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BOSTON MARATHON 2023

Molly Bierman

Bib: 26147•F

RI

0:00
0:00
/ mi
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Overall
#0 / 26622
Gender (Female)
#0 / 11423
Division (F18-39)
#0 / 4884
Race Day Weather
49°/39°F
light intensity drizzle

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
34:38
Rank: #25881
Start → 5K
34:38 | 11:09/mi
10K· 6.21 mi
1:10:11
Rank: #25920 (-39)
5K → 10K
35:33 | 11:27/mi
15K· 9.32 mi
1:47:25
Rank: #25994 (-74)
10K → 15K
37:14 | 11:59/mi
20K· 12.43 mi
2:28:08
Rank: #26105 (-111)
15K → 20K
40:43 | 13:06/mi
Half· 13.11 mi
2:36:47
Rank: #26116 (-11)
20K → Half
8:39 | 12:41/mi
25K· 15.53 mi
3:10:02
Rank: #26164 (-48)
Half → 25K
33:15 | 13:43/mi
30K· 18.64 mi
3:59:39
Rank: #26327 (-163)
25K → 30K
49:37 | 15:58/mi
20M
4:23:19
Rank: #26423 (-96)
30K → 20M
23:40 | 17:25/mi
21M
4:41:07
Rank: #26465 (-42)
20M → 21M
17:48 | 17:48/mi
35K· 21.75 mi
4:53:50
Rank: #26498 (-33)
21M → 35K
12:43 | 17:00/mi
23M
5:14:59
Rank: #26531 (-33)
35K → 23M
21:09 | 16:54/mi
24M
5:31:51
Rank: #26567 (-36)
23M → 24M
16:52 | 16:52/mi
40K· 24.85 mi
5:46:00
Rank: #26580 (-13)
24M → 40K
14:09 | 16:33/mi
25.2M
5:51:45
Rank: #26581 (-1)
40K → 25.2M
5:45 | 16:40/mi
Finish· 26.22 mi
6:05:49
Rank: #26582 (-1)
25.2M → Finish
14:04 | 13:48/mi

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time2:36:47
Pace11:58 /mi
2nd Half
Distance13.11 mi
Time3:29:02
Pace15:57 /mi
📊Positive Split: 33.3% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:50:5134:3811:0934:38
11:09
-
10K
6.21 mi12:26:241:10:1111:1835:33
11:27
+0:18
15K
9.32 mi13:03:381:47:2511:3137:14
11:59
+0:32
20K
12.43 mi13:44:212:28:0811:5540:43
13:06
+1:07
Half
13.11 mi13:53:002:36:4711:588:39
12:41
-0:25
25K
15.53 mi14:26:153:10:0212:1433:15
13:43
+1:02
30K
18.64 mi15:15:523:59:3912:5149:37
15:58
+2:15
20M
20.00 mi15:39:324:23:1913:1023:40
17:25
+1:27
21M
21.00 mi15:57:204:41:0713:2317:48
17:48
+0:23
35K
21.75 mi16:10:034:53:5013:3112:43
17:00
-0:48
23M
23.00 mi16:31:125:14:5913:4221:09
16:54
-0:06
24M
24.00 mi16:48:045:31:5113:5016:52
16:52
-0:02
40K
24.85 mi17:02:135:46:0013:5514:09
16:33
-0:19
25.2M
25.20 mi17:07:585:51:4513:585:45
16:40
+0:07
Finish
26.22 mi17:22:026:05:4913:5814:04
13:48
-2:52

