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BOSTON MARATHON 2025

Molly Bacon

MA

Bib: 26139 F

0:00
0:00
/ mi
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Overall
#0 / 28404
Gender (Female)
#0 / 12228
Division (F18-39)
#0 / 5469
Race Day Weather
50°/40°F
broken clouds

Race Timeline

Ribbon color based on
FasterSteadySlower· vs. your average pace
Start
0:00
Race begins
469 ft elev
5K· 3.11 mi
12:34/mi
39:04
↑ 97↓ 3451.5%
220 ft elev
10K· 6.21 mi
12:24/mi
1:17:34
↑ 79↓ 1380.4%
157 ft elev
15K· 9.32 mi
12:32/mi
1:56:29
↑ 67↓ 78
146 ft elev
20K· 12.43 mi
13:05/mi
2:37:08
↑ 106↓ 860.1%
165 ft elev
Half· 13.11 mi
12:25/mi
2:45:36
↑ 19↓ 370.5%
148 ft elev
25K· 15.53 mi
13:15/mi
3:17:44
↑ 66↓ 880.2%
127 ft elev
30K· 18.64 mi
13:32/mi
3:59:46
↑ 181↓ 1480.2%
138 ft elev
20M
13:35/mi
4:18:14
↑ 64↓ 500.2%
148 ft elev
21M
14:15/mi
4:32:29
↑ 106↓ 241.6%
227 ft elev
35K· 21.75 mi
14:22/mi
4:43:14
↑ 17↓ 861.7%
156 ft elev
23M
13:52/mi
5:00:36
↑ 23↓ 630.6%
116 ft elev
24M
13:20/mi
5:13:56
↓ 821.3%
34 ft elev
40K· 24.85 mi
13:53/mi
5:25:48
↓ 200.3%
20 ft elev
25.2M
14:47/mi
5:30:54
↑ 13↓ 160.2%
18 ft elev
Finish· 26.22 mi
11:58/mi
5:43:06
↑ 22↓ 21
17 ft elev
Course Elevation
7–469 ft
≈
×2stacked redwood trees
•▲ 890 ft climb · ▼ 1342 ft descent

The Course

Half Splits

1st Half· via Half
2:45:3612:38 /mi⚡ faster
2nd Half
2:57:3013:32 /mi+7.2%
Positive split — 7.2% slower in the second half
Is this your race?

Your race, unpacked

See your splits, ranks & AI insights.

Checkpoint Splits

CheckpointTimeAvg PaceSegment LengthSegment TimeSegment PaceTrendDiff
5K
39:0412:343.11 mi39:04
12:34
-
10K
1:17:3412:293.10 mi38:30
12:24
-0:10
15K
1:56:2912:303.11 mi38:55
12:32
+0:08
20K
2:37:0812:393.11 mi40:39
13:05
+0:33
Half(13.11 mi)
2:45:3612:380.68 mi8:28
12:25
-0:40
25K
3:17:4412:442.42 mi32:08
13:15
+0:50
30K
3:59:4612:523.11 mi42:02
13:32
+0:17
20M
4:18:1412:551.36 mi18:28
13:35
+0:03
21M
4:32:2912:591.00 mi14:15
14:15
+0:40
35K
4:43:1413:010.75 mi10:45
14:22
+0:07
23M
5:00:3613:041.25 mi17:22
13:52
-0:30
24M
5:13:5613:051.00 mi13:20
13:20
-0:32
40K
5:25:4813:060.85 mi11:52
13:53
+0:33
25.2M
5:30:5413:080.35 mi5:06
14:47
+0:54
Finish(26.22 mi)
5:43:0613:061.02 mi12:12
11:58
-2:49
Trend:
Faster pace
Steady pace
Slower pace

Checkpoints & Pacing

Pace Line

Fastest Pace

11:58 /mi

Average Pace

13:06 /mi

Slowest Pace

14:47 /mi

Loading chart...
Fastest
Middle
Slowest
Average

Segments

Time at Faster Pace

2:17:09

40% of race

Time at Steady Pace

2:26:37

43% of race

Time at Slower Pace

59:20

17% of race

Average Pace: 13:05 /mi

Loading chart...
Faster pace (< avg)
Steady pace (≈ avg)
Slower pace (> avg)

Heatmap

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0mi6.6mi13.1mi19.7mi26.2mi
Pace:
Faster
Steady
Slower

