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BOSTON MARATHON 2025

Kerry Lannert

Bib: 16870•F

WA

0:00
0:00
/ mi
Masters
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Overall
#0 / 28404
Gender (Female)
#0 / 12228
Top 40%
Masters (Masters Women)
#0 / 6759
Top 26%
Division (F45-49)
#0 / 1813
Top 31%
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
8:02/mi
24:56
↑ 97↓ 3451.5%
10K· 6.21 mi
8:15/mi
50:33
↑ 79↓ 1380.4%
15K· 9.32 mi
8:14/mi
1:16:09
↑ 67↓ 78
20K· 12.43 mi
8:17/mi
1:41:54
↑ 106↓ 860.1%
Half· 13.11 mi
8:05/mi
1:47:25
↑ 19↓ 370.5%
25K· 15.53 mi
8:20/mi
2:07:38
↑ 66↓ 880.2%
30K· 18.64 mi
8:35/mi
2:34:18
↑ 181↓ 1480.2%
20M
8:38/mi
2:46:02
↑ 64↓ 500.2%
21M
8:50/mi
2:54:52
↑ 106↓ 241.6%
35K· 21.75 mi
7:45/mi
3:00:40
↑ 17↓ 861.7%
23M
8:13/mi
3:10:57
↑ 23↓ 630.6%
24M
8:02/mi
3:18:59
↓ 821.3%
40K· 24.85 mi
8:09/mi
3:25:57
↓ 200.3%
25.2M
8:48/mi
3:28:59
↑ 13↓ 160.2%
Finish· 26.22 mi
7:35/mi
3:36:43
↑ 22↓ 21

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:47:25
Pace8:12 /mi
2nd Half
Distance13.11 mi
Time1:49:18
Pace8:20 /mi
📊Positive Split: 1.8% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:58:4024:568:0224:56
8:02
-
10K
6.21 mi11:24:1750:338:0825:37
8:15
+0:13
15K
9.32 mi11:49:531:16:098:1025:36
8:14
-0:01
20K
12.43 mi12:15:381:41:548:1225:45
8:17
+0:03
Half
13.11 mi12:21:091:47:258:125:31
8:05
-0:12
25K
15.53 mi12:41:222:07:388:1320:13
8:20
+0:15
30K
18.64 mi13:08:022:34:188:1726:40
8:35
+0:15
20M
20.00 mi13:19:462:46:028:1811:44
8:38
+0:03
21M
21.00 mi13:28:362:54:528:208:50
8:50
+0:12
35K
21.75 mi13:34:243:00:408:185:48
7:45
-1:05
23M
23.00 mi13:44:413:10:578:1810:17
8:13
+0:28
24M
24.00 mi13:52:433:18:598:178:02
8:02
-0:11
40K
24.85 mi13:59:413:25:578:176:58
8:09
+0:07
25.2M
25.20 mi14:02:433:28:598:183:02
8:48
+0:39
Finish
26.22 mi14:10:273:36:438:167:44
7:35
-1:13

