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BOSTON MARATHON 2025

Molly Halcom

Bib: 16808•F

FL

0:00
0:00
/ mi
Masters
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Overall
#0 / 28404
Gender (Female)
#0 / 12228
Top 37%
Masters (Masters Women)
#0 / 6759
Top 23%
Division (F45-49)
#0 / 1813
Top 27%
Race Day Weather
50°/40°F
broken clouds

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
25:20
Rank: #17779
Start → 5K
25:20 | 8:09/mi
10K· 6.21 mi
50:11
Rank: #17084 (+695)
5K → 10K
24:51 | 8:00/mi
15K· 9.32 mi
1:15:05
Rank: #16747 (+337)
10K → 15K
24:54 | 8:01/mi
20K· 12.43 mi
1:40:18
Rank: #16461 (+286)
15K → 20K
25:13 | 8:07/mi
Half· 13.11 mi
1:45:43
Rank: #16416 (+45)
20K → Half
5:25 | 7:56/mi
25K· 15.53 mi
2:05:24
Rank: #16114 (+302)
Half → 25K
19:41 | 8:07/mi
30K· 18.64 mi
2:31:29
Rank: #15714 (+400)
25K → 30K
26:05 | 8:24/mi
20M
2:42:59
Rank: #15471 (+243)
30K → 20M
11:30 | 8:28/mi
21M
2:51:52
Rank: #15283 (+188)
20M → 21M
8:53 | 8:53/mi
35K· 21.75 mi
2:57:53
Rank: #15152 (+131)
21M → 35K
6:01 | 8:03/mi
23M
3:08:11
Rank: #14883 (+269)
35K → 23M
10:18 | 8:14/mi
24M
3:16:13
Rank: #14720 (+163)
23M → 24M
8:02 | 8:02/mi
40K· 24.85 mi
3:23:15
Rank: #14579 (+141)
24M → 40K
7:02 | 8:14/mi
25.2M
3:26:23
Rank: #14536 (+43)
40K → 25.2M
3:08 | 9:05/mi
Finish· 26.22 mi
3:34:34
Rank: #14444 (+92)
25.2M → Finish
8:11 | 8:02/mi

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:45:43
Pace8:04 /mi
2nd Half
Distance13.11 mi
Time1:48:51
Pace8:18 /mi
📊Positive Split: 3.0% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:59:0525:208:0925:20
8:09
-
10K
6.21 mi11:23:5650:118:0524:51
8:00
-0:09
15K
9.32 mi11:48:501:15:058:0324:54
8:01
+0:01
20K
12.43 mi12:14:031:40:188:0425:13
8:07
+0:06
Half
13.11 mi12:19:281:45:438:045:25
7:56
-0:11
25K
15.53 mi12:39:092:05:248:0419:41
8:07
+0:11
30K
18.64 mi13:05:142:31:298:0826:05
8:24
+0:17
20M
20.00 mi13:16:442:42:598:0911:30
8:28
+0:04
21M
21.00 mi13:25:372:51:528:118:53
8:53
+0:25
35K
21.75 mi13:31:382:57:538:116:01
8:03
-0:50
23M
23.00 mi13:41:563:08:118:1110:18
8:14
+0:11
24M
24.00 mi13:49:583:16:138:118:02
8:02
-0:12
40K
24.85 mi13:57:003:23:158:117:02
8:14
+0:12
25.2M
25.20 mi14:00:083:26:238:113:08
9:05
+0:51
Finish
26.22 mi14:08:193:34:348:118:11
8:02
-1:03

