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BOSTON MARATHON 2025

Amy Mergen

Bib: 21527•F

SD

0:00
0:00
/ mi
Masters
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Overall
#0 / 28404
Gender (Female)
#0 / 12228
Masters (Masters Women)
#0 / 6759
Top 40%
Division (F50-54)
#0 / 1303
Top 35%
Race Day Weather
50°/40°F
broken clouds

⏱️ Race Timeline

Course Elevation
7–469 ft
≈
×2stacked redwood trees
•▲ 890 ft climb · ▼ 1342 ft descent
Ribbon color based on
FasterSteadySlower· vs. your average pace
Start
0:00
Race begins
5K· 3.11 mi
8:22/mi
26:00
↑ 97↓ 3451.5%
10K· 6.21 mi
8:21/mi
51:57
↑ 79↓ 1380.4%
15K· 9.32 mi
8:27/mi
1:18:13
↑ 67↓ 78
20K· 12.43 mi
8:30/mi
1:44:38
↑ 106↓ 860.1%
Half· 13.11 mi
8:32/mi
1:50:27
↑ 19↓ 370.5%
25K· 15.53 mi
8:31/mi
2:11:07
↑ 66↓ 880.2%
30K· 18.64 mi
8:49/mi
2:38:30
↑ 181↓ 1480.2%
20M
8:54/mi
2:50:35
↑ 64↓ 500.2%
21M
9:26/mi
3:00:01
↑ 106↓ 241.6%
35K· 21.75 mi
8:51/mi
3:06:38
↑ 17↓ 861.7%
23M
8:54/mi
3:17:47
↑ 23↓ 630.6%
24M
8:33/mi
3:26:20
↓ 821.3%
40K· 24.85 mi
8:59/mi
3:34:01
↓ 200.3%
25.2M
9:46/mi
3:37:23
↑ 13↓ 160.2%
Finish· 26.22 mi
8:26/mi
3:45:59
↑ 22↓ 21

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:50:27
Pace8:26 /mi
2nd Half
Distance13.11 mi
Time1:55:32
Pace8:49 /mi
📊Positive Split: 4.6% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:21:4626:008:2226:00
8:22
-
10K
6.21 mi11:47:4351:578:2225:57
8:21
-0:01
15K
9.32 mi12:13:591:18:138:2426:16
8:27
+0:06
20K
12.43 mi12:40:241:44:388:2526:25
8:30
+0:03
Half
13.11 mi12:46:131:50:278:265:49
8:32
+0:02
25K
15.53 mi13:06:532:11:078:2620:40
8:31
-0:01
30K
18.64 mi13:34:162:38:308:3027:23
8:49
+0:18
20M
20.00 mi13:46:212:50:358:3212:05
8:54
+0:05
21M
21.00 mi13:55:473:00:018:349:26
9:26
+0:32
35K
21.75 mi14:02:243:06:388:356:37
8:51
-0:35
23M
23.00 mi14:13:333:17:478:3611:09
8:54
+0:03
24M
24.00 mi14:22:063:26:208:368:33
8:33
-0:21
40K
24.85 mi14:29:473:34:018:377:41
8:59
+0:26
25.2M
25.20 mi14:33:093:37:238:383:22
9:46
+0:47
Finish
26.22 mi14:41:453:45:598:388:36
8:26
-1:20

