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BOSTON MARATHON 2025

Margreta Doerfler

Bib: 18754•F

NH

0:00
0:00
/ mi
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Overall
#0 / 28404
Top 49%
Gender (Female)
#0 / 12228
Top 35%
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
24:03
Rank: #14312
Start → 5K
24:03 | 7:44/mi
10K· 6.21 mi
48:13
Rank: #14437 (-125)
5K → 10K
24:10 | 7:47/mi
15K· 9.32 mi
1:12:41
Rank: #14615 (-178)
10K → 15K
24:28 | 7:53/mi
20K· 12.43 mi
1:37:21
Rank: #14521 (+94)
15K → 20K
24:40 | 7:56/mi
Half· 13.11 mi
1:42:49
Rank: #14603 (-82)
20K → Half
5:28 | 8:01/mi
25K· 15.53 mi
2:02:55
Rank: #14833 (-230)
Half → 25K
20:06 | 8:17/mi
30K· 18.64 mi
2:29:29
Rank: #14893 (-60)
25K → 30K
26:34 | 8:33/mi
20M
2:41:17
Rank: #14856 (+37)
30K → 20M
11:48 | 8:41/mi
21M
2:50:18
Rank: #14736 (+120)
20M → 21M
9:01 | 9:01/mi
35K· 21.75 mi
2:56:08
Rank: #14563 (+173)
21M → 35K
5:50 | 7:48/mi
23M
3:06:29
Rank: #14388 (+175)
35K → 23M
10:21 | 8:16/mi
24M
3:14:29
Rank: #14235 (+153)
23M → 24M
8:00 | 8:00/mi
40K· 24.85 mi
3:21:37
Rank: #14130 (+105)
24M → 40K
7:08 | 8:21/mi
25.2M
3:24:47
Rank: #14100 (+30)
40K → 25.2M
3:10 | 9:11/mi
Finish· 26.22 mi
3:32:53
Rank: #13995 (+105)
25.2M → Finish
8:06 | 7:57/mi

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:42:49
Pace7:51 /mi
2nd Half
Distance13.11 mi
Time1:50:04
Pace8:24 /mi
📊Positive Split: 7.1% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:14:4324:037:4424:03
7:44
-
10K
6.21 mi11:38:5348:137:4624:10
7:47
+0:03
15K
9.32 mi12:03:211:12:417:4824:28
7:53
+0:06
20K
12.43 mi12:28:011:37:217:5024:40
7:56
+0:03
Half
13.11 mi12:33:291:42:497:515:28
8:01
+0:05
25K
15.53 mi12:53:352:02:557:5520:06
8:17
+0:16
30K
18.64 mi13:20:092:29:298:0126:34
8:33
+0:16
20M
20.00 mi13:31:572:41:178:0411:48
8:41
+0:08
21M
21.00 mi13:40:582:50:188:079:01
9:01
+0:20
35K
21.75 mi13:46:482:56:088:065:50
7:48
-1:13
23M
23.00 mi13:57:093:06:298:0610:21
8:16
+0:28
24M
24.00 mi14:05:093:14:298:068:00
8:00
-0:16
40K
24.85 mi14:12:173:21:378:077:08
8:21
+0:21
25.2M
25.20 mi14:15:273:24:478:083:10
9:11
+0:50
Finish
26.22 mi14:23:333:32:538:088:06
7:57
-1:14

