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BOSTON MARATHON 2025

Erin Niemeyer

Bib: 21200•F

NV

0:00
0:00
/ mi
Masters
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Overall
#0 / 28404
Gender (Female)
#0 / 12228
Top 37%
Masters (Masters Women)
#0 / 6759
Top 22%
Division (F50-54)
#0 / 1303
Top 14%
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
7:48/mi
24:14
↑ 97↓ 3451.5%
10K· 6.21 mi
8:00/mi
49:06
↑ 79↓ 1380.4%
15K· 9.32 mi
7:58/mi
1:13:52
↑ 67↓ 78
20K· 12.43 mi
8:05/mi
1:39:00
↑ 106↓ 860.1%
Half· 13.11 mi
7:53/mi
1:44:23
↑ 19↓ 370.5%
25K· 15.53 mi
8:17/mi
2:04:27
↑ 66↓ 880.2%
30K· 18.64 mi
8:35/mi
2:31:06
↑ 181↓ 1480.2%
20M
8:24/mi
2:42:31
↑ 64↓ 500.2%
21M
9:01/mi
2:51:32
↑ 106↓ 241.6%
35K· 21.75 mi
8:01/mi
2:57:32
↑ 17↓ 861.7%
23M
8:22/mi
3:08:01
↑ 23↓ 630.6%
24M
8:09/mi
3:16:10
↓ 821.3%
40K· 24.85 mi
8:07/mi
3:23:06
↓ 200.3%
25.2M
8:56/mi
3:26:11
↑ 13↓ 160.2%
Finish· 26.22 mi
7:39/mi
3:33:59
↑ 22↓ 21

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:44:23
Pace7:58 /mi
2nd Half
Distance13.11 mi
Time1:49:36
Pace8:22 /mi
📊Positive Split: 5.0% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:17:3224:147:4824:14
7:48
-
10K
6.21 mi11:42:2449:067:5424:52
8:00
+0:12
15K
9.32 mi12:07:101:13:527:5624:46
7:58
-0:02
20K
12.43 mi12:32:181:39:007:5825:08
8:05
+0:07
Half
13.11 mi12:37:411:44:237:585:23
7:53
-0:12
25K
15.53 mi12:57:452:04:278:0120:04
8:17
+0:24
30K
18.64 mi13:24:242:31:068:0626:39
8:35
+0:18
20M
20.00 mi13:35:492:42:318:0811:25
8:24
-0:11
21M
21.00 mi13:44:502:51:328:109:01
9:01
+0:37
35K
21.75 mi13:50:502:57:328:106:00
8:01
-1:00
23M
23.00 mi14:01:193:08:018:1010:29
8:22
+0:21
24M
24.00 mi14:09:283:16:108:108:09
8:09
-0:13
40K
24.85 mi14:16:243:23:068:106:56
8:07
-0:02
25.2M
25.20 mi14:19:293:26:118:113:05
8:56
+0:49
Finish
26.22 mi14:27:173:33:598:107:48
7:39
-1:17

