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BOSTON MARATHON 2025

Marissa Fletcher

Bib: 21364•F

MA

0:00
0:00
/ mi
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Overall
#0 / 28404
Gender (Female)
#0 / 12228
Division (F18-39)
#0 / 5469
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
8:21/mi
25:55
↑ 97↓ 3451.5%
10K· 6.21 mi
8:16/mi
51:37
↑ 79↓ 1380.4%
15K· 9.32 mi
8:19/mi
1:17:28
↑ 67↓ 78
20K· 12.43 mi
8:52/mi
1:45:02
↑ 106↓ 860.1%
Half· 13.11 mi
8:12/mi
1:50:38
↑ 19↓ 370.5%
25K· 15.53 mi
8:35/mi
2:11:27
↑ 66↓ 880.2%
30K· 18.64 mi
9:20/mi
2:40:26
↑ 181↓ 1480.2%
20M
9:16/mi
2:53:02
↑ 64↓ 500.2%
21M
10:19/mi
3:03:21
↑ 106↓ 241.6%
35K· 21.75 mi
9:16/mi
3:10:17
↑ 17↓ 861.7%
23M
10:18/mi
3:23:11
↑ 23↓ 630.6%
24M
9:15/mi
3:32:26
↓ 821.3%
40K· 24.85 mi
9:23/mi
3:40:27
↓ 200.3%
25.2M
10:41/mi
3:44:08
↑ 13↓ 160.2%
Finish· 26.22 mi
9:48/mi
3:54:07
↑ 22↓ 21

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:50:38
Pace8:26 /mi
2nd Half
Distance13.11 mi
Time2:03:29
Pace9:25 /mi
📊Positive Split: 11.6% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:18:2425:558:2125:55
8:21
-
10K
6.21 mi11:44:0651:378:1825:42
8:16
-0:05
15K
9.32 mi12:09:571:17:288:1925:51
8:19
+0:03
20K
12.43 mi12:37:311:45:028:2727:34
8:52
+0:33
Half
13.11 mi12:43:071:50:388:265:36
8:12
-0:40
25K
15.53 mi13:03:562:11:278:2820:49
8:35
+0:23
30K
18.64 mi13:32:552:40:268:3628:59
9:20
+0:45
20M
20.00 mi13:45:312:53:028:3912:36
9:16
-0:04
21M
21.00 mi13:55:503:03:218:4410:19
10:19
+1:03
35K
21.75 mi14:02:463:10:178:456:56
9:16
-1:03
23M
23.00 mi14:15:403:23:118:5012:54
10:18
+1:02
24M
24.00 mi14:24:553:32:268:519:15
9:15
-1:03
40K
24.85 mi14:32:563:40:278:528:01
9:23
+0:08
25.2M
25.20 mi14:36:373:44:088:543:41
10:41
+1:18
Finish
26.22 mi14:46:363:54:078:569:59
9:48
-0:53

