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BOSTON MARATHON 2025

Thu Le Mai

Bib: 22823•F

CA

0:00
0:00
/ mi
Masters
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Overall
#0 / 28404
Gender (Female)
#0 / 12228
Masters (Masters Women)
#0 / 6759
Division (F50-54)
#0 / 1303
Race Day Weather
50°/40°F
broken clouds

⏱️ Race Timeline

Course Elevation
7–469 ft
≈
×2stacked redwood trees
•▲ 890 ft climb · ▼ 1342 ft descent
Ribbon color based on
FasterSteadySlower· vs. your average pace
Start
0:00
Race begins
5K· 3.11 mi
8:58/mi
27:52
↑ 97↓ 3451.5%
10K· 6.21 mi
9:12/mi
56:26
↑ 79↓ 1380.4%
15K· 9.32 mi
9:14/mi
1:25:07
↑ 67↓ 78
20K· 12.43 mi
9:17/mi
1:53:59
↑ 106↓ 860.1%
Half· 13.11 mi
9:02/mi
2:00:09
↑ 19↓ 370.5%
25K· 15.53 mi
9:25/mi
2:22:59
↑ 66↓ 880.2%
30K· 18.64 mi
9:45/mi
2:53:16
↑ 181↓ 1480.2%
20M
10:06/mi
3:07:00
↑ 64↓ 500.2%
21M
10:55/mi
3:17:55
↑ 106↓ 241.6%
35K· 21.75 mi
9:13/mi
3:24:49
↑ 17↓ 861.7%
23M
10:14/mi
3:37:38
↑ 23↓ 630.6%
24M
10:04/mi
3:47:42
↓ 821.3%
40K· 24.85 mi
10:28/mi
3:56:39
↓ 200.3%
25.2M
12:37/mi
4:01:00
↑ 13↓ 160.2%
Finish· 26.22 mi
10:41/mi
4:11:53
↑ 22↓ 21

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time2:00:09
Pace9:10 /mi
2nd Half
Distance13.11 mi
Time2:11:44
Pace10:03 /mi
📊Positive Split: 9.6% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:24:2127:528:5827:52
8:58
-
10K
6.21 mi11:52:5556:269:0528:34
9:12
+0:14
15K
9.32 mi12:21:361:25:079:0828:41
9:14
+0:02
20K
12.43 mi12:50:281:53:599:1028:52
9:17
+0:03
Half
13.11 mi12:56:382:00:099:106:10
9:02
-0:15
25K
15.53 mi13:19:282:22:599:1222:50
9:25
+0:23
30K
18.64 mi13:49:452:53:169:1830:17
9:45
+0:20
20M
20.00 mi14:03:293:07:009:2113:44
10:06
+0:21
21M
21.00 mi14:14:243:17:559:2510:55
10:55
+0:49
35K
21.75 mi14:21:183:24:499:256:54
9:13
-1:42
23M
23.00 mi14:34:073:37:389:2812:49
10:14
+1:01
24M
24.00 mi14:44:113:47:429:2910:04
10:04
-0:10
40K
24.85 mi14:53:083:56:399:318:57
10:28
+0:24
25.2M
25.20 mi14:57:294:01:009:344:21
12:37
+2:09
Finish
26.22 mi15:08:224:11:539:3710:53
10:41
-1:56

