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BOSTON MARATHON 2025

Lauren Len

Bib: 31402•F

NJ

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
28:31
Rank: #23158
Start → 5K
28:31 | 9:11/mi
10K· 6.21 mi
57:21
Rank: #23316 (-158)
5K → 10K
28:50 | 9:17/mi
15K· 9.32 mi
1:26:17
Rank: #23300 (+16)
10K → 15K
28:56 | 9:19/mi
20K· 12.43 mi
1:56:42
Rank: #23436 (-136)
15K → 20K
30:25 | 9:47/mi
Half· 13.11 mi
2:03:29
Rank: #23519 (-83)
20K → Half
6:47 | 9:57/mi
25K· 15.53 mi
2:28:33
Rank: #23591 (-72)
Half → 25K
25:04 | 10:20/mi
30K· 18.64 mi
3:00:38
Rank: #23384 (+207)
25K → 30K
32:05 | 10:20/mi
20M
3:15:08
Rank: #23305 (+79)
30K → 20M
14:30 | 10:40/mi
21M
3:26:31
Rank: #23246 (+59)
20M → 21M
11:23 | 11:23/mi
35K· 21.75 mi
3:34:18
Rank: #23234 (+12)
21M → 35K
7:47 | 10:24/mi
23M
3:47:32
Rank: #23180 (+54)
35K → 23M
13:14 | 10:34/mi
24M
3:57:42
Rank: #23111 (+69)
23M → 24M
10:10 | 10:10/mi
40K· 24.85 mi
4:06:39
Rank: #23056 (+55)
24M → 40K
8:57 | 10:28/mi
25.2M
4:10:31
Rank: #23037 (+19)
40K → 25.2M
3:52 | 11:13/mi
Finish· 26.22 mi
4:20:37
Rank: #23018 (+19)
25.2M → Finish
10:06 | 9:55/mi

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time2:03:29
Pace9:25 /mi
2nd Half
Distance13.11 mi
Time2:17:08
Pace10:28 /mi
📊Positive Split: 11.1% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:54:3828:319:1128:31
9:11
-
10K
6.21 mi12:23:2857:219:1428:50
9:17
+0:06
15K
9.32 mi12:52:241:26:179:1528:56
9:19
+0:02
20K
12.43 mi13:22:491:56:429:2330:25
9:47
+0:28
Half
13.11 mi13:29:362:03:299:256:47
9:57
+0:10
25K
15.53 mi13:54:402:28:339:3425:04
10:20
+0:23
30K
18.64 mi14:26:453:00:389:4132:05
10:20
0:00
20M
20.00 mi14:41:153:15:089:4514:30
10:40
+0:20
21M
21.00 mi14:52:383:26:319:5011:23
11:23
+0:43
35K
21.75 mi15:00:253:34:189:517:47
10:24
-0:59
23M
23.00 mi15:13:393:47:329:5413:14
10:34
+0:10
24M
24.00 mi15:23:493:57:429:5410:10
10:10
-0:24
40K
24.85 mi15:32:464:06:399:558:57
10:28
+0:18
25.2M
25.20 mi15:36:384:10:319:563:52
11:13
+0:45
Finish
26.22 mi15:46:444:20:379:5710:06
9:55
-1:18

