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BOSTON MARATHON 2025

Katherine Nehring

Bib: 31049•F

NY

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
26:54
Rank: #20799
Start → 5K
8:39/mi
26:54 split
10K· 6.21 mi
53:10
Rank: #20175 (+624)
5K → 10K
8:27/mi
26:16 split
15K· 9.32 mi
1:19:29
Rank: #19842 (+333)
10K → 15K
8:28/mi
26:19 split
20K· 12.43 mi
1:46:02
Rank: #19471 (+371)
15K → 20K
8:33/mi
26:33 split
Half· 13.11 mi
1:51:49
Rank: #19455 (+16)
20K → Half
8:29/mi
5:47 split
25K· 15.53 mi
2:13:09
Rank: #19333 (+122)
Half → 25K
8:48/mi
21:20 split
30K· 18.64 mi
2:41:14
Rank: #19040 (+293)
25K → 30K
9:02/mi
28:05 split
20M
2:54:00
Rank: #19035 (+5)
30K → 20M
9:24/mi
12:46 split
21M
3:03:37
Rank: #18864 (+171)
20M → 21M
9:37/mi
9:37 split
35K· 21.75 mi
3:10:07
Rank: #18786 (+78)
21M → 35K
8:41/mi
6:30 split
23M
3:21:21
Rank: #18611 (+175)
35K → 23M
8:58/mi
11:14 split
24M
3:30:11
Rank: #18512 (+99)
23M → 24M
8:50/mi
8:50 split
40K· 24.85 mi
3:37:50
Rank: #18400 (+112)
24M → 40K
8:57/mi
7:39 split
25.2M
3:41:12
Rank: #18364 (+36)
40K → 25.2M
9:46/mi
3:22 split
Finish· 26.22 mi
3:49:36
Rank: #18235 (+129)
25.2M → Finish
8:15/mi
8:24 split

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:51:49
Pace8:32 /mi
2nd Half
Distance13.11 mi
Time1:57:47
Pace8:59 /mi
📊Positive Split: 5.3% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:49:1526:548:3926:54
8:39
-
10K
6.21 mi12:15:3153:108:3326:16
8:27
-0:12
15K
9.32 mi12:41:501:19:298:3226:19
8:28
+0:01
20K
12.43 mi13:08:231:46:028:3226:33
8:33
+0:05
Half
13.11 mi13:14:101:51:498:325:47
8:29
-0:04
25K
15.53 mi13:35:302:13:098:3421:20
8:48
+0:19
30K
18.64 mi14:03:352:41:148:3928:05
9:02
+0:14
20M
20.00 mi14:16:212:54:008:4212:46
9:24
+0:22
21M
21.00 mi14:25:583:03:378:459:37
9:37
+0:13
35K
21.75 mi14:32:283:10:078:456:30
8:41
-0:56
23M
23.00 mi14:43:423:21:218:4511:14
8:58
+0:17
24M
24.00 mi14:52:323:30:118:458:50
8:50
-0:08
40K
24.85 mi15:00:113:37:508:467:39
8:57
+0:07
25.2M
25.20 mi15:03:333:41:128:473:22
9:46
+0:49
Finish
26.22 mi15:11:573:49:368:468:24
8:15
-1:31

