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BOSTON MARATHON 2025

Yee Chen Lee

Bib: 21705•F

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

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
28:05
Rank: #22599
Start → 5K
28:05 | 9:02/mi
10K· 6.21 mi
57:09
Rank: #23196 (-597)
5K → 10K
29:04 | 9:21/mi
15K· 9.32 mi
1:26:29
Rank: #23366 (-170)
10K → 15K
29:20 | 9:26/mi
20K· 12.43 mi
1:56:31
Rank: #23373 (-7)
15K → 20K
30:02 | 9:40/mi
Half· 13.11 mi
2:03:12
Rank: #23439 (-66)
20K → Half
6:41 | 9:48/mi
25K· 15.53 mi
2:26:31
Rank: #23211 (+228)
Half → 25K
23:19 | 9:37/mi
30K· 18.64 mi
2:59:39
Rank: #23209 (+2)
25K → 30K
33:08 | 10:40/mi
20M
3:13:18
Rank: #23048 (+161)
30K → 20M
13:39 | 10:03/mi
21M
3:24:34
Rank: #22979 (+69)
20M → 21M
11:16 | 11:16/mi
35K· 21.75 mi
3:31:56
Rank: #22928 (+51)
21M → 35K
7:22 | 9:51/mi
23M
3:44:36
Rank: #22802 (+126)
35K → 23M
12:40 | 10:07/mi
24M
3:54:28
Rank: #22696 (+106)
23M → 24M
9:52 | 9:52/mi
40K· 24.85 mi
4:03:18
Rank: #22642 (+54)
24M → 40K
8:50 | 10:20/mi
25.2M
4:07:01
Rank: #22604 (+38)
40K → 25.2M
3:43 | 10:47/mi
Finish· 26.22 mi
4:16:56
Rank: #22588 (+16)
25.2M → Finish
9:55 | 9:44/mi

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time2:03:12
Pace9:24 /mi
2nd Half
Distance13.11 mi
Time2:13:44
Pace10:12 /mi
📊Positive Split: 8.5% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:30:2928:059:0228:05
9:02
-
10K
6.21 mi11:59:3357:099:1229:04
9:21
+0:19
15K
9.32 mi12:28:531:26:299:1729:20
9:26
+0:05
20K
12.43 mi12:58:551:56:319:2330:02
9:40
+0:14
Half
13.11 mi13:05:362:03:129:246:41
9:48
+0:08
25K
15.53 mi13:28:552:26:319:2623:19
9:37
-0:11
30K
18.64 mi14:02:032:59:399:3833:08
10:40
+1:03
20M
20.00 mi14:15:423:13:189:4013:39
10:03
-0:37
21M
21.00 mi14:26:583:24:349:4411:16
11:16
+1:13
35K
21.75 mi14:34:203:31:569:457:22
9:51
-1:25
23M
23.00 mi14:47:003:44:369:4612:40
10:07
+0:16
24M
24.00 mi14:56:523:54:289:469:52
9:52
-0:15
40K
24.85 mi15:05:424:03:189:478:50
10:20
+0:28
25.2M
25.20 mi15:09:254:07:019:483:43
10:47
+0:27
Finish
26.22 mi15:19:204:16:569:489:55
9:44
-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

