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BOSTON MARATHON 2025

Margaret Kuffner

Bib: 27058•F

PA

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
25:47
Rank: #18718
Start → 5K
8:18/mi
25:47 split
10K· 6.21 mi
50:51
Rank: #17867 (+851)
5K → 10K
8:04/mi
25:04 split
15K· 9.32 mi
1:16:18
Rank: #17679 (+188)
10K → 15K
8:11/mi
25:27 split
20K· 12.43 mi
1:42:56
Rank: #17897 (-218)
15K → 20K
8:34/mi
26:38 split
Half· 13.11 mi
1:48:33
Rank: #17863 (+34)
20K → Half
8:14/mi
5:37 split
25K· 15.53 mi
2:09:53
Rank: #17992 (-129)
Half → 25K
8:48/mi
21:20 split
30K· 18.64 mi
2:38:05
Rank: #17977 (+15)
25K → 30K
9:05/mi
28:12 split
20M
2:50:28
Rank: #17925 (+52)
30K → 20M
9:07/mi
12:23 split
21M
2:59:53
Rank: #17797 (+128)
20M → 21M
9:25/mi
9:25 split
35K· 21.75 mi
3:07:17
Rank: #18000 (-203)
21M → 35K
9:53/mi
7:24 split
23M
3:19:41
Rank: #18182 (-182)
35K → 23M
9:54/mi
12:24 split
24M
3:29:25
Rank: #18296 (-114)
23M → 24M
9:44/mi
9:44 split
40K· 24.85 mi
3:37:44
Rank: #18380 (-84)
24M → 40K
9:44/mi
8:19 split
25.2M
3:41:23
Rank: #18396 (-16)
40K → 25.2M
10:35/mi
3:39 split
Finish· 26.22 mi
3:50:24
Rank: #18409 (-13)
25.2M → Finish
8:51/mi
9:01 split

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:48:33
Pace8:17 /mi
2nd Half
Distance13.11 mi
Time2:01:51
Pace9:18 /mi
📊Positive Split: 12.3% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:43:0325:478:1825:47
8:18
-
10K
6.21 mi12:08:0750:518:1125:04
8:04
-0:14
15K
9.32 mi12:33:341:16:188:1125:27
8:11
+0:07
20K
12.43 mi13:00:121:42:568:1726:38
8:34
+0:23
Half
13.11 mi13:05:491:48:338:175:37
8:14
-0:20
25K
15.53 mi13:27:092:09:538:2221:20
8:48
+0:34
30K
18.64 mi13:55:212:38:058:2928:12
9:05
+0:17
20M
20.00 mi14:07:442:50:288:3112:23
9:07
+0:02
21M
21.00 mi14:17:092:59:538:349:25
9:25
+0:18
35K
21.75 mi14:24:333:07:178:377:24
9:53
+0:28
23M
23.00 mi14:36:573:19:418:4112:24
9:54
+0:01
24M
24.00 mi14:46:413:29:258:449:44
9:44
-0:10
40K
24.85 mi14:55:003:37:448:468:19
9:44
0:00
25.2M
25.20 mi14:58:393:41:238:473:39
10:35
+0:51
Finish
26.22 mi15:07:403:50:248:489:01
8:51
-1:44