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

8:15 /mi

Average Pace

8:46 /mi

Slowest Pace

9:46 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

3:23:51

89% of race

Time at Steady Pace

22:23

10% of race

Time at Slower Pace

3:22

1% of race

Average Pace: 8:45 /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 mi11:49:1526:548:3926:54
8:39
#20799
10K
6.21 mi12:15:3153:108:3326:16
8:27
#20175
15K
9.32 mi12:41:501:19:298:3226:19
8:28
#19842
20K
12.43 mi13:08:231:46:028:3226:33
8:33
#19471
Half
13.11 mi13:14:101:51:498:325:47
8:29
#19455
25K
15.53 mi13:35:302:13:098:3421:20
8:48
#19333
30K
18.64 mi14:03:352:41:148:3928:05
9:02
#19040
20M
20.00 mi14:16:212:54:008:4212:46
9:24
#19035
21M
21.00 mi14:25:583:03:378:459:37
9:37
#18864
35K
21.75 mi14:32:283:10:078:456:30
8:41
#18786
23M
23.00 mi14:43:423:21:218:4511:14
8:58
#18611
24M
24.00 mi14:52:323:30:118:458:50
8:50
#18512
40K
24.85 mi15:00:113:37:508:467:39
8:57
#18400
25.2M
25.20 mi15:03:333:41:128:473:22
9:46
#18364
Finish
26.22 mi15:11:573:49:368:468:24
8:15
#18235
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF18-39Seg. OverallSeg. FemalesSeg. F18-39
5K3.11 mi3.11 mi207997968796819161(Top 67%)6985(Top 57%)6985(Top 128%)
10K6.21 mi3.10 mi20175+6247579+3897579+38919547(Top 69%)7200(Top 59%)7200(Top 132%)
15K9.32 mi3.11 mi19842+3337374+2057374+20519161(Top 67%)6985(Top 57%)6985(Top 128%)
20K12.43 mi3.11 mi19471+3717169+2057169+20518533(Top 65%)6647(Top 54%)6647(Top 122%)
Half13.11 mi0.68 mi19455+167164+57164+519092(Top 67%)6951(Top 57%)6951(Top 127%)
25K15.53 mi2.42 mi19333+1227109+557109+5518928(Top 67%)6939(Top 57%)6939(Top 127%)
30K18.64 mi3.11 mi19040+2936981+1286981+12817887(Top 63%)6523(Top 53%)6523(Top 119%)
20M20.00 mi1.36 mi19035+57000-197000-1918733(Top 66%)7123(Top 58%)7123(Top 130%)
21M21.00 mi1.00 mi18864+1716927+736927+7316659(Top 59%)6069(Top 50%)6069(Top 111%)
35K21.75 mi0.75 mi18786+786900+276900+2716660(Top 59%)6156(Top 50%)6156(Top 113%)
23M23.00 mi1.25 mi18611+1756827+736827+7316127(Top 57%)5961(Top 49%)5961(Top 109%)
24M24.00 mi1.00 mi18512+996800+276800+2716524(Top 58%)6222(Top 51%)6222(Top 114%)
40K24.85 mi0.85 mi18400+1126768+326768+3216040(Top 56%)6067(Top 50%)6067(Top 111%)
25.2M25.20 mi0.35 mi18364+366758+106758+1015981(Top 56%)6086(Top 50%)6086(Top 111%)
Finish26.22 mi1.02 mi18235+1296703+556703+5514613(Top 51%)5281(Top 43%)5281(Top 97%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 67%
×21story building
+97ft-345ft

Overall

19161

Females

6985

F18-39

6985

5K→10K

3.1 - 6.2 mi

Top 69%
×5story building
+79ft-138ft

Overall

19547

Females

7200

F18-39

7200

10K→15K

6.2 - 9.3 mi

Top 67%
×3story building
+67ft-78ft

Overall

19161

Females

6985

F18-39

6985

15K→20K

9.3 - 12.4 mi

Top 65%
×5story building
+106ft-86ft

Overall

18533

Females

6647

F18-39

6647

20K→Half

12.4 - 13.1 mi

Top 67%
×2story building
+19ft-37ft

Overall

19092

Females

6951

F18-39

6951

Half→25K

13.1 - 15.5 mi

Top 67%
×4story building
+66ft-88ft

Overall

18928

Females

6939

F18-39

6939

25K→30K

15.5 - 18.6 mi

Top 63%
×9story building
+181ft-148ft

Overall

17887

Females

6523

F18-39

6523

30K→20M

18.6 - 20.0 mi

Top 66%
×5story building
+64ft-50ft

Overall

18733

Females

7123

F18-39

7123

20M→21M

20.0 - 21.0 mi

Top 59%
×8story building
+106ft-24ft

Overall

16659

Females

6069

F18-39

6069

21M→35K

21.0 - 21.8 mi

Top 59%
×7story building
+17ft-86ft

Overall

16660

Females

6156

F18-39

6156

35K→23M

21.8 - 23.0 mi

Top 57%
×5story building
+23ft-63ft

Overall

16127

Females

5961

F18-39

5961

23M→24M

23.0 - 24.0 mi

Top 58%
×6story building
+12ft-82ft

Overall

16524

Females

6222

F18-39

6222

24M→40K

24.0 - 24.9 mi

Top 56%
×1story
+6ft-20ft

Overall

16040

Females

6067

F18-39

6067

40K→25.2M

24.9 - 25.2 mi

Top 56%
×1story
+13ft-16ft

Overall

15981

Females

6086

F18-39

6086

25.2M→Finish

25.2 - 26.2 mi

Top 51%
×2story building
+22ft-21ft

Overall

14613

Females

5281

F18-39

5281

Passing Analysis

Category:
Athletes Passed
3200
Passed By
636
Net Change
+2564
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#20799
5K → 10K71894+624#20799#20175
10K → 15K38350+333#20175#19842
15K → 20K41241+371#19842#19471
20K → Half4428+16#19471#19455
Half → 25K22199+122#19455#19333
25K → 30K37986+293#19333#19040
30K → 20M108103+5#19040#19035
20M → 21M19827+171#19035#18864
21M → 35K9618+78#18864#18786
35K → 23M19217+175#18786#18611
23M → 24M12627+99#18611#18512
24M → 40K13119+112#18512#18400
40K → 25.2M448+36#18400#18364
25.2M → Finish14819+129#18364#18235
TOTALS3200636+2564
📊

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