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BOSTON MARATHON 2025

Katie Best

Bib: 16458•F

0:00
0:00
/ mi
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Overall
#0 / 28404
Gender (Female)
#0 / 12228
Division (F18-39)
#0 / 5469
Race Day Weather
50°/40°F
broken clouds

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
24:05
Rank: #14417
Start → 5K
24:05 | 7:45/mi
10K· 6.21 mi
48:18
Rank: #14536 (-119)
5K → 10K
24:13 | 7:48/mi
15K· 9.32 mi
1:13:29
Rank: #15369 (-833)
10K → 15K
25:11 | 8:06/mi
20K· 12.43 mi
1:39:50
Rank: #16198 (-829)
15K → 20K
26:21 | 8:29/mi
Half· 13.11 mi
1:45:40
Rank: #16389 (-191)
20K → Half
5:50 | 8:33/mi
25K· 15.53 mi
2:09:56
Rank: #18017 (-1628)
Half → 25K
24:16 | 10:01/mi
30K· 18.64 mi
2:42:00
Rank: #19285 (-1268)
25K → 30K
32:04 | 10:19/mi
20M
2:55:27
Rank: #19423 (-138)
30K → 20M
13:27 | 9:54/mi
21M
3:08:22
Rank: #20037 (-614)
20M → 21M
12:55 | 12:55/mi
35K· 21.75 mi
3:14:57
Rank: #19947 (+90)
21M → 35K
6:35 | 8:48/mi
23M
3:28:40
Rank: #20250 (-303)
35K → 23M
13:43 | 10:57/mi
24M
3:37:38
Rank: #20139 (+111)
23M → 24M
8:58 | 8:58/mi
40K· 24.85 mi
3:46:25
Rank: #20217 (-78)
24M → 40K
8:47 | 10:16/mi
25.2M
3:50:21
Rank: #20273 (-56)
40K → 25.2M
3:56 | 11:24/mi
Finish· 26.22 mi
3:59:09
Rank: #20190 (+83)
25.2M → Finish
8:48 | 8:38/mi

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:45:40
Pace8:04 /mi
2nd Half
Distance13.11 mi
Time2:13:29
Pace10:11 /mi
📊Positive Split: 26.3% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:57:4824:057:4524:05
7:45
-
10K
6.21 mi11:22:0148:187:4624:13
7:48
+0:03
15K
9.32 mi11:47:121:13:297:5325:11
8:06
+0:18
20K
12.43 mi12:13:331:39:508:0226:21
8:29
+0:23
Half
13.11 mi12:19:231:45:408:045:50
8:33
+0:04
25K
15.53 mi12:43:392:09:568:2224:16
10:01
+1:28
30K
18.64 mi13:15:432:42:008:4132:04
10:19
+0:18
20M
20.00 mi13:29:102:55:278:4613:27
9:54
-0:25
21M
21.00 mi13:42:053:08:228:5812:55
12:55
+3:01
35K
21.75 mi13:48:403:14:578:586:35
8:48
-4:07
23M
23.00 mi14:02:233:28:409:0413:43
10:57
+2:09
24M
24.00 mi14:11:213:37:389:048:58
8:58
-1:59
40K
24.85 mi14:20:083:46:259:078:47
10:16
+1:18
25.2M
25.20 mi14:24:043:50:219:083:56
11:24
+1:08
Finish
26.22 mi14:32:523:59:099:088:48
8:38
-2:46