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

7:44 /mi

Average Pace

8:08 /mi

Slowest Pace

9:11 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

2:42:20

76% of race

Time at Steady Pace

47:23

22% of race

Time at Slower Pace

3:10

1% of race

Average Pace: 8:07 /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 mi11:14:4324:037:4424:03
7:44
#14312
10K
6.21 mi11:38:5348:137:4624:10
7:47
#14437
15K
9.32 mi12:03:211:12:417:4824:28
7:53
#14615
20K
12.43 mi12:28:011:37:217:5024:40
7:56
#14521
Half
13.11 mi12:33:291:42:497:515:28
8:01
#14603
25K
15.53 mi12:53:352:02:557:5520:06
8:17
#14833
30K
18.64 mi13:20:092:29:298:0126:34
8:33
#14893
20M
20.00 mi13:31:572:41:178:0411:48
8:41
#14856
21M
21.00 mi13:40:582:50:188:079:01
9:01
#14736
35K
21.75 mi13:46:482:56:088:065:50
7:48
#14563
23M
23.00 mi13:57:093:06:298:0610:21
8:16
#14388
24M
24.00 mi14:05:093:14:298:068:00
8:00
#14235
40K
24.85 mi14:12:173:21:378:077:08
8:21
#14130
25.2M
25.20 mi14:15:273:24:478:083:10
9:11
#14100
Finish
26.22 mi14:23:333:32:538:088:06
7:57
#13995
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF18-39Seg. OverallSeg. FemalesSeg. F18-39
5K3.11 mi3.11 mi143124111411115059(Top 53%)4611(Top 38%)4611(Top 84%)
10K6.21 mi3.10 mi14437-1254197-864197-8614634(Top 52%)4328(Top 35%)4328(Top 79%)
15K9.32 mi3.11 mi14615-1784321-1244321-12415059(Top 53%)4611(Top 38%)4611(Top 84%)
20K12.43 mi3.11 mi14521+944302+194302+1914455(Top 51%)4343(Top 36%)4343(Top 79%)
Half13.11 mi0.68 mi14603-824350-484350-4816008(Top 56%)5169(Top 42%)5169(Top 95%)
25K15.53 mi2.42 mi14833-2304524-1744524-17415856(Top 56%)5227(Top 43%)5227(Top 96%)
30K18.64 mi3.11 mi14893-604613-894613-8915085(Top 53%)4946(Top 40%)4946(Top 90%)
20M20.00 mi1.36 mi14856+374614-14614-114954(Top 53%)5013(Top 41%)5013(Top 92%)
21M21.00 mi1.00 mi14736+1204572+424572+4213632(Top 48%)4427(Top 36%)4427(Top 81%)
35K21.75 mi0.75 mi14563+1734489+834489+8310891(Top 38%)3074(Top 25%)3074(Top 56%)
23M23.00 mi1.25 mi14388+1754430+594430+5911862(Top 42%)3673(Top 30%)3673(Top 67%)
24M24.00 mi1.00 mi14235+1534379+514379+5111285(Top 40%)3465(Top 28%)3465(Top 63%)
40K24.85 mi0.85 mi14130+1054353+264353+2612456(Top 44%)4165(Top 34%)4165(Top 76%)
25.2M25.20 mi0.35 mi14100+304345+84345+812879(Top 45%)4437(Top 36%)4437(Top 81%)
Finish26.22 mi1.02 mi13995+1054317+284317+2812573(Top 44%)4230(Top 35%)4230(Top 77%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 53%
×21stories
+97ft-345ft

Overall

15059

Females

4611

F18-39

4611

5K→10K

3.1 - 6.2 mi

Top 52%
×5stories
+79ft-138ft

Overall

14634

Females

4328

F18-39

4328

10K→15K

6.2 - 9.3 mi

Top 53%
×3stories
+67ft-78ft

Overall

15059

Females

4611

F18-39

4611

15K→20K

9.3 - 12.4 mi

Top 51%
×5stories
+106ft-86ft

Overall

14455

Females

4343

F18-39

4343

20K→Half

12.4 - 13.1 mi

Top 56%
×2stories
+19ft-37ft

Overall

16008

Females

5169

F18-39

5169

Half→25K

13.1 - 15.5 mi

Top 56%
×4stories
+66ft-88ft

Overall

15856

Females

5227

F18-39

5227

25K→30K

15.5 - 18.6 mi

Top 53%
×9stories
+181ft-148ft

Overall

15085

Females

4946

F18-39

4946

30K→20M

18.6 - 20.0 mi

Top 53%
×5stories
+64ft-50ft

Overall

14954

Females

5013

F18-39

5013

20M→21M

20.0 - 21.0 mi

Top 48%
×8stories
+106ft-24ft

Overall

13632

Females

4427

F18-39

4427

21M→35K

21.0 - 21.8 mi

Top 38%
×7stories
+17ft-86ft

Overall

10891

Females

3074

F18-39

3074

35K→23M

21.8 - 23.0 mi

Top 42%
×5stories
+23ft-63ft

Overall

11862

Females

3673

F18-39

3673

23M→24M

23.0 - 24.0 mi

Top 40%
×6stories
+12ft-82ft

Overall

11285

Females

3465

F18-39

3465

24M→40K

24.0 - 24.9 mi

Top 44%
×1story
+6ft-20ft

Overall

12456

Females

4165

F18-39

4165

40K→25.2M

24.9 - 25.2 mi

Top 45%
×1story
+13ft-16ft

Overall

12879

Females

4437

F18-39

4437

25.2M→Finish

25.2 - 26.2 mi

Top 44%
×2stories
+22ft-21ft

Overall

12573

Females

4230

F18-39

4230

Passing Analysis

Category:
Athletes Passed
2165
Passed By
1848
Net Change
+317
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#14312
5K → 10K241366-125#14312#14437
10K → 15K145323-178#14437#14615
15K → 20K240146+94#14615#14521
20K → Half20102-82#14521#14603
Half → 25K120350-230#14603#14833
25K → 30K239299-60#14833#14893
30K → 20M140103+37#14893#14856
20M → 21M16747+120#14856#14736
21M → 35K1829+173#14736#14563
35K → 23M19520+175#14563#14388
23M → 24M16310+153#14388#14235
24M → 40K12621+105#14235#14130
40K → 25.2M5121+30#14130#14100
25.2M → Finish13631+105#14100#13995
TOTALS21651848+317
📊

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