Checkpoint and Segment Rankings

CheckpointSeg. DistOverallFemalesF18-39Seg. OverallSeg. FemalesSeg. F18-39
5K3.11 mi283451218812188279481194411944
10K3.10 mi28284+6112154+3412154+34281371206212062
15K3.11 mi28231+5312119+3512119+35279481194411944
20K3.11 mi28181+5012089+3012089+30278711191411914
Half(13.11 mi)0.68 mi28155+2612071+1812071+18277151183311833
25K2.42 mi28084+7112029+4212029+42274701169611696
30K3.11 mi27976+10811977+5211977+52271601158611586
20M1.36 mi27936+4011957+2011957+20269831155111551
21M1.00 mi27887+4911933+2411933+24264811130311303
35K0.75 mi27912-2511947-1411947-14278641203212032
23M1.25 mi27878+3411939+811939+8272101171111711
24M1.00 mi27858+2011932+711932+7271721173011730
40K0.85 mi27851+711933-111933-1270761168711687
25.2M0.35 mi27841+1011931+211931+2269641164911649
Finish(26.22 mi)1.02 mi27814+2711923+811923+8267531150711507

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 98%
×21story building
+97ft-345ft

Overall

27948

Females

11944

F18-39

11944

5K→10K

3.1 - 6.2 mi

Top 99%
×5story building
+79ft-138ft

Overall

28137

Females

12062

F18-39

12062

10K→15K

6.2 - 9.3 mi

Top 98%
×3story building
+67ft-78ft

Overall

27948

Females

11944

F18-39

11944

15K→20K

9.3 - 12.4 mi

Top 98%
×5story building
+106ft-86ft

Overall

27871

Females

11914

F18-39

11914

20K→Half

12.4 - 13.1 mi

Top 98%
×2story building
+19ft-37ft

Overall

27715

Females

11833

F18-39

11833

Half→25K

13.1 - 15.5 mi

Top 97%
×4story building
+66ft-88ft

Overall

27470

Females

11696

F18-39

11696

25K→30K

15.5 - 18.6 mi

Top 96%
×9story building
+181ft-148ft

Overall

27160

Females

11586

F18-39

11586

30K→20M

18.6 - 20.0 mi

Top 95%
×5story building
+64ft-50ft

Overall

26983

Females

11551

F18-39

11551

20M→21M

20.0 - 21.0 mi

Top 93%
×8story building
+106ft-24ft

Overall

26481

Females

11303

F18-39

11303

21M→35K

21.0 - 21.8 mi

Top 98%
×7story building
+17ft-86ft

Overall

27864

Females

12032

F18-39

12032

35K→23M

21.8 - 23.0 mi

Top 96%
×5story building
+23ft-63ft

Overall

27210

Females

11711

F18-39

11711

23M→24M

23.0 - 24.0 mi

Top 96%
×6story building
+12ft-82ft

Overall

27172

Females

11730

F18-39

11730

24M→40K

24.0 - 24.9 mi

Top 95%
×1story
+6ft-20ft

Overall

27076

Females

11687

F18-39

11687

40K→25.2M

24.9 - 25.2 mi

Top 95%
×1story
+13ft-16ft

Overall

26964

Females

11649

F18-39

11649

25.2M→Finish

25.2 - 26.2 mi

Top 94%
×2story building
+22ft-21ft

Overall

26753

Females

11507

F18-39

11507

Passing Analysis

Category:
▲Net Change
+0
0 passed by0 passed
SegmentMovementRank
Start → 5K-#28345
5K → 10K
263+61
#28345 → #28284
10K → 15K
457+53
#28284 → #28231
15K → 20K
959+50
#28231 → #28181
20K → Half
430+26
#28181 → #28155
Half → 25K
475+71
#28155 → #28084
25K → 30K
5113+108
#28084 → #27976
30K → 20M
545+40
#27976 → #27936
20M → 21M
352+49
#27936 → #27887
21M → 35K
338-25
#27887 → #27912
35K → 23M
539+34
#27912 → #27878
23M → 24M
525+20
#27878 → #27858
24M → 40K
1118+7
#27858 → #27851
40K → 25.2M
010+10
#27851 → #27841
25.2M → Finish
734+27
#27841 → #27814
TOTALS
97628+531
#28345 → #27814

Passing Visualized

Category:
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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