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BOSTON MARATHON 2025

Katherine Knill

Bib: 21702•F

0:00
0:00
/ mi
Masters
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Overall
#0 / 28404
Gender (Female)
#0 / 12228
Top 46%
Masters (Masters Women)
#0 / 6759
Top 34%
Division (F55-59)
#0 / 994
Top 14%
Race Day Weather
50°/40°F
broken clouds

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
25:20
Rank: #17785
Start → 5K
25:20 | 8:09/mi
10K· 6.21 mi
50:54
Rank: #17933 (-148)
5K → 10K
25:34 | 8:14/mi
15K· 9.32 mi
1:16:24
Rank: #17740 (+193)
10K → 15K
25:30 | 8:12/mi
20K· 12.43 mi
1:41:50
Rank: #17311 (+429)
15K → 20K
25:26 | 8:11/mi
Half· 13.11 mi
1:47:21
Rank: #17259 (+52)
20K → Half
5:31 | 8:05/mi
25K· 15.53 mi
2:07:33
Rank: #17021 (+238)
Half → 25K
20:12 | 8:20/mi
30K· 18.64 mi
2:34:36
Rank: #16800 (+221)
25K → 30K
27:03 | 8:42/mi
20M
2:46:53
Rank: #16792 (+8)
30K → 20M
12:17 | 9:02/mi
21M
2:56:31
Rank: #16743 (+49)
20M → 21M
9:38 | 9:38/mi
35K· 21.75 mi
3:02:51
Rank: #16671 (+72)
21M → 35K
6:20 | 8:28/mi
23M
3:13:54
Rank: #16538 (+133)
35K → 23M
11:03 | 8:50/mi
24M
3:22:29
Rank: #16462 (+76)
23M → 24M
8:35 | 8:35/mi
40K· 24.85 mi
3:29:56
Rank: #16371 (+91)
24M → 40K
7:27 | 8:43/mi
25.2M
3:33:15
Rank: #16356 (+15)
40K → 25.2M
3:19 | 9:37/mi
Finish· 26.22 mi
3:42:01
Rank: #16369 (-13)
25.2M → Finish
8:46 | 8:36/mi

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:47:21
Pace8:11 /mi
2nd Half
Distance13.11 mi
Time1:54:40
Pace8:45 /mi
📊Positive Split: 6.8% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:20:5225:208:0925:20
8:09
-
10K
6.21 mi11:46:2650:548:1125:34
8:14
+0:05
15K
9.32 mi12:11:561:16:248:1225:30
8:12
-0:02
20K
12.43 mi12:37:221:41:508:1225:26
8:11
-0:01
Half
13.11 mi12:42:531:47:218:115:31
8:05
-0:06
25K
15.53 mi13:03:052:07:338:1320:12
8:20
+0:15
30K
18.64 mi13:30:082:34:368:1827:03
8:42
+0:22
20M
20.00 mi13:42:252:46:538:2112:17
9:02
+0:20
21M
21.00 mi13:52:032:56:318:249:38
9:38
+0:36
35K
21.75 mi13:58:233:02:518:246:20
8:28
-1:10
23M
23.00 mi14:09:263:13:548:2611:03
8:50
+0:22
24M
24.00 mi14:18:013:22:298:268:35
8:35
-0:15
40K
24.85 mi14:25:283:29:568:277:27
8:43
+0:08
25.2M
25.20 mi14:28:473:33:158:283:19
9:37
+0:54
Finish
26.22 mi14:37:333:42:018:288:46
8:36
-1:01

