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BOSTON MARATHON 2025

Leslie Althoff

Bib: 20327•F

IA

0:00
0:00
/ mi
Masters
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Overall
#0 / 28404
Gender (Female)
#0 / 12228
Top 49%
Masters (Masters Women)
#0 / 6759
Top 38%
Division (F40-44)
#0 / 1718
Race Day Weather
50°/40°F
broken clouds

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
24:56
Rank: #16805
Start → 5K
8:02/mi
24:56 split
10K· 6.21 mi
50:10
Rank: #17065 (-260)
5K → 10K
8:07/mi
25:14 split
15K· 9.32 mi
1:15:22
Rank: #16976 (+89)
10K → 15K
8:07/mi
25:12 split
20K· 12.43 mi
1:41:07
Rank: #16948 (+28)
15K → 20K
8:17/mi
25:45 split
Half· 13.11 mi
1:46:44
Rank: #16968 (-20)
20K → Half
8:14/mi
5:37 split
25K· 15.53 mi
2:08:03
Rank: #17236 (-268)
Half → 25K
8:48/mi
21:19 split
30K· 18.64 mi
2:35:19
Rank: #17033 (+203)
25K → 30K
8:47/mi
27:16 split
20M
2:48:00
Rank: #17133 (-100)
30K → 20M
9:20/mi
12:41 split
21M
2:57:49
Rank: #17145 (-12)
20M → 21M
9:49/mi
9:49 split
35K· 21.75 mi
3:04:33
Rank: #17187 (-42)
21M → 35K
9:00/mi
6:44 split
23M
3:15:59
Rank: #17157 (+30)
35K → 23M
9:08/mi
11:26 split
24M
3:25:08
Rank: #17201 (-44)
23M → 24M
9:09/mi
9:09 split
40K· 24.85 mi
3:32:52
Rank: #17170 (+31)
24M → 40K
9:03/mi
7:44 split
25.2M
3:36:09
Rank: #17124 (+46)
40K → 25.2M
9:31/mi
3:17 split
Finish· 26.22 mi
3:44:27
Rank: #17001 (+123)
25.2M → Finish
8:09/mi
8:18 split

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:46:44
Pace8:08 /mi
2nd Half
Distance13.11 mi
Time1:57:43
Pace8:59 /mi
📊Positive Split: 10.3% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:17:4724:568:0224:56
8:02
-
10K
6.21 mi11:43:0150:108:0425:14
8:07
+0:05
15K
9.32 mi12:08:131:15:228:0525:12
8:07
0:00
20K
12.43 mi12:33:581:41:078:0825:45
8:17
+0:10
Half
13.11 mi12:39:351:46:448:085:37
8:14
-0:03
25K
15.53 mi13:00:542:08:038:1521:19
8:48
+0:34
30K
18.64 mi13:28:102:35:198:2027:16
8:47
-0:01
20M
20.00 mi13:40:512:48:008:2412:41
9:20
+0:33
21M
21.00 mi13:50:402:57:498:289:49
9:49
+0:29
35K
21.75 mi13:57:243:04:338:296:44
9:00
-0:49
23M
23.00 mi14:08:503:15:598:3111:26
9:08
+0:08
24M
24.00 mi14:17:593:25:088:339:09
9:09
+0:01
40K
24.85 mi14:25:433:32:528:347:44
9:03
-0:06
25.2M
25.20 mi14:29:003:36:098:353:17
9:31
+0:28
Finish
26.22 mi14:37:183:44:278:348:18
8:09
-1:22