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

8:21 /mi

Average Pace

8:38 /mi

Slowest Pace

9:46 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

3:33:11

94% of race

Time at Steady Pace

12:48

6% of race

Time at Slower Pace

0:00

0% of race

Average Pace: 8:37 /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 mi11:21:4626:008:2226:00
8:22
#19131
10K
6.21 mi11:47:4351:578:2225:57
8:21
#19003
15K
9.32 mi12:13:591:18:138:2426:16
8:27
#18979
20K
12.43 mi12:40:241:44:388:2526:25
8:30
#18774
Half
13.11 mi12:46:131:50:278:265:49
8:32
#18813
25K
15.53 mi13:06:532:11:078:2620:40
8:31
#18535
30K
18.64 mi13:34:162:38:308:3027:23
8:49
#18145
20M
20.00 mi13:46:212:50:358:3212:05
8:54
#17959
21M
21.00 mi13:55:473:00:018:349:26
9:26
#17838
35K
21.75 mi14:02:243:06:388:356:37
8:51
#17809
23M
23.00 mi14:13:333:17:478:3611:09
8:54
#17663
24M
24.00 mi14:22:063:26:208:368:33
8:33
#17517
40K
24.85 mi14:29:473:34:018:377:41
8:59
#17474
25.2M
25.20 mi14:33:093:37:238:383:22
9:46
#17454
Finish
26.22 mi14:41:453:45:598:388:36
8:26
#17374
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF50-54Seg. OverallSeg. FemalesSeg. F50-54
5K3.11 mi3.11 mi191316980698019061(Top 67%)6932(Top 57%)6932(Top 532%)
10K6.21 mi3.10 mi19003+1286906+746906+7418894(Top 67%)6819(Top 56%)6819(Top 523%)
15K9.32 mi3.11 mi18979+246900+66900+619061(Top 67%)6932(Top 57%)6932(Top 532%)
20K12.43 mi3.11 mi18774+2056773+1276773+12718270(Top 64%)6486(Top 53%)6486(Top 498%)
Half13.11 mi0.68 mi18813-396802-296802-2919379(Top 68%)7100(Top 58%)7100(Top 545%)
25K15.53 mi2.42 mi18535+2786659+1436659+14317356(Top 61%)6058(Top 50%)6058(Top 465%)
30K18.64 mi3.11 mi18145+3906478+1816478+18116695(Top 59%)5860(Top 48%)5860(Top 450%)
20M20.00 mi1.36 mi17959+1866398+806398+8016213(Top 57%)5732(Top 47%)5732(Top 440%)
21M21.00 mi1.00 mi17838+1216340+586340+5815808(Top 56%)5611(Top 46%)5611(Top 431%)
35K21.75 mi0.75 mi17809+296337+36337+317503(Top 62%)6629(Top 54%)6629(Top 509%)
23M23.00 mi1.25 mi17663+1466309+286309+2815728(Top 55%)5737(Top 47%)5737(Top 440%)
24M24.00 mi1.00 mi17517+1466258+516258+5114865(Top 52%)5320(Top 44%)5320(Top 408%)
40K24.85 mi0.85 mi17474+436264-66264-616247(Top 57%)6179(Top 51%)6179(Top 474%)
25.2M25.20 mi0.35 mi17454+206258+66258+615971(Top 56%)6076(Top 50%)6076(Top 466%)
Finish26.22 mi1.02 mi17374+806239+196239+1915859(Top 56%)5948(Top 49%)5948(Top 456%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 67%
×21story building
+97ft-345ft

Overall

19061

Females

6932

F50-54

6932

5K→10K

3.1 - 6.2 mi

Top 67%
×5story building
+79ft-138ft

Overall

18894

Females

6819

F50-54

6819

10K→15K

6.2 - 9.3 mi

Top 67%
×3story building
+67ft-78ft

Overall

19061

Females

6932

F50-54

6932

15K→20K

9.3 - 12.4 mi

Top 64%
×5story building
+106ft-86ft

Overall

18270

Females

6486

F50-54

6486

20K→Half

12.4 - 13.1 mi

Top 68%
×2story building
+19ft-37ft

Overall

19379

Females

7100

F50-54

7100

Half→25K

13.1 - 15.5 mi

Top 61%
×4story building
+66ft-88ft

Overall

17356

Females

6058

F50-54

6058

25K→30K

15.5 - 18.6 mi

Top 59%
×9story building
+181ft-148ft

Overall

16695

Females

5860

F50-54

5860

30K→20M

18.6 - 20.0 mi

Top 57%
×5story building
+64ft-50ft

Overall

16213

Females

5732

F50-54

5732

20M→21M

20.0 - 21.0 mi

Top 56%
×8story building
+106ft-24ft

Overall

15808

Females

5611

F50-54

5611

21M→35K

21.0 - 21.8 mi

Top 62%
×7story building
+17ft-86ft

Overall

17503

Females

6629

F50-54

6629

35K→23M

21.8 - 23.0 mi

Top 55%
×5story building
+23ft-63ft

Overall

15728

Females

5737

F50-54

5737

23M→24M

23.0 - 24.0 mi

Top 52%
×6story building
+12ft-82ft

Overall

14865

Females

5320

F50-54

5320

24M→40K

24.0 - 24.9 mi

Top 57%
×1story
+6ft-20ft

Overall

16247

Females

6179

F50-54

6179

40K→25.2M

24.9 - 25.2 mi

Top 56%
×1story
+13ft-16ft

Overall

15971

Females

6076

F50-54

6076

25.2M→Finish

25.2 - 26.2 mi

Top 56%
×2story building
+22ft-21ft

Overall

15859

Females

5948

F50-54

5948

Passing Analysis

Category:
Athletes Passed
2643
Passed By
886
Net Change
+1757
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#19131
5K → 10K326198+128#19131#19003
10K → 15K210186+24#19003#18979
15K → 20K29388+205#18979#18774
20K → Half2362-39#18774#18813
Half → 25K30628+278#18813#18535
25K → 30K45767+390#18535#18145
30K → 20M21529+186#18145#17959
20M → 21M16241+121#17959#17838
21M → 35K8354+29#17838#17809
35K → 23M18034+146#17809#17663
23M → 24M16014+146#17663#17517
24M → 40K8946+43#17517#17474
40K → 25.2M3414+20#17474#17454
25.2M → Finish10525+80#17454#17374
TOTALS2643886+1757
📊

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