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BOSTON MARATHON 2025

Petra Henriksson Nousiainen

Bib: 21253•F

0:00
0:00
/ mi
Masters
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Overall
#0 / 28404
Top 46%
Gender (Female)
#0 / 12228
Top 31%
Masters (Masters Women)
#0 / 6759
Top 16%
Division (F50-54)
#0 / 1303
Top 9%
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
7:47/mi
24:12
↑ 97↓ 3451.5%
10K· 6.21 mi
7:55/mi
48:47
↑ 79↓ 1380.4%
15K· 9.32 mi
8:01/mi
1:13:41
↑ 67↓ 78
20K· 12.43 mi
8:05/mi
1:38:47
↑ 106↓ 860.1%
Half· 13.11 mi
7:56/mi
1:44:12
↑ 19↓ 370.5%
25K· 15.53 mi
8:08/mi
2:03:55
↑ 66↓ 880.2%
30K· 18.64 mi
8:15/mi
2:29:34
↑ 181↓ 1480.2%
20M
8:06/mi
2:40:35
↑ 64↓ 500.2%
21M
8:35/mi
2:49:10
↑ 106↓ 241.6%
35K· 21.75 mi
7:34/mi
2:54:50
↑ 17↓ 861.7%
23M
7:49/mi
3:04:37
↑ 23↓ 630.6%
24M
7:31/mi
3:12:08
↓ 821.3%
40K· 24.85 mi
7:43/mi
3:18:44
↓ 200.3%
25.2M
8:33/mi
3:21:41
↑ 13↓ 160.2%
Finish· 26.22 mi
7:22/mi
3:29:11
↑ 22↓ 21

The Course

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Half Splits

1st Half· via Half⚖️ Balanced
Distance13.11 mi
Time1:44:12
Pace7:57 /mi
2nd Half⚖️ Balanced
Distance13.11 mi
Time1:44:59
Pace8:01 /mi
📊Even Split: Consistent pacing between halves

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:16:3224:127:4724:12
7:47
-
10K
6.21 mi11:41:0748:477:5124:35
7:55
+0:08
15K
9.32 mi12:06:011:13:417:5424:54
8:01
+0:06
20K
12.43 mi12:31:071:38:477:5725:06
8:05
+0:04
Half
13.11 mi12:36:321:44:127:575:25
7:56
-0:09
25K
15.53 mi12:56:152:03:557:5919:43
8:08
+0:12
30K
18.64 mi13:21:542:29:348:0125:39
8:15
+0:07
20M
20.00 mi13:32:552:40:358:0211:01
8:06
-0:09
21M
21.00 mi13:41:302:49:108:038:35
8:35
+0:29
35K
21.75 mi13:47:102:54:508:025:40
7:34
-1:01
23M
23.00 mi13:56:573:04:378:029:47
7:49
+0:15
24M
24.00 mi14:04:283:12:088:007:31
7:31
-0:18
40K
24.85 mi14:11:043:18:448:006:36
7:43
+0:12
25.2M
25.20 mi14:14:013:21:418:002:57
8:33
+0:50
Finish
26.22 mi14:21:313:29:117:597:30
7:22
-1:11

