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BOSTON MARATHON 2025

Molly Williamson

Bib: 27256•F

MA

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

Start
0:00:00
Race begins
5K· 3.11 mi
32:10
Rank: #26420
Start → 5K
10:21/mi
32:10 split
10K· 6.21 mi
1:04:17
Rank: #26185 (+235)
5K → 10K
10:20/mi
32:07 split
15K· 9.32 mi
1:35:34
Rank: #25827 (+358)
10K → 15K
10:04/mi
31:17 split
20K· 12.43 mi
2:07:14
Rank: #25500 (+327)
15K → 20K
10:12/mi
31:40 split
Half· 13.11 mi
2:13:53
Rank: #25436 (+64)
20K → Half
9:45/mi
6:39 split
25K· 15.53 mi
2:38:47
Rank: #25167 (+269)
Half → 25K
10:16/mi
24:54 split
30K· 18.64 mi
3:11:56
Rank: #24860 (+307)
25K → 30K
10:40/mi
33:09 split
20M
3:26:01
Rank: #24681 (+179)
30K → 20M
10:22/mi
14:05 split
21M
3:36:41
Rank: #24494 (+187)
20M → 21M
10:40/mi
10:40 split
35K· 21.75 mi
3:43:59
Rank: #24406 (+88)
21M → 35K
9:45/mi
7:18 split
23M
3:56:58
Rank: #24256 (+150)
35K → 23M
10:22/mi
12:59 split
24M
4:06:33
Rank: #24104 (+152)
23M → 24M
9:35/mi
9:35 split
40K· 24.85 mi
4:14:47
Rank: #23956 (+148)
24M → 40K
9:38/mi
8:14 split
25.2M
4:18:17
Rank: #23883 (+73)
40K → 25.2M
10:09/mi
3:30 split
Finish· 26.22 mi
4:27:07
Rank: #23712 (+171)
25.2M → Finish
8:40/mi
8:50 split

The Course

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Half Splits

1st Half· via Half⚖️ Balanced
Distance13.11 mi
Time2:13:53
Pace10:13 /mi
2nd Half⚖️ Balanced
Distance13.11 mi
Time2:13:14
Pace10:10 /mi
📊Even Split: Consistent pacing between halves

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:52:0232:1010:2132:10
10:21
-
10K
6.21 mi12:24:091:04:1710:2132:07
10:20
-0:01
15K
9.32 mi12:55:261:35:3410:1531:17
10:04
-0:16
20K
12.43 mi13:27:062:07:1410:1431:40
10:12
+0:08
Half
13.11 mi13:33:452:13:5310:136:39
9:45
-0:27
25K
15.53 mi13:58:392:38:4710:1324:54
10:16
+0:31
30K
18.64 mi14:31:483:11:5610:1833:09
10:40
+0:24
20M
20.00 mi14:45:533:26:0110:1814:05
10:22
-0:18
21M
21.00 mi14:56:333:36:4110:1910:40
10:40
+0:18
35K
21.75 mi15:03:513:43:5910:187:18
9:45
-0:55
23M
23.00 mi15:16:503:56:5810:1812:59
10:22
+0:37
24M
24.00 mi15:26:254:06:3310:169:35
9:35
-0:47
40K
24.85 mi15:34:394:14:4710:158:14
9:38
+0:03
25.2M
25.20 mi15:38:094:18:1710:153:30
10:09
+0:31
Finish
26.22 mi15:46:594:27:0710:128:50
8:40
-1:29