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

8:12 /mi

Average Pace

8:56 /mi

Slowest Pace

10:41 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

2:11:27

56% of race

Time at Steady Pace

1:05:47

28% of race

Time at Slower Pace

36:53

16% of race

Average Pace: 8:56 /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 mi11:18:2425:558:2125:55
8:21
#18984
10K
6.21 mi11:44:0651:378:1825:42
8:16
#18667
15K
9.32 mi12:09:571:17:288:1925:51
8:19
#18476
20K
12.43 mi12:37:311:45:028:2727:34
8:52
#18966
Half
13.11 mi12:43:071:50:388:265:36
8:12
#18884
25K
15.53 mi13:03:562:11:278:2820:49
8:35
#18676
30K
18.64 mi13:32:552:40:268:3628:59
9:20
#18801
20M
20.00 mi13:45:312:53:028:3912:36
9:16
#18729
21M
21.00 mi13:55:503:03:218:4410:19
10:19
#18795
35K
21.75 mi14:02:463:10:178:456:56
9:16
#18829
23M
23.00 mi14:15:403:23:118:5012:54
10:18
#19073
24M
24.00 mi14:24:553:32:268:519:15
9:15
#19051
40K
24.85 mi14:32:563:40:278:528:01
9:23
#18984
25.2M
25.20 mi14:36:373:44:088:543:41
10:41
#19004
Finish
26.22 mi14:46:363:54:078:569:59
9:48
#19160
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF18-39Seg. OverallSeg. FemalesSeg. F18-39
5K3.11 mi3.11 mi189846900690018201(Top 64%)6441(Top 53%)6441(Top 118%)
10K6.21 mi3.10 mi18667+3176720+1806720+18018384(Top 65%)6534(Top 53%)6534(Top 119%)
15K9.32 mi3.11 mi18476+1916611+1096611+10918201(Top 64%)6441(Top 53%)6441(Top 118%)
20K12.43 mi3.11 mi18966-4906884-2736884-27320343(Top 72%)7675(Top 63%)7675(Top 140%)
Half13.11 mi0.68 mi18884+826837+476837+4717405(Top 61%)6004(Top 49%)6004(Top 110%)
25K15.53 mi2.42 mi18676+2086735+1026735+10217743(Top 62%)6279(Top 51%)6279(Top 115%)
30K18.64 mi3.11 mi18801-1256827-926827-9219252(Top 68%)7256(Top 59%)7256(Top 133%)
20M20.00 mi1.36 mi18729+726820+76820+718185(Top 64%)6825(Top 56%)6825(Top 125%)
21M21.00 mi1.00 mi18795-666885-656885-6519436(Top 68%)7577(Top 62%)7577(Top 139%)
35K21.75 mi0.75 mi18829-346923-386923-3819465(Top 69%)7697(Top 63%)7697(Top 141%)
23M23.00 mi1.25 mi19073-2447087-1647087-16421423(Top 75%)8768(Top 72%)8768(Top 160%)
24M24.00 mi1.00 mi19051+227096-97096-918604(Top 65%)7345(Top 60%)7345(Top 134%)
40K24.85 mi0.85 mi18984+677090+67090+618203(Top 64%)7227(Top 59%)7227(Top 132%)
25.2M25.20 mi0.35 mi19004-207111-217111-2119682(Top 69%)7993(Top 65%)7993(Top 146%)
Finish26.22 mi1.02 mi19160-1567222-1117222-11122273(Top 78%)9306(Top 76%)9306(Top 170%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 64%
×21story building
+97ft-345ft

Overall

18201

Females

6441

F18-39

6441

5K→10K

3.1 - 6.2 mi

Top 65%
×5story building
+79ft-138ft

Overall

18384

Females

6534

F18-39

6534

10K→15K

6.2 - 9.3 mi

Top 64%
×3story building
+67ft-78ft

Overall

18201

Females

6441

F18-39

6441

15K→20K

9.3 - 12.4 mi

Top 72%
×5story building
+106ft-86ft

Overall

20343

Females

7675

F18-39

7675

20K→Half

12.4 - 13.1 mi

Top 61%
×2story building
+19ft-37ft

Overall

17405

Females

6004

F18-39

6004

Half→25K

13.1 - 15.5 mi

Top 62%
×4story building
+66ft-88ft

Overall

17743

Females

6279

F18-39

6279

25K→30K

15.5 - 18.6 mi

Top 68%
×9story building
+181ft-148ft

Overall

19252

Females

7256

F18-39

7256

30K→20M

18.6 - 20.0 mi

Top 64%
×5story building
+64ft-50ft

Overall

18185

Females

6825

F18-39

6825

20M→21M

20.0 - 21.0 mi

Top 68%
×8story building
+106ft-24ft

Overall

19436

Females

7577

F18-39

7577

21M→35K

21.0 - 21.8 mi

Top 69%
×7story building
+17ft-86ft

Overall

19465

Females

7697

F18-39

7697

35K→23M

21.8 - 23.0 mi

Top 75%
×5story building
+23ft-63ft

Overall

21423

Females

8768

F18-39

8768

23M→24M

23.0 - 24.0 mi

Top 65%
×6story building
+12ft-82ft

Overall

18604

Females

7345

F18-39

7345

24M→40K

24.0 - 24.9 mi

Top 64%
×1story
+6ft-20ft

Overall

18203

Females

7227

F18-39

7227

40K→25.2M

24.9 - 25.2 mi

Top 69%
×1story
+13ft-16ft

Overall

19682

Females

7993

F18-39

7993

25.2M→Finish

25.2 - 26.2 mi

Top 78%
×2story building
+22ft-21ft

Overall

22273

Females

9306

F18-39

9306

Passing Analysis

Category:
Athletes Passed
1898
Passed By
2074
Net Change
-176
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#18984
5K → 10K460143+317#18984#18667
10K → 15K28998+191#18667#18476
15K → 20K85575-490#18476#18966
20K → Half853+82#18966#18884
Half → 25K26052+208#18884#18676
25K → 30K201326-125#18676#18801
30K → 20M13159+72#18801#18729
20M → 21M87153-66#18729#18795
21M → 35K4680-34#18795#18829
35K → 23M40284-244#18829#19073
23M → 24M7452+22#19073#19051
24M → 40K10336+67#19051#18984
40K → 25.2M2444-20#18984#19004
25.2M → Finish13169-156#19004#19160
TOTALS18982074-176
📊

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