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BOSTON MARATHON 2025

Nathalie Guillemette

Bib: 24165•F

QC

0:00
0:00
/ mi
Masters
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Overall
#0 / 28404
Gender (Female)
#0 / 12228
Masters (Masters Women)
#0 / 6759
Division (F55-59)
#0 / 994
Top 37%
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
8:25/mi
26:10
↑ 97↓ 3451.5%
10K· 6.21 mi
8:45/mi
53:20
↑ 79↓ 1380.4%
15K· 9.32 mi
8:51/mi
1:20:51
↑ 67↓ 78
20K· 12.43 mi
8:59/mi
1:48:45
↑ 106↓ 860.1%
Half· 13.11 mi
8:52/mi
1:54:48
↑ 19↓ 370.5%
25K· 15.53 mi
9:07/mi
2:16:54
↑ 66↓ 880.2%
30K· 18.64 mi
9:22/mi
2:45:59
↑ 181↓ 1480.2%
20M
9:21/mi
2:58:41
↑ 64↓ 500.2%
21M
9:57/mi
3:08:38
↑ 106↓ 241.6%
35K· 21.75 mi
8:44/mi
3:15:10
↑ 17↓ 861.7%
23M
9:07/mi
3:26:35
↑ 23↓ 630.6%
24M
8:53/mi
3:35:28
↓ 821.3%
40K· 24.85 mi
8:58/mi
3:43:08
↓ 200.3%
25.2M
9:54/mi
3:46:33
↑ 13↓ 160.2%
Finish· 26.22 mi
8:52/mi
3:55:35
↑ 22↓ 21

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:54:48
Pace8:45 /mi
2nd Half
Distance13.11 mi
Time2:00:47
Pace9:13 /mi
📊Positive Split: 5.2% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:25:2226:108:2526:10
8:25
-
10K
6.21 mi11:52:3253:208:3527:10
8:45
+0:20
15K
9.32 mi12:20:031:20:518:4027:31
8:51
+0:06
20K
12.43 mi12:47:571:48:458:4527:54
8:59
+0:08
Half
13.11 mi12:54:001:54:488:456:03
8:52
-0:07
25K
15.53 mi13:16:062:16:548:4922:06
9:07
+0:15
30K
18.64 mi13:45:112:45:598:5429:05
9:22
+0:15
20M
20.00 mi13:57:532:58:418:5612:42
9:21
-0:01
21M
21.00 mi14:07:503:08:388:599:57
9:57
+0:36
35K
21.75 mi14:14:223:15:108:586:32
8:44
-1:13
23M
23.00 mi14:25:473:26:358:5911:25
9:07
+0:23
24M
24.00 mi14:34:403:35:288:598:53
8:53
-0:14
40K
24.85 mi14:42:203:43:088:597:40
8:58
+0:05
25.2M
25.20 mi14:45:453:46:338:593:25
9:54
+0:56
Finish
26.22 mi14:54:473:55:359:009:02
8:52
-1:02

