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BOSTON MARATHON 2025

Maddy Pfeifer

Bib: 7680•F

VT

0:00
0:00
/ mi
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Overall
#0 / 28404
Top 11%
Gender (Female)
#0 / 12228
Top 2%
Division (F18-39)
#0 / 5469
Top 3%
Race Day Weather
50°/40°F
broken clouds

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
20:01
Rank: #3437
Start → 5K
20:01 | 6:27/mi
10K· 6.21 mi
40:14
Rank: #3606 (-169)
5K → 10K
20:13 | 6:30/mi
15K· 9.32 mi
1:00:30
Rank: #3634 (-28)
10K → 15K
20:16 | 6:31/mi
20K· 12.43 mi
1:21:08
Rank: #3703 (-69)
15K → 20K
20:38 | 6:38/mi
Half· 13.11 mi
1:25:39
Rank: #3733 (-30)
20K → Half
4:31 | 6:37/mi
25K· 15.53 mi
1:41:45
Rank: #3696 (+37)
Half → 25K
16:06 | 6:38/mi
30K· 18.64 mi
2:02:57
Rank: #3636 (+60)
25K → 30K
21:12 | 6:49/mi
20M
2:12:22
Rank: #3594 (+42)
30K → 20M
9:25 | 6:56/mi
21M
2:19:45
Rank: #3587 (+7)
20M → 21M
7:23 | 7:23/mi
35K· 21.75 mi
2:24:43
Rank: #3539 (+48)
21M → 35K
4:58 | 6:38/mi
23M
2:33:29
Rank: #3502 (+37)
35K → 23M
8:46 | 7:00/mi
24M
2:40:15
Rank: #3455 (+47)
23M → 24M
6:46 | 6:46/mi
40K· 24.85 mi
2:45:53
Rank: #3352 (+103)
24M → 40K
5:38 | 6:35/mi
25.2M
2:48:23
Rank: #3307 (+45)
40K → 25.2M
2:30 | 7:15/mi
Finish· 26.22 mi
2:54:51
Rank: #3206 (+101)
25.2M → Finish
6:28 | 6:21/mi

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:25:39
Pace6:32 /mi
2nd Half
Distance13.11 mi
Time1:29:12
Pace6:48 /mi
📊Positive Split: 4.1% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:28:1220:016:2720:01
6:27
-
10K
6.21 mi10:48:2540:146:2820:13
6:30
+0:03
15K
9.32 mi11:08:411:00:306:2920:16
6:31
+0:01
20K
12.43 mi11:29:191:21:086:3220:38
6:38
+0:07
Half
13.11 mi11:33:501:25:396:324:31
6:37
-0:01
25K
15.53 mi11:49:561:41:456:3316:06
6:38
+0:01
30K
18.64 mi12:11:082:02:576:3621:12
6:49
+0:11
20M
20.00 mi12:20:332:12:226:379:25
6:56
+0:07
21M
21.00 mi12:27:562:19:456:397:23
7:23
+0:27
35K
21.75 mi12:32:542:24:436:394:58
6:38
-0:45
23M
23.00 mi12:41:402:33:296:408:46
7:00
+0:22
24M
24.00 mi12:48:262:40:156:416:46
6:46
-0:14
40K
24.85 mi12:54:042:45:536:405:38
6:35
-0:11
25.2M
25.20 mi12:56:342:48:236:412:30
7:15
+0:40
Finish
26.22 mi13:03:022:54:516:406:28
6:21
-0:54