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

7:22 /mi

Average Pace

7:59 /mi

Slowest Pace

8:35 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

2:32:17

73% of race

Time at Steady Pace

56:54

27% of race

Time at Slower Pace

0:00

0% of race

Average Pace: 7:59 /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 mi11:16:3224:127:4724:12
7:47
#14722
10K
6.21 mi11:41:0748:477:5124:35
7:55
#15255
15K
9.32 mi12:06:011:13:417:5424:54
8:01
#15536
20K
12.43 mi12:31:071:38:477:5725:06
8:05
#15534
Half
13.11 mi12:36:321:44:127:575:25
7:56
#15519
25K
15.53 mi12:56:152:03:557:5919:43
8:08
#15376
30K
18.64 mi13:21:542:29:348:0125:39
8:15
#14920
20M
20.00 mi13:32:552:40:358:0211:01
8:06
#14574
21M
21.00 mi13:41:302:49:108:038:35
8:35
#14316
35K
21.75 mi13:47:102:54:508:025:40
7:34
#14085
23M
23.00 mi13:56:573:04:378:029:47
7:49
#13730
24M
24.00 mi14:04:283:12:088:007:31
7:31
#13433
40K
24.85 mi14:11:043:18:448:006:36
7:43
#13231
25.2M
25.20 mi14:14:013:21:418:002:57
8:33
#13166
Finish
26.22 mi14:21:313:29:117:597:30
7:22
#12972
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF50-54Seg. OverallSeg. FemalesSeg. F50-54
5K3.11 mi3.11 mi147224359435916153(Top 57%)5226(Top 43%)5226(Top 401%)
10K6.21 mi3.10 mi15255-5334694-3354694-33515747(Top 55%)4976(Top 41%)4976(Top 382%)
15K9.32 mi3.11 mi15536-2814868-1744868-17416153(Top 57%)5226(Top 43%)5226(Top 401%)
20K12.43 mi3.11 mi15534+24886-184886-1815494(Top 55%)4905(Top 40%)4905(Top 376%)
Half13.11 mi0.68 mi15519+154872+144872+1415423(Top 54%)4823(Top 39%)4823(Top 370%)
25K15.53 mi2.42 mi15376+1434818+544818+5414843(Top 52%)4661(Top 38%)4661(Top 358%)
30K18.64 mi3.11 mi14920+4564626+1924626+19213205(Top 46%)3943(Top 32%)3943(Top 303%)
20M20.00 mi1.36 mi14574+3464455+1714455+17111192(Top 39%)3040(Top 25%)3040(Top 233%)
21M21.00 mi1.00 mi14316+2584333+1224333+12211023(Top 39%)3118(Top 25%)3118(Top 239%)
35K21.75 mi0.75 mi14085+2314233+1004233+1009243(Top 33%)2265(Top 19%)2265(Top 174%)
23M23.00 mi1.25 mi13730+3554075+1584075+1588727(Top 31%)2146(Top 18%)2146(Top 165%)
24M24.00 mi1.00 mi13433+2973939+1363939+1367885(Top 28%)1834(Top 15%)1834(Top 141%)
40K24.85 mi0.85 mi13231+2023856+833856+838283(Top 29%)2132(Top 17%)2132(Top 164%)
25.2M25.20 mi0.35 mi13166+653832+243832+249228(Top 32%)2665(Top 22%)2665(Top 205%)
Finish26.22 mi1.02 mi12972+1943739+933739+938252(Top 29%)2188(Top 18%)2188(Top 168%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 57%
×21story building
+97ft-345ft

Overall

16153

Females

5226

F50-54

5226

5K→10K

3.1 - 6.2 mi

Top 55%
×5story building
+79ft-138ft

Overall

15747

Females

4976

F50-54

4976

10K→15K

6.2 - 9.3 mi

Top 57%
×3story building
+67ft-78ft

Overall

16153

Females

5226

F50-54

5226

15K→20K

9.3 - 12.4 mi

Top 55%
×5story building
+106ft-86ft

Overall

15494

Females

4905

F50-54

4905

20K→Half

12.4 - 13.1 mi

Top 54%
×2story building
+19ft-37ft

Overall

15423

Females

4823

F50-54

4823

Half→25K

13.1 - 15.5 mi

Top 52%
×4story building
+66ft-88ft

Overall

14843

Females

4661

F50-54

4661

25K→30K

15.5 - 18.6 mi

Top 46%
×9story building
+181ft-148ft

Overall

13205

Females

3943

F50-54

3943

30K→20M

18.6 - 20.0 mi

Top 39%
×5story building
+64ft-50ft

Overall

11192

Females

3040

F50-54

3040

20M→21M

20.0 - 21.0 mi

Top 39%
×8story building
+106ft-24ft

Overall

11023

Females

3118

F50-54

3118

21M→35K

21.0 - 21.8 mi

Top 33%
×7story building
+17ft-86ft

Overall

9243

Females

2265

F50-54

2265

35K→23M

21.8 - 23.0 mi

Top 31%
×5story building
+23ft-63ft

Overall

8727

Females

2146

F50-54

2146

23M→24M

23.0 - 24.0 mi

Top 28%
×6story building
+12ft-82ft

Overall

7885

Females

1834

F50-54

1834

24M→40K

24.0 - 24.9 mi

Top 29%
×1story
+6ft-20ft

Overall

8283

Females

2132

F50-54

2132

40K→25.2M

24.9 - 25.2 mi

Top 32%
×1story
+13ft-16ft

Overall

9228

Females

2665

F50-54

2665

25.2M→Finish

25.2 - 26.2 mi

Top 29%
×2story building
+22ft-21ft

Overall

8252

Females

2188

F50-54

2188

Passing Analysis

Category:
Athletes Passed
3208
Passed By
1458
Net Change
+1750
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#14722
5K → 10K122655-533#14722#15255
10K → 15K124405-281#15255#15536
15K → 20K209207+2#15536#15534
20K → Half4530+15#15534#15519
Half → 25K23087+143#15519#15376
25K → 30K49539+456#15376#14920
30K → 20M3515+346#14920#14574
20M → 21M2679+258#14574#14316
21M → 35K2321+231#14316#14085
35K → 23M3605+355#14085#13730
23M → 24M3025+297#13730#13433
24M → 40K2053+202#13433#13231
40K → 25.2M694+65#13231#13166
25.2M → Finish1973+194#13166#12972
TOTALS32081458+1750
📊

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