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BOSTON MARATHON 2025

Kathryn Miller-Jensen

Bib: 20649•F

CT

0:00
0:00
/ mi
Masters
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Overall
#0 / 28404
Gender (Female)
#0 / 12228
Top 41%
Masters (Masters Women)
#0 / 6759
Top 27%
Division (F50-54)
#0 / 1303
Top 18%
Race Day Weather
50°/40°F
broken clouds

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
24:30
Rank: #15564
Start → 5K
24:30 | 7:53/mi
10K· 6.21 mi
49:21
Rank: #16044 (-480)
5K → 10K
24:51 | 8:00/mi
15K· 9.32 mi
1:14:13
Rank: #16036 (+8)
10K → 15K
24:52 | 8:00/mi
20K· 12.43 mi
1:40:10
Rank: #16385 (-349)
15K → 20K
25:57 | 8:21/mi
Half· 13.11 mi
1:45:36
Rank: #16345 (+40)
20K → Half
5:26 | 7:58/mi
25K· 15.53 mi
2:05:26
Rank: #16132 (+213)
Half → 25K
19:50 | 8:11/mi
30K· 18.64 mi
2:31:25
Rank: #15684 (+448)
25K → 30K
25:59 | 8:22/mi
20M
2:43:12
Rank: #15555 (+129)
30K → 20M
11:47 | 8:40/mi
21M
2:53:07
Rank: #15717 (-162)
20M → 21M
9:55 | 9:55/mi
35K· 21.75 mi
2:59:20
Rank: #15630 (+87)
21M → 35K
6:13 | 8:19/mi
23M
3:10:22
Rank: #15571 (+59)
35K → 23M
11:02 | 8:49/mi
24M
3:19:01
Rank: #15544 (+27)
23M → 24M
8:39 | 8:39/mi
40K· 24.85 mi
3:26:18
Rank: #15445 (+99)
24M → 40K
7:17 | 8:31/mi
25.2M
3:29:34
Rank: #15411 (+34)
40K → 25.2M
3:16 | 9:28/mi
Finish· 26.22 mi
3:37:32
Rank: #15271 (+140)
25.2M → Finish
7:58 | 7:49/mi

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:45:36
Pace8:03 /mi
2nd Half
Distance13.11 mi
Time1:51:56
Pace8:32 /mi
📊Positive Split: 6.0% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:18:3724:307:5324:30
7:53
-
10K
6.21 mi11:43:2849:217:5724:51
8:00
+0:07
15K
9.32 mi12:08:201:14:137:5824:52
8:00
0:00
20K
12.43 mi12:34:171:40:108:0425:57
8:21
+0:21
Half
13.11 mi12:39:431:45:368:035:26
7:58
-0:23
25K
15.53 mi12:59:332:05:268:0419:50
8:11
+0:13
30K
18.64 mi13:25:322:31:258:0725:59
8:22
+0:11
20M
20.00 mi13:37:192:43:128:1011:47
8:40
+0:18
21M
21.00 mi13:47:142:53:078:159:55
9:55
+1:15
35K
21.75 mi13:53:272:59:208:156:13
8:19
-1:36
23M
23.00 mi14:04:293:10:228:1711:02
8:49
+0:30
24M
24.00 mi14:13:083:19:018:188:39
8:39
-0:10
40K
24.85 mi14:20:253:26:188:187:17
8:31
-0:08
25.2M
25.20 mi14:23:413:29:348:193:16
9:28
+0:57
Finish
26.22 mi14:31:393:37:328:187:58
7:49
-1:39