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

8:40 /mi

Average Pace

10:12 /mi

Slowest Pace

10:40 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

40:36

15% of race

Time at Steady Pace

3:02:42

68% of race

Time at Slower Pace

43:49

16% of race

Average Pace: 10:11 /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 mi11:52:0232:1010:2132:10
10:21
#26420
10K
6.21 mi12:24:091:04:1710:2132:07
10:20
#26185
15K
9.32 mi12:55:261:35:3410:1531:17
10:04
#25827
20K
12.43 mi13:27:062:07:1410:1431:40
10:12
#25500
Half
13.11 mi13:33:452:13:5310:136:39
9:45
#25436
25K
15.53 mi13:58:392:38:4710:1324:54
10:16
#25167
30K
18.64 mi14:31:483:11:5610:1833:09
10:40
#24860
20M
20.00 mi14:45:533:26:0110:1814:05
10:22
#24681
21M
21.00 mi14:56:333:36:4110:1910:40
10:40
#24494
35K
21.75 mi15:03:513:43:5910:187:18
9:45
#24406
23M
23.00 mi15:16:503:56:5810:1812:59
10:22
#24256
24M
24.00 mi15:26:254:06:3310:169:35
9:35
#24104
40K
24.85 mi15:34:394:14:4710:158:14
9:38
#23956
25.2M
25.20 mi15:38:094:18:1710:153:30
10:09
#23883
Finish
26.22 mi15:46:594:27:0710:128:50
8:40
#23712
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF18-39Seg. OverallSeg. FemalesSeg. F18-39
5K3.11 mi3.11 mi26420109871098725135(Top 88%)10297(Top 84%)10297(Top 188%)
10K6.21 mi3.10 mi26185+23510873+11410873+11425990(Top 92%)10784(Top 88%)10784(Top 197%)
15K9.32 mi3.11 mi25827+35810684+18910684+18925135(Top 88%)10297(Top 84%)10297(Top 188%)
20K12.43 mi3.11 mi25500+32710510+17410510+17424623(Top 87%)10062(Top 82%)10062(Top 184%)
Half13.11 mi0.68 mi25436+6410477+3310477+3324262(Top 85%)9851(Top 81%)9851(Top 180%)
25K15.53 mi2.42 mi25167+26910349+12810349+12823887(Top 84%)9682(Top 79%)9682(Top 177%)
30K18.64 mi3.11 mi24860+30710198+15110198+15123328(Top 82%)9510(Top 78%)9510(Top 174%)
20M20.00 mi1.36 mi24681+17910120+7810120+7822068(Top 78%)8931(Top 73%)8931(Top 163%)
21M21.00 mi1.00 mi24494+18710028+9210028+9220540(Top 72%)8213(Top 67%)8213(Top 150%)
35K21.75 mi0.75 mi24406+889997+319997+3121236(Top 75%)8644(Top 71%)8644(Top 158%)
23M23.00 mi1.25 mi24256+1509931+669931+6621667(Top 76%)8908(Top 73%)8908(Top 163%)
24M24.00 mi1.00 mi24104+1529872+599872+5919955(Top 70%)8066(Top 66%)8066(Top 147%)
40K24.85 mi0.85 mi23956+1489798+749798+7419242(Top 68%)7762(Top 63%)7762(Top 142%)
25.2M25.20 mi0.35 mi23883+739766+329766+3217798(Top 63%)7050(Top 58%)7050(Top 129%)
Finish26.22 mi1.02 mi23712+1719687+799687+7917337(Top 61%)6740(Top 55%)6740(Top 123%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 88%
×21story building
+97ft-345ft

Overall

25135

Females

10297

F18-39

10297

5K→10K

3.1 - 6.2 mi

Top 92%
×5story building
+79ft-138ft

Overall

25990

Females

10784

F18-39

10784

10K→15K

6.2 - 9.3 mi

Top 88%
×3story building
+67ft-78ft

Overall

25135

Females

10297

F18-39

10297

15K→20K

9.3 - 12.4 mi

Top 87%
×5story building
+106ft-86ft

Overall

24623

Females

10062

F18-39

10062

20K→Half

12.4 - 13.1 mi

Top 85%
×2story building
+19ft-37ft

Overall

24262

Females

9851

F18-39

9851

Half→25K

13.1 - 15.5 mi

Top 84%
×4story building
+66ft-88ft

Overall

23887

Females

9682

F18-39

9682

25K→30K

15.5 - 18.6 mi

Top 82%
×9story building
+181ft-148ft

Overall

23328

Females

9510

F18-39

9510

30K→20M

18.6 - 20.0 mi

Top 78%
×5story building
+64ft-50ft

Overall

22068

Females

8931

F18-39

8931

20M→21M

20.0 - 21.0 mi

Top 72%
×8story building
+106ft-24ft

Overall

20540

Females

8213

F18-39

8213

21M→35K

21.0 - 21.8 mi

Top 75%
×7story building
+17ft-86ft

Overall

21236

Females

8644

F18-39

8644

35K→23M

21.8 - 23.0 mi

Top 76%
×5story building
+23ft-63ft

Overall

21667

Females

8908

F18-39

8908

23M→24M

23.0 - 24.0 mi

Top 70%
×6story building
+12ft-82ft

Overall

19955

Females

8066

F18-39

8066

24M→40K

24.0 - 24.9 mi

Top 68%
×1story
+6ft-20ft

Overall

19242

Females

7762

F18-39

7762

40K→25.2M

24.9 - 25.2 mi

Top 63%
×1story
+13ft-16ft

Overall

17798

Females

7050

F18-39

7050

25.2M→Finish

25.2 - 26.2 mi

Top 61%
×2story building
+22ft-21ft

Overall

17337

Females

6740

F18-39

6740

Passing Analysis

Category:
Athletes Passed
2824
Passed By
116
Net Change
+2708
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#26420
5K → 10K30065+235#26420#26185
10K → 15K36810+358#26185#25827
15K → 20K33710+327#25827#25500
20K → Half640+64#25500#25436
Half → 25K2745+269#25436#25167
25K → 30K32114+307#25167#24860
30K → 20M1812+179#24860#24681
20M → 21M1881+187#24681#24494
21M → 35K891+88#24494#24406
35K → 23M1566+150#24406#24256
23M → 24M1531+152#24256#24104
24M → 40K1480+148#24104#23956
40K → 25.2M730+73#23956#23883
25.2M → Finish1721+171#23883#23712
TOTALS2824116+2708
📊

Passing Visuals

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