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

7:39 /mi

Average Pace

8:10 /mi

Slowest Pace

9:01 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

2:55:14

82% of race

Time at Steady Pace

38:45

18% of race

Time at Slower Pace

0:00

0% of race

Average Pace: 8:10 /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 mi11:17:3224:147:4824:14
7:48
#14823
10K
6.21 mi11:42:2449:067:5424:52
8:00
#15695
15K
9.32 mi12:07:101:13:527:5624:46
7:58
#15719
20K
12.43 mi12:32:181:39:007:5825:08
8:05
#15689
Half
13.11 mi12:37:411:44:237:585:23
7:53
#15644
25K
15.53 mi12:57:452:04:278:0120:04
8:17
#15638
30K
18.64 mi13:24:242:31:068:0626:39
8:35
#15550
20M
20.00 mi13:35:492:42:318:0811:25
8:24
#15326
21M
21.00 mi13:44:502:51:328:109:01
9:01
#15161
35K
21.75 mi13:50:502:57:328:106:00
8:01
#15045
23M
23.00 mi14:01:193:08:018:1010:29
8:22
#14839
24M
24.00 mi14:09:283:16:108:108:09
8:09
#14702
40K
24.85 mi14:16:243:23:068:106:56
8:07
#14537
25.2M
25.20 mi14:19:293:26:118:113:05
8:56
#14471
Finish
26.22 mi14:27:173:33:598:107:48
7:39
#14289
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF50-54Seg. OverallSeg. FemalesSeg. F50-54
5K3.11 mi3.11 mi148234420442015828(Top 56%)5053(Top 41%)5053(Top 388%)
10K6.21 mi3.10 mi15695-8724955-5354955-53516522(Top 58%)5432(Top 44%)5432(Top 417%)
15K9.32 mi3.11 mi15719-244964-94964-915828(Top 56%)5053(Top 41%)5053(Top 388%)
20K12.43 mi3.11 mi15689+304975-114975-1115578(Top 55%)4954(Top 41%)4954(Top 380%)
Half13.11 mi0.68 mi15644+454960+154960+1515059(Top 53%)4642(Top 38%)4642(Top 356%)
25K15.53 mi2.42 mi15638+64963-34963-315767(Top 56%)5170(Top 42%)5170(Top 397%)
30K18.64 mi3.11 mi15550+884973-104973-1015252(Top 54%)5045(Top 41%)5045(Top 387%)
20M20.00 mi1.36 mi15326+2244873+1004873+10013187(Top 46%)4079(Top 33%)4079(Top 313%)
21M21.00 mi1.00 mi15161+1654814+594814+5913637(Top 48%)4432(Top 36%)4432(Top 340%)
35K21.75 mi0.75 mi15045+1164767+474767+4712448(Top 44%)3883(Top 32%)3883(Top 298%)
23M23.00 mi1.25 mi14839+2064675+924675+9212526(Top 44%)4011(Top 33%)4011(Top 308%)
24M24.00 mi1.00 mi14702+1374631+444631+4412266(Top 43%)3936(Top 32%)3936(Top 302%)
40K24.85 mi0.85 mi14537+1654569+624569+6210997(Top 39%)3414(Top 28%)3414(Top 262%)
25.2M25.20 mi0.35 mi14471+664543+264543+2611556(Top 41%)3793(Top 31%)3793(Top 291%)
Finish26.22 mi1.02 mi14289+1824473+704473+7010400(Top 37%)3186(Top 26%)3186(Top 245%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 56%
×21story building
+97ft-345ft

Overall

15828

Females

5053

F50-54

5053

5K→10K

3.1 - 6.2 mi

Top 58%
×5story building
+79ft-138ft

Overall

16522

Females

5432

F50-54

5432

10K→15K

6.2 - 9.3 mi

Top 56%
×3story building
+67ft-78ft

Overall

15828

Females

5053

F50-54

5053

15K→20K

9.3 - 12.4 mi

Top 55%
×5story building
+106ft-86ft

Overall

15578

Females

4954

F50-54

4954

20K→Half

12.4 - 13.1 mi

Top 53%
×2story building
+19ft-37ft

Overall

15059

Females

4642

F50-54

4642

Half→25K

13.1 - 15.5 mi

Top 56%
×4story building
+66ft-88ft

Overall

15767

Females

5170

F50-54

5170

25K→30K

15.5 - 18.6 mi

Top 54%
×9story building
+181ft-148ft

Overall

15252

Females

5045

F50-54

5045

30K→20M

18.6 - 20.0 mi

Top 46%
×5story building
+64ft-50ft

Overall

13187

Females

4079

F50-54

4079

20M→21M

20.0 - 21.0 mi

Top 48%
×8story building
+106ft-24ft

Overall

13637

Females

4432

F50-54

4432

21M→35K

21.0 - 21.8 mi

Top 44%
×7story building
+17ft-86ft

Overall

12448

Females

3883

F50-54

3883

35K→23M

21.8 - 23.0 mi

Top 44%
×5story building
+23ft-63ft

Overall

12526

Females

4011

F50-54

4011

23M→24M

23.0 - 24.0 mi

Top 43%
×6story building
+12ft-82ft

Overall

12266

Females

3936

F50-54

3936

24M→40K

24.0 - 24.9 mi

Top 39%
×1story
+6ft-20ft

Overall

10997

Females

3414

F50-54

3414

40K→25.2M

24.9 - 25.2 mi

Top 41%
×1story
+13ft-16ft

Overall

11556

Females

3793

F50-54

3793

25.2M→Finish

25.2 - 26.2 mi

Top 37%
×2story building
+22ft-21ft

Overall

10400

Females

3186

F50-54

3186

Passing Analysis

Category:
Athletes Passed
2410
Passed By
1876
Net Change
+534
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#14823
5K → 10K83955-872#14823#15695
10K → 15K201225-24#15695#15719
15K → 20K223193+30#15719#15689
20K → Half5611+45#15689#15644
Half → 25K184178+6#15644#15638
25K → 30K281193+88#15638#15550
30K → 20M24420+224#15550#15326
20M → 21M19732+165#15326#15161
21M → 35K1259+116#15161#15045
35K → 23M22923+206#15045#14839
23M → 24M15114+137#14839#14702
24M → 40K1738+165#14702#14537
40K → 25.2M726+66#14537#14471
25.2M → Finish1919+182#14471#14289
TOTALS24101876+534
📊

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