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BOSTON MARATHON 2025

Lillian Stafford

Bib: 17128•F

NY

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
26:14
Rank: #19580
Start → 5K
26:14 | 8:27/mi
10K· 6.21 mi
52:28
Rank: #19501 (+79)
5K → 10K
26:14 | 8:27/mi
15K· 9.32 mi
1:19:11
Rank: #19622 (-121)
10K → 15K
26:43 | 8:36/mi
20K· 12.43 mi
1:46:17
Rank: #19604 (+18)
15K → 20K
27:06 | 8:43/mi
Half· 13.11 mi
1:52:06
Rank: #19593 (+11)
20K → Half
5:49 | 8:32/mi
25K· 15.53 mi
2:14:05
Rank: #19690 (-97)
Half → 25K
21:59 | 9:04/mi
30K· 18.64 mi
2:42:48
Rank: #19511 (+179)
25K → 30K
28:43 | 9:15/mi
20M
2:55:29
Rank: #19435 (+76)
30K → 20M
12:41 | 9:20/mi
21M
3:06:19
Rank: #19564 (-129)
20M → 21M
10:50 | 10:50/mi
35K· 21.75 mi
3:13:17
Rank: #19570 (-6)
21M → 35K
6:58 | 9:19/mi
23M
3:25:44
Rank: #19634 (-64)
35K → 23M
12:27 | 9:57/mi
24M
3:36:20
Rank: #19864 (-230)
23M → 24M
10:36 | 10:36/mi
40K· 24.85 mi
3:44:42
Rank: #19870 (-6)
24M → 40K
8:22 | 9:47/mi
25.2M
3:48:55
Rank: #19978 (-108)
40K → 25.2M
4:13 | 12:14/mi
Finish· 26.22 mi
3:58:12
Rank: #19981 (-3)
25.2M → Finish
9:17 | 9:07/mi

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:52:06
Pace8:33 /mi
2nd Half
Distance13.11 mi
Time2:06:06
Pace9:37 /mi
📊Positive Split: 12.5% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:19:0626:148:2726:14
8:27
-
10K
6.21 mi11:45:2052:288:2726:14
8:27
0:00
15K
9.32 mi12:12:031:19:118:3026:43
8:36
+0:09
20K
12.43 mi12:39:091:46:178:3327:06
8:43
+0:07
Half
13.11 mi12:44:581:52:068:335:49
8:32
-0:11
25K
15.53 mi13:06:572:14:058:3821:59
9:04
+0:32
30K
18.64 mi13:35:402:42:488:4428:43
9:15
+0:11
20M
20.00 mi13:48:212:55:298:4612:41
9:20
+0:05
21M
21.00 mi13:59:113:06:198:5210:50
10:50
+1:30
35K
21.75 mi14:06:093:13:178:536:58
9:19
-1:31
23M
23.00 mi14:18:363:25:448:5712:27
9:57
+0:38
24M
24.00 mi14:29:123:36:209:0110:36
10:36
+0:39
40K
24.85 mi14:37:343:44:429:028:22
9:47
-0:49
25.2M
25.20 mi14:41:473:48:559:054:13
12:14
+2:27
Finish
26.22 mi14:51:043:58:129:059:17
9:07
-3:07