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

8:02 /mi

Average Pace

8:34 /mi

Slowest Pace

9:49 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

1:55:02

51% of race

Time at Steady Pace

1:03:03

28% of race

Time at Slower Pace

46:22

21% of race

Average Pace: 8:34 /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 mi11:17:4724:568:0224:56
8:02
#16805
10K
6.21 mi11:43:0150:108:0425:14
8:07
#17065
15K
9.32 mi12:08:131:15:228:0525:12
8:07
#16976
20K
12.43 mi12:33:581:41:078:0825:45
8:17
#16948
Half
13.11 mi12:39:351:46:448:085:37
8:14
#16968
25K
15.53 mi13:00:542:08:038:1521:19
8:48
#17236
30K
18.64 mi13:28:102:35:198:2027:16
8:47
#17033
20M
20.00 mi13:40:512:48:008:2412:41
9:20
#17133
21M
21.00 mi13:50:402:57:498:289:49
9:49
#17145
35K
21.75 mi13:57:243:04:338:296:44
9:00
#17187
23M
23.00 mi14:08:503:15:598:3111:26
9:08
#17157
24M
24.00 mi14:17:593:25:088:339:09
9:09
#17201
40K
24.85 mi14:25:433:32:528:347:44
9:03
#17170
25.2M
25.20 mi14:29:003:36:098:353:17
9:31
#17124
Finish
26.22 mi14:37:183:44:278:348:18
8:09
#17001
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF40-44Seg. OverallSeg. FemalesSeg. F40-44
5K3.11 mi3.11 mi168055636563616827(Top 59%)5630(Top 46%)5630(Top 328%)
10K6.21 mi3.10 mi17065-2605765-1295765-12917379(Top 61%)5927(Top 48%)5927(Top 345%)
15K9.32 mi3.11 mi16976+895699+665699+6616827(Top 59%)5630(Top 46%)5630(Top 328%)
20K12.43 mi3.11 mi16948+285712-135712-1316877(Top 59%)5709(Top 47%)5709(Top 332%)
Half13.11 mi0.68 mi16968-205727-155727-1517531(Top 62%)6057(Top 50%)6057(Top 353%)
25K15.53 mi2.42 mi17236-2685902-1755902-17518892(Top 67%)6914(Top 57%)6914(Top 402%)
30K18.64 mi3.11 mi17033+2035838+645838+6416474(Top 58%)5729(Top 47%)5729(Top 333%)
20M20.00 mi1.36 mi17133-1005925-875925-8718451(Top 65%)6973(Top 57%)6973(Top 406%)
21M21.00 mi1.00 mi17145-125963-385963-3817563(Top 62%)6562(Top 54%)6562(Top 382%)
35K21.75 mi0.75 mi17187-426014-516014-5118241(Top 64%)7033(Top 58%)7033(Top 409%)
23M23.00 mi1.25 mi17157+306027-136027-1317017(Top 60%)6460(Top 53%)6460(Top 376%)
24M24.00 mi1.00 mi17201-446077-506077-5018122(Top 64%)7096(Top 58%)7096(Top 413%)
40K24.85 mi0.85 mi17170+316085-86085-816592(Top 58%)6362(Top 52%)6362(Top 370%)
25.2M25.20 mi0.35 mi17124+466070+156070+1514768(Top 52%)5438(Top 44%)5438(Top 317%)
Finish26.22 mi1.02 mi17001+1236019+516019+5113943(Top 49%)4933(Top 40%)4933(Top 287%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 59%
×21story building
+97ft-345ft

Overall

16827

Females

5630

F40-44

5630

5K→10K

3.1 - 6.2 mi

Top 61%
×5story building
+79ft-138ft

Overall

17379

Females

5927

F40-44

5927

10K→15K

6.2 - 9.3 mi

Top 59%
×3story building
+67ft-78ft

Overall

16827

Females

5630

F40-44

5630

15K→20K

9.3 - 12.4 mi

Top 59%
×5story building
+106ft-86ft

Overall

16877

Females

5709

F40-44

5709

20K→Half

12.4 - 13.1 mi

Top 62%
×2story building
+19ft-37ft

Overall

17531

Females

6057

F40-44

6057

Half→25K

13.1 - 15.5 mi

Top 67%
×4story building
+66ft-88ft

Overall

18892

Females

6914

F40-44

6914

25K→30K

15.5 - 18.6 mi

Top 58%
×9story building
+181ft-148ft

Overall

16474

Females

5729

F40-44

5729

30K→20M

18.6 - 20.0 mi

Top 65%
×5story building
+64ft-50ft

Overall

18451

Females

6973

F40-44

6973

20M→21M

20.0 - 21.0 mi

Top 62%
×8story building
+106ft-24ft

Overall

17563

Females

6562

F40-44

6562

21M→35K

21.0 - 21.8 mi

Top 64%
×7story building
+17ft-86ft

Overall

18241

Females

7033

F40-44

7033

35K→23M

21.8 - 23.0 mi

Top 60%
×5story building
+23ft-63ft

Overall

17017

Females

6460

F40-44

6460

23M→24M

23.0 - 24.0 mi

Top 64%
×6story building
+12ft-82ft

Overall

18122

Females

7096

F40-44

7096

24M→40K

24.0 - 24.9 mi

Top 58%
×1story
+6ft-20ft

Overall

16592

Females

6362

F40-44

6362

40K→25.2M

24.9 - 25.2 mi

Top 52%
×1story
+13ft-16ft

Overall

14768

Females

5438

F40-44

5438

25.2M→Finish

25.2 - 26.2 mi

Top 49%
×2story building
+22ft-21ft

Overall

13943

Females

4933

F40-44

4933

Passing Analysis

Category:
Athletes Passed
1791
Passed By
1987
Net Change
-196
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#16805
5K → 10K201461-260#16805#17065
10K → 15K245156+89#17065#16976
15K → 20K206178+28#16976#16948
20K → Half2848-20#16948#16968
Half → 25K90358-268#16968#17236
25K → 30K316113+203#17236#17033
30K → 20M71171-100#17033#17133
20M → 21M109121-12#17133#17145
21M → 35K5395-42#17145#17187
35K → 23M12494+30#17187#17157
23M → 24M70114-44#17157#17201
24M → 40K7948+31#17201#17170
40K → 25.2M5711+46#17170#17124
25.2M → Finish14219+123#17124#17001
TOTALS17911987-196
📊

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