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

8:58 /mi

Average Pace

9:37 /mi

Slowest Pace

12:37 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

1:38:11

39% of race

Time at Steady Pace

1:45:47

42% of race

Time at Slower Pace

47:55

19% of race

Average Pace: 9:36 /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 mi11:24:2127:528:5827:52
8:58
#22303
10K
6.21 mi11:52:5556:269:0528:34
9:12
#22747
15K
9.32 mi12:21:361:25:079:0828:41
9:14
#22851
20K
12.43 mi12:50:281:53:599:1028:52
9:17
#22665
Half
13.11 mi12:56:382:00:099:106:10
9:02
#22632
25K
15.53 mi13:19:282:22:599:1222:50
9:25
#22449
30K
18.64 mi13:49:452:53:169:1830:17
9:45
#22143
20M
20.00 mi14:03:293:07:009:2113:44
10:06
#22079
21M
21.00 mi14:14:243:17:559:2510:55
10:55
#21999
35K
21.75 mi14:21:183:24:499:256:54
9:13
#21896
23M
23.00 mi14:34:073:37:389:2812:49
10:14
#21830
24M
24.00 mi14:44:113:47:429:2910:04
10:04
#21810
40K
24.85 mi14:53:083:56:399:318:57
10:28
#21809
25.2M
25.20 mi14:57:294:01:009:344:21
12:37
#21860
Finish
26.22 mi15:08:224:11:539:3710:53
10:41
#21975
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF50-54Seg. OverallSeg. FemalesSeg. F50-54
5K3.11 mi3.11 mi223038798879822976(Top 81%)9090(Top 74%)9090(Top 698%)
10K6.21 mi3.10 mi22747-4449016-2189016-21823183(Top 82%)9227(Top 75%)9227(Top 708%)
15K9.32 mi3.11 mi22851-1049038-229038-2222976(Top 81%)9090(Top 74%)9090(Top 698%)
20K12.43 mi3.11 mi22665+1868937+1018937+10122251(Top 78%)8725(Top 71%)8725(Top 670%)
Half13.11 mi0.68 mi22632+338918+198918+1922015(Top 78%)8620(Top 70%)8620(Top 662%)
25K15.53 mi2.42 mi22449+1838838+808838+8021620(Top 76%)8440(Top 69%)8440(Top 648%)
30K18.64 mi3.11 mi22143+3068704+1348704+13420838(Top 73%)8142(Top 67%)8142(Top 625%)
20M20.00 mi1.36 mi22079+648683+218683+2121313(Top 75%)8527(Top 70%)8527(Top 654%)
21M21.00 mi1.00 mi21999+808665+188665+1821184(Top 75%)8545(Top 70%)8545(Top 656%)
35K21.75 mi0.75 mi21896+1038621+448621+4419312(Top 68%)7621(Top 62%)7621(Top 585%)
23M23.00 mi1.25 mi21830+668625-48625-421254(Top 75%)8684(Top 71%)8684(Top 666%)
24M24.00 mi1.00 mi21810+208636-118636-1121548(Top 76%)8880(Top 73%)8880(Top 682%)
40K24.85 mi0.85 mi21809+18658-228658-2221846(Top 77%)9119(Top 75%)9119(Top 700%)
25.2M25.20 mi0.35 mi21860-518692-348692-3424424(Top 86%)10382(Top 85%)10382(Top 797%)
Finish26.22 mi1.02 mi21975-1158765-738765-7324696(Top 87%)10504(Top 86%)10504(Top 806%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 81%
×21story building
+97ft-345ft

Overall

22976

Females

9090

F50-54

9090

5K→10K

3.1 - 6.2 mi

Top 82%
×5story building
+79ft-138ft

Overall

23183

Females

9227

F50-54

9227

10K→15K

6.2 - 9.3 mi

Top 81%
×3story building
+67ft-78ft

Overall

22976

Females

9090

F50-54

9090

15K→20K

9.3 - 12.4 mi

Top 78%
×5story building
+106ft-86ft

Overall

22251

Females

8725

F50-54

8725

20K→Half

12.4 - 13.1 mi

Top 78%
×2story building
+19ft-37ft

Overall

22015

Females

8620

F50-54

8620

Half→25K

13.1 - 15.5 mi

Top 76%
×4story building
+66ft-88ft

Overall

21620

Females

8440

F50-54

8440

25K→30K

15.5 - 18.6 mi

Top 73%
×9story building
+181ft-148ft

Overall

20838

Females

8142

F50-54

8142

30K→20M

18.6 - 20.0 mi

Top 75%
×5story building
+64ft-50ft

Overall

21313

Females

8527

F50-54

8527

20M→21M

20.0 - 21.0 mi

Top 75%
×8story building
+106ft-24ft

Overall

21184

Females

8545

F50-54

8545

21M→35K

21.0 - 21.8 mi

Top 68%
×7story building
+17ft-86ft

Overall

19312

Females

7621

F50-54

7621

35K→23M

21.8 - 23.0 mi

Top 75%
×5story building
+23ft-63ft

Overall

21254

Females

8684

F50-54

8684

23M→24M

23.0 - 24.0 mi

Top 76%
×6story building
+12ft-82ft

Overall

21548

Females

8880

F50-54

8880

24M→40K

24.0 - 24.9 mi

Top 77%
×1story
+6ft-20ft

Overall

21846

Females

9119

F50-54

9119

40K→25.2M

24.9 - 25.2 mi

Top 86%
×1story
+13ft-16ft

Overall

24424

Females

10382

F50-54

10382

25.2M→Finish

25.2 - 26.2 mi

Top 87%
×2story building
+22ft-21ft

Overall

24696

Females

10504

F50-54

10504

Passing Analysis

Category:
Athletes Passed
1754
Passed By
1426
Net Change
+328
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#22303
5K → 10K106550-444#22303#22747
10K → 15K131235-104#22747#22851
15K → 20K27892+186#22851#22665
20K → Half5421+33#22665#22632
Half → 25K23451+183#22632#22449
25K → 30K34943+306#22449#22143
30K → 20M11955+64#22143#22079
20M → 21M12141+80#22079#21999
21M → 35K1085+103#21999#21896
35K → 23M11852+66#21896#21830
23M → 24M5535+20#21830#21810
24M → 40K5251+1#21810#21809
40K → 25.2M1061-51#21809#21860
25.2M → Finish19134-115#21860#21975
TOTALS17541426+328
📊

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