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

8:04 /mi

Average Pace

8:48 /mi

Slowest Pace

10:35 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

1:48:33

47% of race

Time at Steady Pace

1:20:21

35% of race

Time at Slower Pace

41:30

18% of race

Average Pace: 8:47 /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 mi11:43:0325:478:1825:47
8:18
#18718
10K
6.21 mi12:08:0750:518:1125:04
8:04
#17867
15K
9.32 mi12:33:341:16:188:1125:27
8:11
#17679
20K
12.43 mi13:00:121:42:568:1726:38
8:34
#17897
Half
13.11 mi13:05:491:48:338:175:37
8:14
#17863
25K
15.53 mi13:27:092:09:538:2221:20
8:48
#17992
30K
18.64 mi13:55:212:38:058:2928:12
9:05
#17977
20M
20.00 mi14:07:442:50:288:3112:23
9:07
#17925
21M
21.00 mi14:17:092:59:538:349:25
9:25
#17797
35K
21.75 mi14:24:333:07:178:377:24
9:53
#18000
23M
23.00 mi14:36:573:19:418:4112:24
9:54
#18182
24M
24.00 mi14:46:413:29:258:449:44
9:44
#18296
40K
24.85 mi14:55:003:37:448:468:19
9:44
#18380
25.2M
25.20 mi14:58:393:41:238:473:39
10:35
#18396
Finish
26.22 mi15:07:403:50:248:489:01
8:51
#18409
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF18-39Seg. OverallSeg. FemalesSeg. F18-39
5K3.11 mi3.11 mi187186751675117350(Top 61%)5929(Top 48%)5929(Top 108%)
10K6.21 mi3.10 mi17867+8516249+5026249+50216989(Top 60%)5701(Top 47%)5701(Top 104%)
15K9.32 mi3.11 mi17679+1886132+1176132+11717350(Top 61%)5929(Top 48%)5929(Top 108%)
20K12.43 mi3.11 mi17897-2186276-1446276-14418697(Top 66%)6744(Top 55%)6744(Top 123%)
Half13.11 mi0.68 mi17863+346265+116265+1117563(Top 62%)6089(Top 50%)6089(Top 111%)
25K15.53 mi2.42 mi17992-1296355-906355-9018929(Top 67%)6940(Top 57%)6940(Top 127%)
30K18.64 mi3.11 mi17977+156391-366391-3618082(Top 64%)6621(Top 54%)6621(Top 121%)
20M20.00 mi1.36 mi17925+526379+126379+1217394(Top 61%)6367(Top 52%)6367(Top 116%)
21M21.00 mi1.00 mi17797+1286323+566323+5615740(Top 55%)5580(Top 46%)5580(Top 102%)
35K21.75 mi0.75 mi18000-2036449-1266449-12621598(Top 76%)8821(Top 72%)8821(Top 161%)
23M23.00 mi1.25 mi18182-1826591-1426591-14220174(Top 71%)8135(Top 67%)8135(Top 149%)
24M24.00 mi1.00 mi18296-1146681-906681-9020508(Top 72%)8348(Top 68%)8348(Top 153%)
40K24.85 mi0.85 mi18380-846757-766757-7619585(Top 69%)7931(Top 65%)7931(Top 145%)
25.2M25.20 mi0.35 mi18396-166774-176774-1719322(Top 68%)7810(Top 64%)7810(Top 143%)
Finish26.22 mi1.02 mi18409-136810-366810-3618303(Top 64%)7241(Top 59%)7241(Top 132%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 61%
×21story building
+97ft-345ft

Overall

17350

Females

5929

F18-39

5929

5K→10K

3.1 - 6.2 mi

Top 60%
×5story building
+79ft-138ft

Overall

16989

Females

5701

F18-39

5701

10K→15K

6.2 - 9.3 mi

Top 61%
×3story building
+67ft-78ft

Overall

17350

Females

5929

F18-39

5929

15K→20K

9.3 - 12.4 mi

Top 66%
×5story building
+106ft-86ft

Overall

18697

Females

6744

F18-39

6744

20K→Half

12.4 - 13.1 mi

Top 62%
×2story building
+19ft-37ft

Overall

17563

Females

6089

F18-39

6089

Half→25K

13.1 - 15.5 mi

Top 67%
×4story building
+66ft-88ft

Overall

18929

Females

6940

F18-39

6940

25K→30K

15.5 - 18.6 mi

Top 64%
×9story building
+181ft-148ft

Overall

18082

Females

6621

F18-39

6621

30K→20M

18.6 - 20.0 mi

Top 61%
×5story building
+64ft-50ft

Overall

17394

Females

6367

F18-39

6367

20M→21M

20.0 - 21.0 mi

Top 55%
×8story building
+106ft-24ft

Overall

15740

Females

5580

F18-39

5580

21M→35K

21.0 - 21.8 mi

Top 76%
×7story building
+17ft-86ft

Overall

21598

Females

8821

F18-39

8821

35K→23M

21.8 - 23.0 mi

Top 71%
×5story building
+23ft-63ft

Overall

20174

Females

8135

F18-39

8135

23M→24M

23.0 - 24.0 mi

Top 72%
×6story building
+12ft-82ft

Overall

20508

Females

8348

F18-39

8348

24M→40K

24.0 - 24.9 mi

Top 69%
×1story
+6ft-20ft

Overall

19585

Females

7931

F18-39

7931

40K→25.2M

24.9 - 25.2 mi

Top 68%
×1story
+13ft-16ft

Overall

19322

Females

7810

F18-39

7810

25.2M→Finish

25.2 - 26.2 mi

Top 64%
×2story building
+22ft-21ft

Overall

18303

Females

7241

F18-39

7241

Passing Analysis

Category:
Athletes Passed
2301
Passed By
1992
Net Change
+309
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#18718
5K → 10K90453+851#18718#17867
10K → 15K289101+188#17867#17679
15K → 20K122340-218#17679#17897
20K → Half4612+34#17897#17863
Half → 25K135264-129#17863#17992
25K → 30K242227+15#17992#17977
30K → 20M14593+52#17977#17925
20M → 21M16739+128#17925#17797
21M → 35K25228-203#17797#18000
35K → 23M57239-182#18000#18182
23M → 24M54168-114#18182#18296
24M → 40K43127-84#18296#18380
40K → 25.2M1834-16#18380#18396
25.2M → Finish5467-13#18396#18409
TOTALS23011992+309
📊

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