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

8:25 /mi

Average Pace

9:00 /mi

Slowest Pace

9:57 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

3:00:26

77% of race

Time at Steady Pace

45:12

19% of race

Time at Slower Pace

9:57

4% of race

Average Pace: 8:59 /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 mi11:25:2226:108:2526:10
8:25
#19444
10K
6.21 mi11:52:3253:208:3527:10
8:45
#20311
15K
9.32 mi12:20:031:20:518:4027:31
8:51
#20610
20K
12.43 mi12:47:571:48:458:4527:54
8:59
#20681
Half
13.11 mi12:54:001:54:488:456:03
8:52
#20709
25K
15.53 mi13:16:062:16:548:4922:06
9:07
#20687
30K
18.64 mi13:45:112:45:598:5429:05
9:22
#20390
20M
20.00 mi13:57:532:58:418:5612:42
9:21
#20238
21M
21.00 mi14:07:503:08:388:599:57
9:57
#20104
35K
21.75 mi14:14:223:15:108:586:32
8:44
#19989
23M
23.00 mi14:25:473:26:358:5911:25
9:07
#19828
24M
24.00 mi14:34:403:35:288:598:53
8:53
#19683
40K
24.85 mi14:42:203:43:088:597:40
8:58
#19553
25.2M
25.20 mi14:45:453:46:338:593:25
9:54
#19507
Finish
26.22 mi14:54:473:55:359:009:02
8:52
#19468
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF55-59Seg. OverallSeg. FemalesSeg. F55-59
5K3.11 mi3.11 mi194447163716321316(Top 75%)8174(Top 67%)8174(Top 822%)
10K6.21 mi3.10 mi20311-8677653-4907653-49021126(Top 74%)8095(Top 66%)8095(Top 814%)
15K9.32 mi3.11 mi20610-2997816-1637816-16321316(Top 75%)8174(Top 67%)8174(Top 822%)
20K12.43 mi3.11 mi20681-717859-437859-4320862(Top 73%)7977(Top 65%)7977(Top 803%)
Half13.11 mi0.68 mi20709-287879-207879-2021241(Top 75%)8155(Top 67%)8155(Top 820%)
25K15.53 mi2.42 mi20687+227868+117868+1120427(Top 72%)7770(Top 64%)7770(Top 782%)
30K18.64 mi3.11 mi20390+2977757+1117757+11119393(Top 68%)7332(Top 60%)7332(Top 738%)
20M20.00 mi1.36 mi20238+1527687+707687+7018529(Top 65%)7022(Top 57%)7022(Top 706%)
21M21.00 mi1.00 mi20104+1347640+477640+4718132(Top 64%)6869(Top 56%)6869(Top 691%)
35K21.75 mi0.75 mi19989+1157583+577583+5716954(Top 60%)6324(Top 52%)6324(Top 636%)
23M23.00 mi1.25 mi19828+1617526+577526+5716958(Top 60%)6433(Top 53%)6433(Top 647%)
24M24.00 mi1.00 mi19683+1457468+587468+5816799(Top 59%)6389(Top 52%)6389(Top 643%)
40K24.85 mi0.85 mi19553+1307408+607408+6016160(Top 57%)6141(Top 50%)6141(Top 618%)
25.2M25.20 mi0.35 mi19507+467394+147394+1416675(Top 59%)6443(Top 53%)6443(Top 648%)
Finish26.22 mi1.02 mi19468+397393+17393+118392(Top 65%)7290(Top 60%)7290(Top 733%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 75%
×21story building
+97ft-345ft

Overall

21316

Females

8174

F55-59

8174

5K→10K

3.1 - 6.2 mi

Top 74%
×5story building
+79ft-138ft

Overall

21126

Females

8095

F55-59

8095

10K→15K

6.2 - 9.3 mi

Top 75%
×3story building
+67ft-78ft

Overall

21316

Females

8174

F55-59

8174

15K→20K

9.3 - 12.4 mi

Top 73%
×5story building
+106ft-86ft

Overall

20862

Females

7977

F55-59

7977

20K→Half

12.4 - 13.1 mi

Top 75%
×2story building
+19ft-37ft

Overall

21241

Females

8155

F55-59

8155

Half→25K

13.1 - 15.5 mi

Top 72%
×4story building
+66ft-88ft

Overall

20427

Females

7770

F55-59

7770

25K→30K

15.5 - 18.6 mi

Top 68%
×9story building
+181ft-148ft

Overall

19393

Females

7332

F55-59

7332

30K→20M

18.6 - 20.0 mi

Top 65%
×5story building
+64ft-50ft

Overall

18529

Females

7022

F55-59

7022

20M→21M

20.0 - 21.0 mi

Top 64%
×8story building
+106ft-24ft

Overall

18132

Females

6869

F55-59

6869

21M→35K

21.0 - 21.8 mi

Top 60%
×7story building
+17ft-86ft

Overall

16954

Females

6324

F55-59

6324

35K→23M

21.8 - 23.0 mi

Top 60%
×5story building
+23ft-63ft

Overall

16958

Females

6433

F55-59

6433

23M→24M

23.0 - 24.0 mi

Top 59%
×6story building
+12ft-82ft

Overall

16799

Females

6389

F55-59

6389

24M→40K

24.0 - 24.9 mi

Top 57%
×1story
+6ft-20ft

Overall

16160

Females

6141

F55-59

6141

40K→25.2M

24.9 - 25.2 mi

Top 59%
×1story
+13ft-16ft

Overall

16675

Females

6443

F55-59

6443

25.2M→Finish

25.2 - 26.2 mi

Top 65%
×2story building
+22ft-21ft

Overall

18392

Females

7290

F55-59

7290

Passing Analysis

Category:
Athletes Passed
1927
Passed By
1951
Net Change
-24
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#19444
5K → 10K52919-867#19444#20311
10K → 15K106405-299#20311#20610
15K → 20K156227-71#20610#20681
20K → Half2149-28#20681#20709
Half → 25K163141+22#20709#20687
25K → 30K36972+297#20687#20390
30K → 20M17927+152#20390#20238
20M → 21M16228+134#20238#20104
21M → 35K1227+115#20104#19989
35K → 23M17615+161#19989#19828
23M → 24M1527+145#19828#19683
24M → 40K1366+130#19683#19553
40K → 25.2M548+46#19553#19507
25.2M → Finish7940+39#19507#19468
TOTALS19271951-24
📊

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