9:02 /mi

Average Pace

9:48 /mi

Slowest Pace

11:16 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

1:26:29

34% of race

Time at Steady Pace

1:53:30

44% of race

Time at Slower Pace

56:57

22% of race

Average Pace: 9:48 /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 mi11:30:2928:059:0228:05
9:02
#22599
10K
6.21 mi11:59:3357:099:1229:04
9:21
#23196
15K
9.32 mi12:28:531:26:299:1729:20
9:26
#23366
20K
12.43 mi12:58:551:56:319:2330:02
9:40
#23373
Half
13.11 mi13:05:362:03:129:246:41
9:48
#23439
25K
15.53 mi13:28:552:26:319:2623:19
9:37
#23211
30K
18.64 mi14:02:032:59:399:3833:08
10:40
#23209
20M
20.00 mi14:15:423:13:189:4013:39
10:03
#23048
21M
21.00 mi14:26:583:24:349:4411:16
11:16
#22979
35K
21.75 mi14:34:203:31:569:457:22
9:51
#22928
23M
23.00 mi14:47:003:44:369:4612:40
10:07
#22802
24M
24.00 mi14:56:523:54:289:469:52
9:52
#22696
40K
24.85 mi15:05:424:03:189:478:50
10:20
#22642
25.2M
25.20 mi15:09:254:07:019:483:43
10:47
#22604
Finish
26.22 mi15:19:204:16:569:489:55
9:44
#22588
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF45-49Seg. OverallSeg. FemalesSeg. F45-49
5K3.11 mi3.11 mi225998958895823582(Top 83%)9424(Top 77%)9424(Top 520%)
10K6.21 mi3.10 mi23196-5979254-2969254-29623708(Top 83%)9522(Top 78%)9522(Top 525%)
15K9.32 mi3.11 mi23366-1709330-769330-7623582(Top 83%)9424(Top 77%)9424(Top 520%)
20K12.43 mi3.11 mi23373-79327+39327+323397(Top 82%)9365(Top 77%)9365(Top 517%)
Half13.11 mi0.68 mi23439-669361-349361-3424370(Top 86%)9914(Top 81%)9914(Top 547%)
25K15.53 mi2.42 mi23211+2289246+1159246+11522258(Top 78%)8793(Top 72%)8793(Top 485%)
30K18.64 mi3.11 mi23209+29299-539299-5323313(Top 82%)9500(Top 78%)9500(Top 524%)
20M20.00 mi1.36 mi23048+1619239+609239+6021122(Top 74%)8428(Top 69%)8428(Top 465%)
21M21.00 mi1.00 mi22979+699217+229217+2222096(Top 78%)9023(Top 74%)9023(Top 498%)
35K21.75 mi0.75 mi22928+519203+149203+1421487(Top 76%)8771(Top 72%)8771(Top 484%)
23M23.00 mi1.25 mi22802+1269154+499154+4920885(Top 74%)8500(Top 70%)8500(Top 469%)
24M24.00 mi1.00 mi22696+1069118+369118+3620973(Top 74%)8591(Top 70%)8591(Top 474%)
40K24.85 mi0.85 mi22642+549110+89110+821491(Top 76%)8925(Top 73%)8925(Top 492%)
25.2M25.20 mi0.35 mi22604+389097+139097+1320026(Top 71%)8187(Top 67%)8187(Top 452%)
Finish26.22 mi1.02 mi22588+169107-109107-1022039(Top 78%)9176(Top 75%)9176(Top 506%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 83%
×21stories
+97ft-345ft

Overall

23582

Females

9424

F45-49

9424

5K→10K

3.1 - 6.2 mi

Top 83%
×5stories
+79ft-138ft

Overall

23708

Females

9522

F45-49

9522

10K→15K

6.2 - 9.3 mi

Top 83%
×3stories
+67ft-78ft

Overall

23582

Females

9424

F45-49

9424

15K→20K

9.3 - 12.4 mi

Top 82%
×5stories
+106ft-86ft

Overall

23397

Females

9365

F45-49

9365

20K→Half

12.4 - 13.1 mi

Top 86%
×2stories
+19ft-37ft

Overall

24370

Females

9914

F45-49

9914

Half→25K

13.1 - 15.5 mi

Top 78%
×4stories
+66ft-88ft

Overall

22258

Females

8793

F45-49

8793

25K→30K

15.5 - 18.6 mi

Top 82%
×9stories
+181ft-148ft

Overall

23313

Females

9500

F45-49

9500

30K→20M

18.6 - 20.0 mi

Top 74%
×5stories
+64ft-50ft

Overall

21122

Females

8428

F45-49

8428

20M→21M

20.0 - 21.0 mi

Top 78%
×8stories
+106ft-24ft

Overall

22096

Females

9023

F45-49

9023

21M→35K

21.0 - 21.8 mi

Top 76%
×7stories
+17ft-86ft

Overall

21487

Females

8771

F45-49

8771

35K→23M

21.8 - 23.0 mi

Top 74%
×5stories
+23ft-63ft

Overall

20885

Females

8500

F45-49

8500

23M→24M

23.0 - 24.0 mi

Top 74%
×6stories
+12ft-82ft

Overall

20973

Females

8591

F45-49

8591

24M→40K

24.0 - 24.9 mi

Top 76%
×1story
+6ft-20ft

Overall

21491

Females

8925

F45-49

8925

40K→25.2M

24.9 - 25.2 mi

Top 71%
×1story
+13ft-16ft

Overall

20026

Females

8187

F45-49

8187

25.2M→Finish

25.2 - 26.2 mi

Top 78%
×2stories
+22ft-21ft

Overall

22039

Females

9176

F45-49

9176

Passing Analysis

Category:
Athletes Passed
1535
Passed By
1524
Net Change
+11
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#22599
5K → 10K68665-597#22599#23196
10K → 15K117287-170#23196#23366
15K → 20K149156-7#23366#23373
20K → Half1379-66#23373#23439
Half → 25K25426+228#23439#23211
25K → 30K172170+2#23211#23209
30K → 20M17413+161#23209#23048
20M → 21M10334+69#23048#22979
21M → 35K7019+51#22979#22928
35K → 23M1359+126#22928#22802
23M → 24M11610+106#22802#22696
24M → 40K7420+54#22696#22642
40K → 25.2M391+38#22642#22604
25.2M → Finish5135+16#22604#22588
TOTALS15351524+11
📊

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