98%)11162(Top 98%)11162(Top 1370%)
25.2M25.20 mi0.35 mi26483-211348-211348-226082(Top 98%)11203(Top 98%)11203(Top 1375%)
Finish26.22 mi1.02 mi26480+311349-111349-126207(Top 98%)11271(Top 99%)11271(Top 1383%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 99%
×21stories
+97ft-345ft

Overall

26432

Females

11319

F55-59

11319

5K→10K

3.1 - 6.2 mi

Top 99%
×5stories
+79ft-138ft

Overall

26418

Females

11310

F55-59

11310

10K→15K

6.2 - 9.3 mi

Top 99%
×3stories
+67ft-78ft

Overall

26432

Females

11319

F55-59

11319

15K→20K

9.3 - 12.4 mi

Top 100%
×5stories
+106ft-86ft

Overall

26563

Females

11396

F55-59

11396

20K→Half

12.4 - 13.1 mi

Top 99%
×2stories
+19ft-37ft

Overall

26298

Females

11242

F55-59

11242

Half→25K

13.1 - 15.5 mi

Top 99%
×4stories
+66ft-88ft

Overall

26297

Females

11242

F55-59

11242

25K→30K

15.5 - 18.6 mi

Top 99%
×9stories
+181ft-148ft

Overall

26443

Females

11336

F55-59

11336

30K→20M

18.6 - 20.0 mi

Top 100%
×5stories
+64ft-50ft

Overall

26499

Females

11365

F55-59

11365

20M→21M

20.0 - 21.0 mi

Top 97%
×8stories
+106ft-24ft

Overall

25910

Females

11058

F55-59

11058

21M→35K

21.0 - 21.8 mi

Top 97%
×7stories
+17ft-86ft

Overall

25762

Females

11025

F55-59

11025

35K→23M

21.8 - 23.0 mi

Top 98%
×5stories
+23ft-63ft

Overall

26019

Females

11146

F55-59

11146

23M→24M

23.0 - 24.0 mi

Top 97%
×6stories
+12ft-82ft

Overall

25942

Females

11138

F55-59

11138

24M→40K

24.0 - 24.9 mi

Top 98%
×1story
+6ft-20ft

Overall

25977

Females

11162

F55-59

11162

40K→25.2M

24.9 - 25.2 mi

Top 98%
×1story
+13ft-16ft

Overall

26082

Females

11203

F55-59

11203

25.2M→Finish

25.2 - 26.2 mi

Top 98%
×2stories
+22ft-21ft

Overall

26207

Females

11271

F55-59

11271

Passing Analysis

Category:
Athletes Passed
133
Passed By
523
Net Change
-390
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#26090
5K → 10K5231-226#26090#26316
10K → 15K1876-58#26316#26374
15K → 20K7118-111#26374#26485
20K → Half63+3#26485#26482
Half → 25K2712+15#26482#26467
25K → 30K738-31#26467#26498
30K → 20M225-23#26498#26521
20M → 21M83+5#26521#26516
21M → 35K110+11#26516#26505
35K → 23M93+6#26505#26499
23M → 24M91+8#26499#26491
24M → 40K155+10#26491#26481
40K → 25.2M24-2#26481#26483
25.2M → Finish74+3#26483#26480
TOTALS133523-390
📊

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