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

9:11 /mi

Average Pace

9:57 /mi

Slowest Pace

11:23 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

2:13:35

51% of race

Time at Steady Pace

1:37:17

37% of race

Time at Slower Pace

29:45

11% of race

Average Pace: 9:56 /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 mi11:54:3828:319:1128:31
9:11
#23158
10K
6.21 mi12:23:2857:219:1428:50
9:17
#23316
15K
9.32 mi12:52:241:26:179:1528:56
9:19
#23300
20K
12.43 mi13:22:491:56:429:2330:25
9:47
#23436
Half
13.11 mi13:29:362:03:299:256:47
9:57
#23519
25K
15.53 mi13:54:402:28:339:3425:04
10:20
#23591
30K
18.64 mi14:26:453:00:389:4132:05
10:20
#23384
20M
20.00 mi14:41:153:15:089:4514:30
10:40
#23305
21M
21.00 mi14:52:383:26:319:5011:23
11:23
#23246
35K
21.75 mi15:00:253:34:189:517:47
10:24
#23234
23M
23.00 mi15:13:393:47:329:5413:14
10:34
#23180
24M
24.00 mi15:23:493:57:429:5410:10
10:10
#23111
40K
24.85 mi15:32:464:06:399:558:57
10:28
#23056
25.2M
25.20 mi15:36:384:10:319:563:52
11:13
#23037
Finish
26.22 mi15:46:444:20:379:5710:06
9:55
#23018
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF18-39Seg. OverallSeg. FemalesSeg. F18-39
5K3.11 mi3.11 mi231589253925323261(Top 82%)9240(Top 76%)9240(Top 169%)
10K6.21 mi3.10 mi23316-1589324-719324-7123467(Top 83%)9395(Top 77%)9395(Top 172%)
15K9.32 mi3.11 mi23300+169293+319293+3123261(Top 82%)9240(Top 76%)9240(Top 169%)
20K12.43 mi3.11 mi23436-1369361-689361-6823742(Top 84%)9569(Top 78%)9569(Top 175%)
Half13.11 mi0.68 mi23519-839412-519412-5124720(Top 87%)10117(Top 83%)10117(Top 185%)
25K15.53 mi2.42 mi23591-729474-629474-6224046(Top 85%)9764(Top 80%)9764(Top 179%)
30K18.64 mi3.11 mi23384+2079394+809394+8022540(Top 79%)9070(Top 74%)9070(Top 166%)
20M20.00 mi1.36 mi23305+799364+309364+3022889(Top 81%)9360(Top 77%)9360(Top 171%)
21M21.00 mi1.00 mi23246+599358+69358+622370(Top 79%)9179(Top 75%)9179(Top 168%)
35K21.75 mi0.75 mi23234+129362-49362-422973(Top 81%)9543(Top 78%)9543(Top 174%)
23M23.00 mi1.25 mi23180+549365-39365-322193(Top 78%)9168(Top 75%)9168(Top 168%)
24M24.00 mi1.00 mi23111+699352+139352+1321854(Top 77%)9066(Top 74%)9066(Top 166%)
40K24.85 mi0.85 mi23056+559337+159337+1521854(Top 77%)9127(Top 75%)9127(Top 167%)
25.2M25.20 mi0.35 mi23037+199329+89329+821321(Top 75%)8831(Top 72%)8831(Top 161%)
Finish26.22 mi1.02 mi23018+199329932922665(Top 80%)9500(Top 78%)9500(Top 174%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 82%
×21stories
+97ft-345ft

Overall

23261

Females

9240

F18-39

9240

5K→10K

3.1 - 6.2 mi

Top 83%
×5stories
+79ft-138ft

Overall

23467

Females

9395

F18-39

9395

10K→15K

6.2 - 9.3 mi

Top 82%
×3stories
+67ft-78ft

Overall

23261

Females

9240

F18-39

9240

15K→20K

9.3 - 12.4 mi

Top 84%
×5stories
+106ft-86ft

Overall

23742

Females

9569

F18-39

9569

20K→Half

12.4 - 13.1 mi

Top 87%
×2stories
+19ft-37ft

Overall

24720

Females

10117

F18-39

10117

Half→25K

13.1 - 15.5 mi

Top 85%
×4stories
+66ft-88ft

Overall

24046

Females

9764

F18-39

9764

25K→30K

15.5 - 18.6 mi

Top 79%
×9stories
+181ft-148ft

Overall

22540

Females

9070

F18-39

9070

30K→20M

18.6 - 20.0 mi

Top 81%
×5stories
+64ft-50ft

Overall

22889

Females

9360

F18-39

9360

20M→21M

20.0 - 21.0 mi

Top 79%
×8stories
+106ft-24ft

Overall

22370

Females

9179

F18-39

9179

21M→35K

21.0 - 21.8 mi

Top 81%
×7stories
+17ft-86ft

Overall

22973

Females

9543

F18-39

9543

35K→23M

21.8 - 23.0 mi

Top 78%
×5stories
+23ft-63ft

Overall

22193

Females

9168

F18-39

9168

23M→24M

23.0 - 24.0 mi

Top 77%
×6stories
+12ft-82ft

Overall

21854

Females

9066

F18-39

9066

24M→40K

24.0 - 24.9 mi

Top 77%
×1story
+6ft-20ft

Overall

21854

Females

9127

F18-39

9127

40K→25.2M

24.9 - 25.2 mi

Top 75%
×1story
+13ft-16ft

Overall

21321

Females

8831

F18-39

8831

25.2M→Finish

25.2 - 26.2 mi

Top 80%
×2stories
+22ft-21ft

Overall

22665

Females

9500

F18-39

9500

Passing Analysis

Category:
Athletes Passed
1436
Passed By
1296
Net Change
+140
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#23158
5K → 10K162320-158#23158#23316
10K → 15K188172+16#23316#23300
15K → 20K111247-136#23300#23436
20K → Half992-83#23436#23519
Half → 25K103175-72#23519#23591
25K → 30K27568+207#23591#23384
30K → 20M11233+79#23384#23305
20M → 21M9738+59#23305#23246
21M → 35K4129+12#23246#23234
35K → 23M10147+54#23234#23180
23M → 24M8617+69#23180#23111
24M → 40K7823+55#23111#23056
40K → 25.2M278+19#23056#23037
25.2M → Finish4627+19#23037#23018
TOTALS14361296+140
📊

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