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

7:45 /mi

Average Pace

9:08 /mi

Slowest Pace

12:55 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

1:13:29

31% of race

Time at Steady Pace

56:32

24% of race

Time at Slower Pace

1:49:08

46% of race

Average Pace: 9:07 /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 mi10:57:4824:057:4524:05
7:45
#14417
10K
6.21 mi11:22:0148:187:4624:13
7:48
#14536
15K
9.32 mi11:47:121:13:297:5325:11
8:06
#15369
20K
12.43 mi12:13:331:39:508:0226:21
8:29
#16198
Half
13.11 mi12:19:231:45:408:045:50
8:33
#16389
25K
15.53 mi12:43:392:09:568:2224:16
10:01
#18017
30K
18.64 mi13:15:432:42:008:4132:04
10:19
#19285
20M
20.00 mi13:29:102:55:278:4613:27
9:54
#19423
21M
21.00 mi13:42:053:08:228:5812:55
12:55
#20037
35K
21.75 mi13:48:403:14:578:586:35
8:48
#19947
23M
23.00 mi14:02:233:28:409:0413:43
10:57
#20250
24M
24.00 mi14:11:213:37:389:048:58
8:58
#20139
40K
24.85 mi14:20:083:46:259:078:47
10:16
#20217
25.2M
25.20 mi14:24:043:50:219:083:56
11:24
#20273
Finish
26.22 mi14:32:523:59:099:088:48
8:38
#20190
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF18-39Seg. OverallSeg. FemalesSeg. F18-39
5K3.11 mi3.11 mi144174172417216790(Top 59%)5605(Top 46%)5605(Top 102%)
10K6.21 mi3.10 mi14536-1194262-904262-9014772(Top 52%)4410(Top 36%)4410(Top 81%)
15K9.32 mi3.11 mi15369-8334772-5104772-51016790(Top 59%)5605(Top 46%)5605(Top 102%)
20K12.43 mi3.11 mi16198-8295273-5015273-50118125(Top 64%)6415(Top 52%)6415(Top 117%)
Half13.11 mi0.68 mi16389-1915372-995372-9919585(Top 69%)7241(Top 59%)7241(Top 132%)
25K15.53 mi2.42 mi18017-16286370-9986370-99823276(Top 82%)9348(Top 76%)9348(Top 171%)
30K18.64 mi3.11 mi19285-12687119-7497119-74922514(Top 79%)9052(Top 74%)9052(Top 166%)
20M20.00 mi1.36 mi19423-1387219-1007219-10020615(Top 73%)8146(Top 67%)8146(Top 149%)
21M21.00 mi1.00 mi20037-6147595-3767595-37624948(Top 88%)10540(Top 86%)10540(Top 193%)
35K21.75 mi0.75 mi19947+907559+367559+3617309(Top 61%)6544(Top 54%)6544(Top 120%)
23M23.00 mi1.25 mi20250-3037760-2017760-20123126(Top 81%)9675(Top 79%)9675(Top 177%)
24M24.00 mi1.00 mi20139+1117715+457715+4517232(Top 61%)6621(Top 54%)6621(Top 121%)
40K24.85 mi0.85 mi20217-787780-657780-6521305(Top 75%)8819(Top 72%)8819(Top 161%)
25.2M25.20 mi0.35 mi20273-567812-327812-3221823(Top 77%)9061(Top 74%)9061(Top 166%)
Finish26.22 mi1.02 mi20190+837775+377775+3717131(Top 60%)6636(Top 54%)6636(Top 121%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 59%
×21stories
+97ft-345ft

Overall

16790

Females

5605

F18-39

5605

5K→10K

3.1 - 6.2 mi

Top 52%
×5stories
+79ft-138ft

Overall

14772

Females

4410

F18-39

4410

10K→15K

6.2 - 9.3 mi

Top 59%
×3stories
+67ft-78ft

Overall

16790

Females

5605

F18-39

5605

15K→20K

9.3 - 12.4 mi

Top 64%
×5stories
+106ft-86ft

Overall

18125

Females

6415

F18-39

6415

20K→Half

12.4 - 13.1 mi

Top 69%
×2stories
+19ft-37ft

Overall

19585

Females

7241

F18-39

7241

Half→25K

13.1 - 15.5 mi

Top 82%
×4stories
+66ft-88ft

Overall

23276

Females

9348

F18-39

9348

25K→30K

15.5 - 18.6 mi

Top 79%
×9stories
+181ft-148ft

Overall

22514

Females

9052

F18-39

9052

30K→20M

18.6 - 20.0 mi

Top 73%
×5stories
+64ft-50ft

Overall

20615

Females

8146

F18-39

8146

20M→21M

20.0 - 21.0 mi

Top 88%
×8stories
+106ft-24ft

Overall

24948

Females

10540

F18-39

10540

21M→35K

21.0 - 21.8 mi

Top 61%
×7stories
+17ft-86ft

Overall

17309

Females

6544

F18-39

6544

35K→23M

21.8 - 23.0 mi

Top 81%
×5stories
+23ft-63ft

Overall

23126

Females

9675

F18-39

9675

23M→24M

23.0 - 24.0 mi

Top 61%
×6stories
+12ft-82ft

Overall

17232

Females

6621

F18-39

6621

24M→40K

24.0 - 24.9 mi

Top 75%
×1story
+6ft-20ft

Overall

21305

Females

8819

F18-39

8819

40K→25.2M

24.9 - 25.2 mi

Top 77%
×1story
+13ft-16ft

Overall

21823

Females

9061

F18-39

9061

25.2M→Finish

25.2 - 26.2 mi

Top 60%
×2stories
+22ft-21ft

Overall

17131

Females

6636

F18-39

6636

Passing Analysis

Category:
Athletes Passed
879
Passed By
6652
Net Change
-5773
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#14417
5K → 10K238357-119#14417#14536
10K → 15K43876-833#14536#15369
15K → 20K60889-829#15369#16198
20K → Half5196-191#16198#16389
Half → 25K131641-1628#16389#18017
25K → 30K361304-1268#18017#19285
30K → 20M62200-138#19285#19423
20M → 21M11625-614#19423#20037
21M → 35K988+90#20037#19947
35K → 23M28331-303#19947#20250
23M → 24M12110+111#20250#20139
24M → 40K39117-78#20139#20217
40K → 25.2M1571-56#20217#20273
25.2M → Finish11027+83#20273#20190
TOTALS8796652-5773
📊

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