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

6:21 /mi

Average Pace

6:40 /mi

Slowest Pace

7:23 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

2:36:12

89% of race

Time at Steady Pace

18:39

11% of race

Time at Slower Pace

0:00

0% of race

Average Pace: 6:40 /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 mi10:28:1220:016:2720:01
6:27
#3437
10K
6.21 mi10:48:2540:146:2820:13
6:30
#3606
15K
9.32 mi11:08:411:00:306:2920:16
6:31
#3634
20K
12.43 mi11:29:191:21:086:3220:38
6:38
#3703
Half
13.11 mi11:33:501:25:396:324:31
6:37
#3733
25K
15.53 mi11:49:561:41:456:3316:06
6:38
#3696
30K
18.64 mi12:11:082:02:576:3621:12
6:49
#3636
20M
20.00 mi12:20:332:12:226:379:25
6:56
#3594
21M
21.00 mi12:27:562:19:456:397:23
7:23
#3587
35K
21.75 mi12:32:542:24:436:394:58
6:38
#3539
23M
23.00 mi12:41:402:33:296:408:46
7:00
#3502
24M
24.00 mi12:48:262:40:156:416:46
6:46
#3455
40K
24.85 mi12:54:042:45:536:405:38
6:35
#3352
25.2M
25.20 mi12:56:342:48:236:412:30
7:15
#3307
Finish
26.22 mi13:03:022:54:516:406:28
6:21
#3206
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF18-39Seg. OverallSeg. FemalesSeg. F18-39
5K3.11 mi3.11 mi34371651653721(Top 13%)202(Top 2%)202(Top 4%)
10K6.21 mi3.10 mi3606-169180-15180-153796(Top 13%)210(Top 2%)210(Top 4%)
15K9.32 mi3.11 mi3634-28188-8188-83721(Top 13%)202(Top 2%)202(Top 4%)
20K12.43 mi3.11 mi3703-69197-9197-93969(Top 14%)225(Top 2%)225(Top 4%)
Half13.11 mi0.68 mi3733-30201-4201-44668(Top 16%)297(Top 2%)297(Top 5%)
25K15.53 mi2.42 mi3696+37198+3198+33746(Top 13%)219(Top 2%)219(Top 4%)
30K18.64 mi3.11 mi3636+60195+3195+33604(Top 13%)253(Top 2%)253(Top 5%)
20M20.00 mi1.36 mi3594+421951953717(Top 13%)286(Top 2%)286(Top 5%)
21M21.00 mi1.00 mi3587+7201-6201-64053(Top 14%)368(Top 3%)368(Top 7%)
35K21.75 mi0.75 mi3539+48198+3198+33204(Top 11%)253(Top 2%)253(Top 5%)
23M23.00 mi1.25 mi3502+37200-2200-23788(Top 13%)366(Top 3%)366(Top 7%)
24M24.00 mi1.00 mi3455+472002003359(Top 12%)325(Top 3%)325(Top 6%)
40K24.85 mi0.85 mi3352+103191+9191+91961(Top 7%)145(Top 1%)145(Top 3%)
25.2M25.20 mi0.35 mi3307+45190+1190+12397(Top 8%)240(Top 2%)240(Top 4%)
Finish26.22 mi1.02 mi3206+101185+5185+52104(Top 7%)167(Top 1%)167(Top 3%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 13%
×21stories
+97ft-345ft

Overall

3721

Females

202

F18-39

202

5K→10K

3.1 - 6.2 mi

Top 13%
×5stories
+79ft-138ft

Overall

3796

Females

210

F18-39

210

10K→15K

6.2 - 9.3 mi

Top 13%
×3stories
+67ft-78ft

Overall

3721

Females

202

F18-39

202

15K→20K

9.3 - 12.4 mi

Top 14%
×5stories
+106ft-86ft

Overall

3969

Females

225

F18-39

225

20K→Half

12.4 - 13.1 mi

Top 16%
×2stories
+19ft-37ft

Overall

4668

Females

297

F18-39

297

Half→25K

13.1 - 15.5 mi

Top 13%
×4stories
+66ft-88ft

Overall

3746

Females

219

F18-39

219

25K→30K

15.5 - 18.6 mi

Top 13%
×9stories
+181ft-148ft

Overall

3604

Females

253

F18-39

253

30K→20M

18.6 - 20.0 mi

Top 13%
×5stories
+64ft-50ft

Overall

3717

Females

286

F18-39

286

20M→21M

20.0 - 21.0 mi

Top 14%
×8stories
+106ft-24ft

Overall

4053

Females

368

F18-39

368

21M→35K

21.0 - 21.8 mi

Top 11%
×7stories
+17ft-86ft

Overall

3204

Females

253

F18-39

253

35K→23M

21.8 - 23.0 mi

Top 13%
×5stories
+23ft-63ft

Overall

3788

Females

366

F18-39

366

23M→24M

23.0 - 24.0 mi

Top 12%
×6stories
+12ft-82ft

Overall

3359

Females

325

F18-39

325

24M→40K

24.0 - 24.9 mi

Top 7%
×1story
+6ft-20ft

Overall

1961

Females

145

F18-39

145

40K→25.2M

24.9 - 25.2 mi

Top 8%
×1story
+13ft-16ft

Overall

2397

Females

240

F18-39

240

25.2M→Finish

25.2 - 26.2 mi

Top 7%
×2stories
+22ft-21ft

Overall

2104

Females

167

F18-39

167

Passing Analysis

Category:
Athletes Passed
1064
Passed By
833
Net Change
+231
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#3437
5K → 10K57226-169#3437#3606
10K → 15K97125-28#3606#3634
15K → 20K74143-69#3634#3703
20K → Half939-30#3703#3733
Half → 25K8548+37#3733#3696
25K → 30K13575+60#3696#3636
30K → 20M7735+42#3636#3594
20M → 21M4942+7#3594#3587
21M → 35K579+48#3587#3539
35K → 23M8245+37#3539#3502
23M → 24M7427+47#3502#3455
24M → 40K1063+103#3455#3352
40K → 25.2M505+45#3352#3307
25.2M → Finish11211+101#3307#3206
TOTALS1064833+231
📊

Passing Visuals

Category:

📈Position Graph

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🎨Heatmap Timeline

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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