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

11:09 /mi

Average Pace

13:58 /mi

Slowest Pace

17:48 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

3:24:06

56% of race

Time at Steady Pace

2:00:15

33% of race

Time at Slower Pace

41:28

11% of race

Average Pace: 13:57 /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 mi11:50:5134:3811:0934:38
11:09
#25881
10K
6.21 mi12:26:241:10:1111:1835:33
11:27
#25920
15K
9.32 mi13:03:381:47:2511:3137:14
11:59
#25994
20K
12.43 mi13:44:212:28:0811:5540:43
13:06
#26105
Half
13.11 mi13:53:002:36:4711:588:39
12:41
#26116
25K
15.53 mi14:26:153:10:0212:1433:15
13:43
#26164
30K
18.64 mi15:15:523:59:3912:5149:37
15:58
#26327
20M
20.00 mi15:39:324:23:1913:1023:40
17:25
#26423
21M
21.00 mi15:57:204:41:0713:2317:48
17:48
#26465
35K
21.75 mi16:10:034:53:5013:3112:43
17:00
#26498
23M
23.00 mi16:31:125:14:5913:4221:09
16:54
#26531
24M
24.00 mi16:48:045:31:5113:5016:52
16:52
#26567
40K
24.85 mi17:02:135:46:0013:5514:09
16:33
#26580
25.2M
25.20 mi17:07:585:51:4513:585:45
16:40
#26581
Finish
26.22 mi17:22:026:05:4913:5814:04
13:48
#26582
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF18-39Seg. OverallSeg. FemalesSeg. F18-39
5K3.11 mi3.11 mi25881109791097926046(Top 98%)11069(Top 97%)11069(Top 227%)
10K6.21 mi3.10 mi25920-3910989-1010989-1025916(Top 97%)10989(Top 96%)10989(Top 225%)
15K9.32 mi3.11 mi25994-7411036-4711036-4726046(Top 98%)11069(Top 97%)11069(Top 227%)
20K12.43 mi3.11 mi26105-11111109-7311109-7326276(Top 99%)11220(Top 98%)11220(Top 230%)
Half13.11 mi0.68 mi26116-1111114-511114-526242(Top 99%)11212(Top 98%)11212(Top 230%)
25K15.53 mi2.42 mi26164-4811146-3211146-3226224(Top 99%)11203(Top 98%)11203(Top 229%)
30K18.64 mi3.11 mi26327-16311241-9511241-9526560(Top 100%)11393(Top 100%)11393(Top 233%)
20M20.00 mi1.36 mi26423-9611305-6411305-6426565(Top 100%)11399(Top 100%)11399(Top 233%)
21M21.00 mi1.00 mi26465-4211333-2811333-2826534(Top 100%)11379(Top 100%)11379(Top 233%)
35K21.75 mi0.75 mi26498-3311357-2411357-2426568(Top 100%)11402(Top 100%)11402(Top 233%)
23M23.00 mi1.25 mi26531-3311378-2111378-2126552(Top 100%)11395(Top 100%)11395(Top 233%)
24M24.00 mi1.00 mi26567-3611398-2011398-2026570(Top 100%)11404(Top 100%)11404(Top 233%)
40K24.85 mi0.85 mi26580-1311405-711405-726493(Top 100%)11376(Top 100%)11376(Top 233%)
25.2M25.20 mi0.35 mi26581-111406-111406-126308(Top 99%)11310(Top 99%)11310(Top 232%)
Finish26.22 mi1.02 mi26582-111407-111407-126306(Top 99%)11313(Top 99%)11313(Top 232%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 98%
×21stories
+97ft-345ft

Overall

26046

Females

11069

F18-39

11069

5K→10K

3.1 - 6.2 mi

Top 97%
×5stories
+79ft-138ft

Overall

25916

Females

10989

F18-39

10989

10K→15K

6.2 - 9.3 mi

Top 98%
×3stories
+67ft-78ft

Overall

26046

Females

11069

F18-39

11069

15K→20K

9.3 - 12.4 mi

Top 99%
×5stories
+106ft-86ft

Overall

26276

Females

11220

F18-39

11220

20K→Half

12.4 - 13.1 mi

Top 99%
×2stories
+19ft-37ft

Overall

26242

Females

11212

F18-39

11212

Half→25K

13.1 - 15.5 mi

Top 99%
×4stories
+66ft-88ft

Overall

26224

Females

11203

F18-39

11203

25K→30K

15.5 - 18.6 mi

Top 100%
×9stories
+181ft-148ft

Overall

26560

Females

11393

F18-39

11393

30K→20M

18.6 - 20.0 mi

Top 100%
×5stories
+64ft-50ft

Overall

26565

Females

11399

F18-39

11399

20M→21M

20.0 - 21.0 mi

Top 100%
×8stories
+106ft-24ft

Overall

26534

Females

11379

F18-39

11379

21M→35K

21.0 - 21.8 mi

Top 100%
×7stories
+17ft-86ft

Overall

26568

Females

11402

F18-39

11402

35K→23M

21.8 - 23.0 mi

Top 100%
×5stories
+23ft-63ft

Overall

26552

Females

11395

F18-39

11395

23M→24M

23.0 - 24.0 mi

Top 100%
×6stories
+12ft-82ft

Overall

26570

Females

11404

F18-39

11404

24M→40K

24.0 - 24.9 mi

Top 100%
×1story
+6ft-20ft

Overall

26493

Females

11376

F18-39

11376

40K→25.2M

24.9 - 25.2 mi

Top 99%
×1story
+13ft-16ft

Overall

26308

Females

11310

F18-39

11310

25.2M→Finish

25.2 - 26.2 mi

Top 99%
×2stories
+22ft-21ft

Overall

26306

Females

11313

F18-39

11313

Passing Analysis

Category:
Athletes Passed
182
Passed By
883
Net Change
-701
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#25881
5K → 10K91130-39#25881#25920
10K → 15K41115-74#25920#25994
15K → 20K13124-111#25994#26105
20K → Half314-11#26105#26116
Half → 25K1765-48#26116#26164
25K → 30K5168-163#26164#26327
30K → 20M4100-96#26327#26423
20M → 21M244-42#26423#26465
21M → 35K134-33#26465#26498
35K → 23M134-33#26498#26531
23M → 24M036-36#26531#26567
24M → 40K417-13#26567#26580
40K → 25.2M01-1#26580#26581
25.2M → Finish01-1#26581#26582
TOTALS182883-701
📊

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