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

7:35 /mi

Average Pace

8:16 /mi

Slowest Pace

8:50 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

2:46:27

77% of race

Time at Steady Pace

50:16

23% of race

Time at Slower Pace

0:00

0% of race

Average Pace: 8:16 /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 mi10:58:4024:568:0224:56
8:02
#16797
10K
6.21 mi11:24:1750:338:0825:37
8:15
#17525
15K
9.32 mi11:49:531:16:098:1025:36
8:14
#17559
20K
12.43 mi12:15:381:41:548:1225:45
8:17
#17340
Half
13.11 mi12:21:091:47:258:125:31
8:05
#17284
25K
15.53 mi12:41:222:07:388:1320:13
8:20
#17053
30K
18.64 mi13:08:022:34:188:1726:40
8:35
#16704
20M
20.00 mi13:19:462:46:028:1811:44
8:38
#16522
21M
21.00 mi13:28:362:54:528:208:50
8:50
#16234
35K
21.75 mi13:34:243:00:408:185:48
7:45
#16028
23M
23.00 mi13:44:413:10:578:1810:17
8:13
#15715
24M
24.00 mi13:52:433:18:598:178:02
8:02
#15540
40K
24.85 mi13:59:413:25:578:176:58
8:09
#15351
25.2M
25.20 mi14:02:433:28:598:183:02
8:48
#15269
Finish
26.22 mi14:10:273:36:438:167:44
7:35
#15024
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF45-49Seg. OverallSeg. FemalesSeg. F45-49
5K3.11 mi3.11 mi167975628562817655(Top 62%)6109(Top 50%)6109(Top 337%)
10K6.21 mi3.10 mi17525-7286051-4236051-42318202(Top 64%)6420(Top 53%)6420(Top 354%)
15K9.32 mi3.11 mi17559-346046+56046+517655(Top 62%)6109(Top 50%)6109(Top 337%)
20K12.43 mi3.11 mi17340+2195940+1065940+10616867(Top 59%)5699(Top 47%)5699(Top 314%)
Half13.11 mi0.68 mi17284+565918+225918+2216550(Top 58%)5496(Top 45%)5496(Top 303%)
25K15.53 mi2.42 mi17053+2315799+1195799+11916169(Top 57%)5406(Top 44%)5406(Top 298%)
30K18.64 mi3.11 mi16704+3495638+1615638+16115289(Top 54%)5067(Top 41%)5067(Top 279%)
20M20.00 mi1.36 mi16522+1825567+715567+7114653(Top 52%)4852(Top 40%)4852(Top 268%)
21M21.00 mi1.00 mi16234+2885426+1415426+14112559(Top 44%)3906(Top 32%)3906(Top 215%)
35K21.75 mi0.75 mi16028+2065338+885338+8810548(Top 37%)2899(Top 24%)2899(Top 160%)
23M23.00 mi1.25 mi15715+3135199+1395199+13911480(Top 40%)3483(Top 28%)3483(Top 192%)
24M24.00 mi1.00 mi15540+1755111+885111+8811537(Top 41%)3599(Top 29%)3599(Top 199%)
40K24.85 mi0.85 mi15351+1895043+685043+6811275(Top 40%)3559(Top 29%)3559(Top 196%)
25.2M25.20 mi0.35 mi15269+825011+325011+3210732(Top 38%)3388(Top 28%)3388(Top 187%)
Finish26.22 mi1.02 mi15024+2454886+1254886+1259896(Top 35%)2955(Top 24%)2955(Top 163%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 62%
×21story building
+97ft-345ft

Overall

17655

Females

6109

F45-49

6109

5K→10K

3.1 - 6.2 mi

Top 64%
×5story building
+79ft-138ft

Overall

18202

Females

6420

F45-49

6420

10K→15K

6.2 - 9.3 mi

Top 62%
×3story building
+67ft-78ft

Overall

17655

Females

6109

F45-49

6109

15K→20K

9.3 - 12.4 mi

Top 59%
×5story building
+106ft-86ft

Overall

16867

Females

5699

F45-49

5699

20K→Half

12.4 - 13.1 mi

Top 58%
×2story building
+19ft-37ft

Overall

16550

Females

5496

F45-49

5496

Half→25K

13.1 - 15.5 mi

Top 57%
×4story building
+66ft-88ft

Overall

16169

Females

5406

F45-49

5406

25K→30K

15.5 - 18.6 mi

Top 54%
×9story building
+181ft-148ft

Overall

15289

Females

5067

F45-49

5067

30K→20M

18.6 - 20.0 mi

Top 52%
×5story building
+64ft-50ft

Overall

14653

Females

4852

F45-49

4852

20M→21M

20.0 - 21.0 mi

Top 44%
×8story building
+106ft-24ft

Overall

12559

Females

3906

F45-49

3906

21M→35K

21.0 - 21.8 mi

Top 37%
×7story building
+17ft-86ft

Overall

10548

Females

2899

F45-49

2899

35K→23M

21.8 - 23.0 mi

Top 40%
×5story building
+23ft-63ft

Overall

11480

Females

3483

F45-49

3483

23M→24M

23.0 - 24.0 mi

Top 41%
×6story building
+12ft-82ft

Overall

11537

Females

3599

F45-49

3599

24M→40K

24.0 - 24.9 mi

Top 40%
×1story
+6ft-20ft

Overall

11275

Females

3559

F45-49

3559

40K→25.2M

24.9 - 25.2 mi

Top 38%
×1story
+13ft-16ft

Overall

10732

Females

3388

F45-49

3388

25.2M→Finish

25.2 - 26.2 mi

Top 35%
×2story building
+22ft-21ft

Overall

9896

Females

2955

F45-49

2955

Passing Analysis

Category:
Athletes Passed
3062
Passed By
1289
Net Change
+1773
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#16797
5K → 10K91819-728#16797#17525
10K → 15K188222-34#17525#17559
15K → 20K29980+219#17559#17340
20K → Half6711+56#17340#17284
Half → 25K27645+231#17284#17053
25K → 30K41465+349#17053#16704
30K → 20M20523+182#16704#16522
20M → 21M2957+288#16522#16234
21M → 35K2071+206#16234#16028
35K → 23M3174+313#16028#15715
23M → 24M1783+175#15715#15540
24M → 40K1923+189#15540#15351
40K → 25.2M842+82#15351#15269
25.2M → Finish2494+245#15269#15024
TOTALS30621289+1773
📊

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