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

8:05 /mi

Average Pace

8:28 /mi

Slowest Pace

9:38 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

3:16:47

89% of race

Time at Steady Pace

12:17

6% of race

Time at Slower Pace

12:57

6% of race

Average Pace: 8:28 /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 mi11:20:5225:208:0925:20
8:09
#17785
10K
6.21 mi11:46:2650:548:1125:34
8:14
#17933
15K
9.32 mi12:11:561:16:248:1225:30
8:12
#17740
20K
12.43 mi12:37:221:41:508:1225:26
8:11
#17311
Half
13.11 mi12:42:531:47:218:115:31
8:05
#17259
25K
15.53 mi13:03:052:07:338:1320:12
8:20
#17021
30K
18.64 mi13:30:082:34:368:1827:03
8:42
#16800
20M
20.00 mi13:42:252:46:538:2112:17
9:02
#16792
21M
21.00 mi13:52:032:56:318:249:38
9:38
#16743
35K
21.75 mi13:58:233:02:518:246:20
8:28
#16671
23M
23.00 mi14:09:263:13:548:2611:03
8:50
#16538
24M
24.00 mi14:18:013:22:298:268:35
8:35
#16462
40K
24.85 mi14:25:283:29:568:277:27
8:43
#16371
25.2M
25.20 mi14:28:473:33:158:283:19
9:37
#16356
Finish
26.22 mi14:37:333:42:018:288:46
8:36
#16369
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF55-59Seg. OverallSeg. FemalesSeg. F55-59
5K3.11 mi3.11 mi177856206620617443(Top 61%)5980(Top 49%)5980(Top 602%)
10K6.21 mi3.10 mi17933-1486282-766282-7618110(Top 64%)6366(Top 52%)6366(Top 640%)
15K9.32 mi3.11 mi17740+1936172+1106172+11017443(Top 61%)5980(Top 49%)5980(Top 602%)
20K12.43 mi3.11 mi17311+4295923+2495923+24916242(Top 57%)5353(Top 44%)5353(Top 539%)
Half13.11 mi0.68 mi17259+525901+225901+2216578(Top 58%)5524(Top 45%)5524(Top 556%)
25K15.53 mi2.42 mi17021+2385777+1245777+12416135(Top 57%)5391(Top 44%)5391(Top 542%)
30K18.64 mi3.11 mi16800+2215696+815696+8116043(Top 56%)5486(Top 45%)5486(Top 552%)
20M20.00 mi1.36 mi16792+85712-165712-1617019(Top 60%)6141(Top 50%)6141(Top 618%)
21M21.00 mi1.00 mi16743+495726-145726-1416715(Top 59%)6097(Top 50%)6097(Top 613%)
35K21.75 mi0.75 mi16671+725706+205706+2015290(Top 54%)5401(Top 44%)5401(Top 543%)
23M23.00 mi1.25 mi16538+1335658+485658+4815261(Top 54%)5471(Top 45%)5471(Top 550%)
24M24.00 mi1.00 mi16462+765643+155643+1515090(Top 53%)5431(Top 44%)5431(Top 546%)
40K24.85 mi0.85 mi16371+915618+255618+2514725(Top 52%)5379(Top 44%)5379(Top 541%)
25.2M25.20 mi0.35 mi16356+155619-15619-115232(Top 54%)5673(Top 46%)5673(Top 571%)
Finish26.22 mi1.02 mi16369-135648-295648-2916874(Top 59%)6496(Top 53%)6496(Top 654%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 61%
×21stories
+97ft-345ft

Overall

17443

Females

5980

F55-59

5980

5K→10K

3.1 - 6.2 mi

Top 64%
×5stories
+79ft-138ft

Overall

18110

Females

6366

F55-59

6366

10K→15K

6.2 - 9.3 mi

Top 61%
×3stories
+67ft-78ft

Overall

17443

Females

5980

F55-59

5980

15K→20K

9.3 - 12.4 mi

Top 57%
×5stories
+106ft-86ft

Overall

16242

Females

5353

F55-59

5353

20K→Half

12.4 - 13.1 mi

Top 58%
×2stories
+19ft-37ft

Overall

16578

Females

5524

F55-59

5524

Half→25K

13.1 - 15.5 mi

Top 57%
×4stories
+66ft-88ft

Overall

16135

Females

5391

F55-59

5391

25K→30K

15.5 - 18.6 mi

Top 56%
×9stories
+181ft-148ft

Overall

16043

Females

5486

F55-59

5486

30K→20M

18.6 - 20.0 mi

Top 60%
×5stories
+64ft-50ft

Overall

17019

Females

6141

F55-59

6141

20M→21M

20.0 - 21.0 mi

Top 59%
×8stories
+106ft-24ft

Overall

16715

Females

6097

F55-59

6097

21M→35K

21.0 - 21.8 mi

Top 54%
×7stories
+17ft-86ft

Overall

15290

Females

5401

F55-59

5401

35K→23M

21.8 - 23.0 mi

Top 54%
×5stories
+23ft-63ft

Overall

15261

Females

5471

F55-59

5471

23M→24M

23.0 - 24.0 mi

Top 53%
×6stories
+12ft-82ft

Overall

15090

Females

5431

F55-59

5431

24M→40K

24.0 - 24.9 mi

Top 52%
×1story
+6ft-20ft

Overall

14725

Females

5379

F55-59

5379

40K→25.2M

24.9 - 25.2 mi

Top 54%
×1story
+13ft-16ft

Overall

15232

Females

5673

F55-59

5673

25.2M→Finish

25.2 - 26.2 mi

Top 59%
×2stories
+22ft-21ft

Overall

16874

Females

6496

F55-59

6496

Passing Analysis

Category:
Athletes Passed
2499
Passed By
1083
Net Change
+1416
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#17785
5K → 10K232380-148#17785#17933
10K → 15K294101+193#17933#17740
15K → 20K44920+429#17740#17311
20K → Half619+52#17311#17259
Half → 25K28648+238#17259#17021
25K → 30K336115+221#17021#16800
30K → 20M10294+8#16800#16792
20M → 21M13283+49#16792#16743
21M → 35K9826+72#16743#16671
35K → 23M17239+133#16671#16538
23M → 24M11943+76#16538#16462
24M → 40K11423+91#16462#16371
40K → 25.2M3722+15#16371#16356
25.2M → Finish6780-13#16356#16369
TOTALS24991083+1416
📊

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