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

7:49 /mi

Average Pace

8:18 /mi

Slowest Pace

9:55 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

1:27:37

40% of race

Time at Steady Pace

1:25:16

39% of race

Time at Slower Pace

44:39

21% of race

Average Pace: 8:18 /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 mi11:18:3724:307:5324:30
7:53
#15564
10K
6.21 mi11:43:2849:217:5724:51
8:00
#16044
15K
9.32 mi12:08:201:14:137:5824:52
8:00
#16036
20K
12.43 mi12:34:171:40:108:0425:57
8:21
#16385
Half
13.11 mi12:39:431:45:368:035:26
7:58
#16345
25K
15.53 mi12:59:332:05:268:0419:50
8:11
#16132
30K
18.64 mi13:25:322:31:258:0725:59
8:22
#15684
20M
20.00 mi13:37:192:43:128:1011:47
8:40
#15555
21M
21.00 mi13:47:142:53:078:159:55
9:55
#15717
35K
21.75 mi13:53:272:59:208:156:13
8:19
#15630
23M
23.00 mi14:04:293:10:228:1711:02
8:49
#15571
24M
24.00 mi14:13:083:19:018:188:39
8:39
#15544
40K
24.85 mi14:20:253:26:188:187:17
8:31
#15445
25.2M
25.20 mi14:23:413:29:348:193:16
9:28
#15411
Finish
26.22 mi14:31:393:37:328:187:58
7:49
#15271
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF50-54Seg. OverallSeg. FemalesSeg. F50-54
5K3.11 mi3.11 mi155644871487116084(Top 57%)5189(Top 42%)5189(Top 398%)
10K6.21 mi3.10 mi16044-4805166-2955166-29516484(Top 58%)5414(Top 44%)5414(Top 416%)
15K9.32 mi3.11 mi16036+85165+15165+116084(Top 57%)5189(Top 42%)5189(Top 398%)
20K12.43 mi3.11 mi16385-3495371-2065371-20617247(Top 61%)5910(Top 48%)5910(Top 454%)
Half13.11 mi0.68 mi16345+405350+215350+2115670(Top 55%)4990(Top 41%)4990(Top 383%)
25K15.53 mi2.42 mi16132+2135236+1145236+11415192(Top 53%)4847(Top 40%)4847(Top 372%)
30K18.64 mi3.11 mi15684+4485039+1975039+19713933(Top 49%)4331(Top 35%)4331(Top 332%)
20M20.00 mi1.36 mi15555+1295005+345005+3414890(Top 52%)4984(Top 41%)4984(Top 383%)
21M21.00 mi1.00 mi15717-1625145-1405145-14017982(Top 63%)6776(Top 55%)6776(Top 520%)
35K21.75 mi0.75 mi15630+875111+345111+3414347(Top 51%)4878(Top 40%)4878(Top 374%)
23M23.00 mi1.25 mi15571+595113-25113-215195(Top 53%)5435(Top 44%)5435(Top 417%)
24M24.00 mi1.00 mi15544+275113511315468(Top 54%)5630(Top 46%)5630(Top 432%)
40K24.85 mi0.85 mi15445+995097+165097+1613586(Top 48%)4752(Top 39%)4752(Top 365%)
25.2M25.20 mi0.35 mi15411+345087+105087+1014489(Top 51%)5278(Top 43%)5278(Top 405%)
Finish26.22 mi1.02 mi15271+1405030+575030+5711612(Top 41%)3765(Top 31%)3765(Top 289%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 57%
×21stories
+97ft-345ft

Overall

16084

Females

5189

F50-54

5189

5K→10K

3.1 - 6.2 mi

Top 58%
×5stories
+79ft-138ft

Overall

16484

Females

5414

F50-54

5414

10K→15K

6.2 - 9.3 mi

Top 57%
×3stories
+67ft-78ft

Overall

16084

Females

5189

F50-54

5189

15K→20K

9.3 - 12.4 mi

Top 61%
×5stories
+106ft-86ft

Overall

17247

Females

5910

F50-54

5910

20K→Half

12.4 - 13.1 mi

Top 55%
×2stories
+19ft-37ft

Overall

15670

Females

4990

F50-54

4990

Half→25K

13.1 - 15.5 mi

Top 53%
×4stories
+66ft-88ft

Overall

15192

Females

4847

F50-54

4847

25K→30K

15.5 - 18.6 mi

Top 49%
×9stories
+181ft-148ft

Overall

13933

Females

4331

F50-54

4331

30K→20M

18.6 - 20.0 mi

Top 52%
×5stories
+64ft-50ft

Overall

14890

Females

4984

F50-54

4984

20M→21M

20.0 - 21.0 mi

Top 63%
×8stories
+106ft-24ft

Overall

17982

Females

6776

F50-54

6776

21M→35K

21.0 - 21.8 mi

Top 51%
×7stories
+17ft-86ft

Overall

14347

Females

4878

F50-54

4878

35K→23M

21.8 - 23.0 mi

Top 53%
×5stories
+23ft-63ft

Overall

15195

Females

5435

F50-54

5435

23M→24M

23.0 - 24.0 mi

Top 54%
×6stories
+12ft-82ft

Overall

15468

Females

5630

F50-54

5630

24M→40K

24.0 - 24.9 mi

Top 48%
×1story
+6ft-20ft

Overall

13586

Females

4752

F50-54

4752

40K→25.2M

24.9 - 25.2 mi

Top 51%
×1story
+13ft-16ft

Overall

14489

Females

5278

F50-54

5278

25.2M→Finish

25.2 - 26.2 mi

Top 41%
×2stories
+22ft-21ft

Overall

11612

Females

3765

F50-54

3765

Passing Analysis

Category:
Athletes Passed
2172
Passed By
1879
Net Change
+293
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#15564
5K → 10K158638-480#15564#16044
10K → 15K212204+8#16044#16036
15K → 20K111460-349#16036#16385
20K → Half6121+40#16385#16345
Half → 25K26249+213#16345#16132
25K → 30K49244+448#16132#15684
30K → 20M17849+129#15684#15555
20M → 21M70232-162#15555#15717
21M → 35K10316+87#15717#15630
35K → 23M13374+59#15630#15571
23M → 24M8053+27#15571#15544
24M → 40K11920+99#15544#15445
40K → 25.2M4410+34#15445#15411
25.2M → Finish1499+140#15411#15271
TOTALS21721879+293
📊

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