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

8:27 /mi

Average Pace

9:05 /mi

Slowest Pace

12:14 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

1:52:06

47% of race

Time at Steady Pace

1:19:38

33% of race

Time at Slower Pace

46:28

20% of race

Average Pace: 9:05 /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 mi11:19:0626:148:2726:14
8:27
#19580
10K
6.21 mi11:45:2052:288:2726:14
8:27
#19501
15K
9.32 mi12:12:031:19:118:3026:43
8:36
#19622
20K
12.43 mi12:39:091:46:178:3327:06
8:43
#19604
Half
13.11 mi12:44:581:52:068:335:49
8:32
#19593
25K
15.53 mi13:06:572:14:058:3821:59
9:04
#19690
30K
18.64 mi13:35:402:42:488:4428:43
9:15
#19511
20M
20.00 mi13:48:212:55:298:4612:41
9:20
#19435
21M
21.00 mi13:59:113:06:198:5210:50
10:50
#19564
35K
21.75 mi14:06:093:13:178:536:58
9:19
#19570
23M
23.00 mi14:18:363:25:448:5712:27
9:57
#19634
24M
24.00 mi14:29:123:36:209:0110:36
10:36
#19864
40K
24.85 mi14:37:343:44:429:028:22
9:47
#19870
25.2M
25.20 mi14:41:473:48:559:054:13
12:14
#19978
Finish
26.22 mi14:51:043:58:129:059:17
9:07
#19981
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF18-39Seg. OverallSeg. FemalesSeg. F18-39
5K3.11 mi3.11 mi195807247724719931(Top 70%)7407(Top 61%)7407(Top 135%)
10K6.21 mi3.10 mi19501+797185+627185+6219488(Top 69%)7167(Top 59%)7167(Top 131%)
15K9.32 mi3.11 mi19622-1217248-637248-6319931(Top 70%)7407(Top 61%)7407(Top 135%)
20K12.43 mi3.11 mi19604+187247+17247+119544(Top 69%)7230(Top 59%)7230(Top 132%)
Half13.11 mi0.68 mi19593+117244+37244+319434(Top 68%)7155(Top 59%)7155(Top 131%)
25K15.53 mi2.42 mi19690-977311-677311-6720217(Top 71%)7656(Top 63%)7656(Top 140%)
30K18.64 mi3.11 mi19511+1797244+677244+6718871(Top 66%)7051(Top 58%)7051(Top 129%)
20M20.00 mi1.36 mi19435+767225+197225+1918466(Top 65%)6988(Top 57%)6988(Top 128%)
21M21.00 mi1.00 mi19564-1297326-1017326-10120937(Top 74%)8419(Top 69%)8419(Top 154%)
35K21.75 mi0.75 mi19570-67347-217347-2119645(Top 69%)7793(Top 64%)7793(Top 142%)
23M23.00 mi1.25 mi19634-647416-697416-6920304(Top 71%)8201(Top 67%)8201(Top 150%)
24M24.00 mi1.00 mi19864-2307575-1597575-15923080(Top 81%)9673(Top 79%)9673(Top 177%)
40K24.85 mi0.85 mi19870-67591-167591-1619779(Top 70%)8031(Top 66%)8031(Top 147%)
25.2M25.20 mi0.35 mi19978-1087654-637654-6323671(Top 83%)10003(Top 82%)10003(Top 183%)
Finish26.22 mi1.02 mi19981-37669-157669-1519567(Top 69%)7904(Top 65%)7904(Top 145%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 70%
×21stories
+97ft-345ft

Overall

19931

Females

7407

F18-39

7407

5K→10K

3.1 - 6.2 mi

Top 69%
×5stories
+79ft-138ft

Overall

19488

Females

7167

F18-39

7167

10K→15K

6.2 - 9.3 mi

Top 70%
×3stories
+67ft-78ft

Overall

19931

Females

7407

F18-39

7407

15K→20K

9.3 - 12.4 mi

Top 69%
×5stories
+106ft-86ft

Overall

19544

Females

7230

F18-39

7230

20K→Half

12.4 - 13.1 mi

Top 68%
×2stories
+19ft-37ft

Overall

19434

Females

7155

F18-39

7155

Half→25K

13.1 - 15.5 mi

Top 71%
×4stories
+66ft-88ft

Overall

20217

Females

7656

F18-39

7656

25K→30K

15.5 - 18.6 mi

Top 66%
×9stories
+181ft-148ft

Overall

18871

Females

7051

F18-39

7051

30K→20M

18.6 - 20.0 mi

Top 65%
×5stories
+64ft-50ft

Overall

18466

Females

6988

F18-39

6988

20M→21M

20.0 - 21.0 mi

Top 74%
×8stories
+106ft-24ft

Overall

20937

Females

8419

F18-39

8419

21M→35K

21.0 - 21.8 mi

Top 69%
×7stories
+17ft-86ft

Overall

19645

Females

7793

F18-39

7793

35K→23M

21.8 - 23.0 mi

Top 71%
×5stories
+23ft-63ft

Overall

20304

Females

8201

F18-39

8201

23M→24M

23.0 - 24.0 mi

Top 81%
×6stories
+12ft-82ft

Overall

23080

Females

9673

F18-39

9673

24M→40K

24.0 - 24.9 mi

Top 70%
×1story
+6ft-20ft

Overall

19779

Females

8031

F18-39

8031

40K→25.2M

24.9 - 25.2 mi

Top 83%
×1story
+13ft-16ft

Overall

23671

Females

10003

F18-39

10003

25.2M→Finish

25.2 - 26.2 mi

Top 69%
×2stories
+22ft-21ft

Overall

19567

Females

7904

F18-39

7904

Passing Analysis

Category:
Athletes Passed
1608
Passed By
2009
Net Change
-401
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#19580
5K → 10K289210+79#19580#19501
10K → 15K160281-121#19501#19622
15K → 20K215197+18#19622#19604
20K → Half4130+11#19604#19593
Half → 25K120217-97#19593#19690
25K → 30K302123+179#19690#19511
30K → 20M13862+76#19511#19435
20M → 21M70199-129#19435#19564
21M → 35K4955-6#19564#19570
35K → 23M67131-64#19570#19634
23M → 24M26256-230#19634#19864
24M → 40K5460-6#19864#19870
40K → 25.2M7115-108#19870#19978
25.2M → Finish7073-3#19978#19981
TOTALS16082009-401
📊

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