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

7:56 /mi

Average Pace

8:11 /mi

Slowest Pace

9:05 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

3:22:33

94% of race

Time at Steady Pace

12:01

6% of race

Time at Slower Pace

0:00

0% of race

Average Pace: 8:11 /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 mi10:59:0525:208:0925:20
8:09
#17779
10K
6.21 mi11:23:5650:118:0524:51
8:00
#17084
15K
9.32 mi11:48:501:15:058:0324:54
8:01
#16747
20K
12.43 mi12:14:031:40:188:0425:13
8:07
#16461
Half
13.11 mi12:19:281:45:438:045:25
7:56
#16416
25K
15.53 mi12:39:092:05:248:0419:41
8:07
#16114
30K
18.64 mi13:05:142:31:298:0826:05
8:24
#15714
20M
20.00 mi13:16:442:42:598:0911:30
8:28
#15471
21M
21.00 mi13:25:372:51:528:118:53
8:53
#15283
35K
21.75 mi13:31:382:57:538:116:01
8:03
#15152
23M
23.00 mi13:41:563:08:118:1110:18
8:14
#14883
24M
24.00 mi13:49:583:16:138:118:02
8:02
#14720
40K
24.85 mi13:57:003:23:158:117:02
8:14
#14579
25.2M
25.20 mi14:00:083:26:238:113:08
9:05
#14536
Finish
26.22 mi14:08:193:34:348:118:11
8:02
#14444
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF45-49Seg. OverallSeg. FemalesSeg. F45-49
5K3.11 mi3.11 mi177796200620016158(Top 57%)5231(Top 43%)5231(Top 289%)
10K6.21 mi3.10 mi17084+6955773+4275773+42716478(Top 58%)5408(Top 44%)5408(Top 298%)
15K9.32 mi3.11 mi16747+3375576+1975576+19716158(Top 57%)5231(Top 43%)5231(Top 289%)
20K12.43 mi3.11 mi16461+2865408+1685408+16815757(Top 55%)5066(Top 41%)5066(Top 279%)
Half13.11 mi0.68 mi16416+455384+245384+2415469(Top 54%)4869(Top 40%)4869(Top 269%)
25K15.53 mi2.42 mi16114+3025225+1595225+15914770(Top 52%)4626(Top 38%)4626(Top 255%)
30K18.64 mi3.11 mi15714+4005061+1645061+16414119(Top 50%)4443(Top 36%)4443(Top 245%)
20M20.00 mi1.36 mi15471+2434959+1024959+10213560(Top 48%)4277(Top 35%)4277(Top 236%)
21M21.00 mi1.00 mi15283+1884883+764883+7612852(Top 45%)4049(Top 33%)4049(Top 223%)
35K21.75 mi0.75 mi15152+1314823+604823+6012590(Top 44%)3953(Top 32%)3953(Top 218%)
23M23.00 mi1.25 mi14883+2694696+1274696+12711574(Top 41%)3529(Top 29%)3529(Top 195%)
24M24.00 mi1.00 mi14720+1634642+544642+5411535(Top 41%)3597(Top 29%)3597(Top 198%)
40K24.85 mi0.85 mi14579+1414586+564586+5611759(Top 41%)3794(Top 31%)3794(Top 209%)
25.2M25.20 mi0.35 mi14536+434585+14585+112369(Top 44%)4168(Top 34%)4168(Top 230%)
Finish26.22 mi1.02 mi14444+924560+254560+2513112(Top 46%)4500(Top 37%)4500(Top 248%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 57%
×21stories
+97ft-345ft

Overall

16158

Females

5231

F45-49

5231

5K→10K

3.1 - 6.2 mi

Top 58%
×5stories
+79ft-138ft

Overall

16478

Females

5408

F45-49

5408

10K→15K

6.2 - 9.3 mi

Top 57%
×3stories
+67ft-78ft

Overall

16158

Females

5231

F45-49

5231

15K→20K

9.3 - 12.4 mi

Top 55%
×5stories
+106ft-86ft

Overall

15757

Females

5066

F45-49

5066

20K→Half

12.4 - 13.1 mi

Top 54%
×2stories
+19ft-37ft

Overall

15469

Females

4869

F45-49

4869

Half→25K

13.1 - 15.5 mi

Top 52%
×4stories
+66ft-88ft

Overall

14770

Females

4626

F45-49

4626

25K→30K

15.5 - 18.6 mi

Top 50%
×9stories
+181ft-148ft

Overall

14119

Females

4443

F45-49

4443

30K→20M

18.6 - 20.0 mi

Top 48%
×5stories
+64ft-50ft

Overall

13560

Females

4277

F45-49

4277

20M→21M

20.0 - 21.0 mi

Top 45%
×8stories
+106ft-24ft

Overall

12852

Females

4049

F45-49

4049

21M→35K

21.0 - 21.8 mi

Top 44%
×7stories
+17ft-86ft

Overall

12590

Females

3953

F45-49

3953

35K→23M

21.8 - 23.0 mi

Top 41%
×5stories
+23ft-63ft

Overall

11574

Females

3529

F45-49

3529

23M→24M

23.0 - 24.0 mi

Top 41%
×6stories
+12ft-82ft

Overall

11535

Females

3597

F45-49

3597

24M→40K

24.0 - 24.9 mi

Top 41%
×1story
+6ft-20ft

Overall

11759

Females

3794

F45-49

3794

40K→25.2M

24.9 - 25.2 mi

Top 44%
×1story
+13ft-16ft

Overall

12369

Females

4168

F45-49

4168

25.2M→Finish

25.2 - 26.2 mi

Top 46%
×2stories
+22ft-21ft

Overall

13112

Females

4500

F45-49

4500

Passing Analysis

Category:
Athletes Passed
3772
Passed By
437
Net Change
+3335
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#17779
5K → 10K77176+695#17779#17084
10K → 15K40063+337#17084#16747
15K → 20K36781+286#16747#16461
20K → Half5914+45#16461#16416
Half → 25K32927+302#16416#16114
25K → 30K45959+400#16114#15714
30K → 20M25613+243#15714#15471
20M → 21M21123+188#15471#15283
21M → 35K14312+131#15283#15152
35K → 23M2789+269#15152#14883
23M → 24M1707+163#14883#14720
24M → 40K1509+141#14720#14579
40K → 25.2M5310+43#14579#14536
25.2M → Finish12634+92#14536#14444
TOTALS3772437+3335
📊

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