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BOSTON MARATHON 2025

Merika Koday

Bib: 27087•F

WA

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
10:45/mi
33:25
↑ 97↓ 3451.5%
10K· 6.21 mi
10:55/mi
1:07:20
↑ 79↓ 1380.4%
15K· 9.32 mi
10:54/mi
1:41:13
↑ 67↓ 78
20K· 12.43 mi
11:04/mi
2:15:36
↑ 106↓ 860.1%
Half· 13.11 mi
10:42/mi
2:22:54
↑ 19↓ 370.5%
25K· 15.53 mi
11:14/mi
2:50:07
↑ 66↓ 880.2%
30K· 18.64 mi
11:24/mi
3:25:32
↑ 181↓ 1480.2%
20M
11:02/mi
3:40:31
↑ 64↓ 500.2%
21M
11:13/mi
3:51:44
↑ 106↓ 241.6%
35K· 21.75 mi
10:31/mi
3:59:36
↑ 17↓ 861.7%
23M
10:48/mi
4:13:07
↑ 23↓ 630.6%
24M
10:40/mi
4:23:47
↓ 821.3%
40K· 24.85 mi
10:36/mi
4:32:51
↓ 200.3%
25.2M
10:50/mi
4:36:35
↑ 13↓ 160.2%
Finish· 26.22 mi
9:22/mi
4:46:08
↑ 22↓ 21

The Course

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Half Splits

1st Half· via Half⚖️ Balanced
Distance13.11 mi
Time2:22:54
Pace10:54 /mi
2nd Half⚖️ Balanced
Distance13.11 mi
Time2:23:14
Pace10:56 /mi
📊Even Split: Consistent pacing between halves

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:58:4833:2510:4533:25
10:45
-
10K
6.21 mi12:32:431:07:2010:5033:55
10:55
+0:10
15K
9.32 mi13:06:361:41:1310:5233:53
10:54
-0:01
20K
12.43 mi13:40:592:15:3610:5534:23
11:04
+0:10
Half
13.11 mi13:48:172:22:5410:547:18
10:42
-0:22
25K
15.53 mi14:15:302:50:0710:5727:13
11:14
+0:32
30K
18.64 mi14:50:553:25:3211:0235:25
11:24
+0:10
20M
20.00 mi15:05:543:40:3111:0214:59
11:02
-0:22
21M
21.00 mi15:17:073:51:4411:0211:13
11:13
+0:11
35K
21.75 mi15:24:593:59:3611:017:52
10:31
-0:42
23M
23.00 mi15:38:304:13:0711:0013:31
10:48
+0:17
24M
24.00 mi15:49:104:23:4710:5910:40
10:40
-0:08
40K
24.85 mi15:58:144:32:5110:599:04
10:36
-0:04
25.2M
25.20 mi16:01:584:36:3510:593:44
10:50
+0:14
Finish
26.22 mi16:11:314:46:0810:559:33
9:22
-1:28

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

9:22 /mi

Average Pace

10:55 /mi

Slowest Pace

11:24 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

26:29

9% of race

Time at Steady Pace

2:31:25

53% of race

Time at Slower Pace

1:48:14

38% of race

Average Pace: 10:55 /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 mi11:58:4833:2510:4533:25
10:45
#27212
10K
6.21 mi12:32:431:07:2010:5033:55
10:55
#27086
15K
9.32 mi13:06:361:41:1310:5233:53
10:54
#26883
20K
12.43 mi13:40:592:15:3610:5534:23
11:04
#26654
Half
13.11 mi13:48:172:22:5410:547:18
10:42
#26624
25K
15.53 mi14:15:302:50:0710:5727:13
11:14
#26428
30K
18.64 mi14:50:553:25:3211:0235:25
11:24
#26115
20M
20.00 mi15:05:543:40:3111:0214:59
11:02
#25947
21M
21.00 mi15:17:073:51:4411:0211:13
11:13
#25773
35K
21.75 mi15:24:593:59:3611:017:52
10:31
#25708
23M
23.00 mi15:38:304:13:0711:0013:31
10:48
#25588
24M
24.00 mi15:49:104:23:4710:5910:40
10:40
#25497
40K
24.85 mi15:58:144:32:5110:599:04
10:36
#25389
25.2M
25.20 mi16:01:584:36:3510:593:44
10:50
#25331
Finish
26.22 mi16:11:314:46:0810:559:33
9:22
#25248
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF18-39Seg. OverallSeg. FemalesSeg. F18-39
5K3.11 mi3.11 mi27212114521145226544(Top 93%)11094(Top 91%)11094(Top 203%)
10K6.21 mi3.10 mi27086+12611403+4911403+4926940(Top 95%)11330(Top 93%)11330(Top 207%)
15K9.32 mi3.11 mi26883+20311285+11811285+11826544(Top 93%)11094(Top 91%)11094(Top 203%)
20K12.43 mi3.11 mi26654+22911149+13611149+13626100(Top 92%)10863(Top 89%)10863(Top 199%)
Half13.11 mi0.68 mi26624+3011139+1011139+1026073(Top 92%)10867(Top 89%)10867(Top 199%)
25K15.53 mi2.42 mi26428+19611034+10511034+10525504(Top 90%)10571(Top 86%)10571(Top 193%)
30K18.64 mi3.11 mi26115+31310887+14710887+14724696(Top 87%)10236(Top 84%)10236(Top 187%)
20M20.00 mi1.36 mi25947+16810805+8210805+8223626(Top 83%)9756(Top 80%)9756(Top 178%)
21M21.00 mi1.00 mi25773+17410729+7610729+7621930(Top 77%)8939(Top 73%)8939(Top 163%)
35K21.75 mi0.75 mi25708+6510701+2810701+2823175(Top 82%)9647(Top 79%)9647(Top 176%)
23M23.00 mi1.25 mi25588+12010649+5210649+5222725(Top 80%)9461(Top 77%)9461(Top 173%)
24M24.00 mi1.00 mi25497+9110612+3710612+3723225(Top 82%)9752(Top 80%)9752(Top 178%)
40K24.85 mi0.85 mi25389+10810562+5010562+5022181(Top 78%)9303(Top 76%)9303(Top 170%)
25.2M25.20 mi0.35 mi25331+5810529+3310529+3320041(Top 71%)8202(Top 67%)8202(Top 150%)
Finish26.22 mi1.02 mi25248+8310495+3410495+3420642(Top 73%)8474(Top 69%)8474(Top 155%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 93%
×21story building
+97ft-345ft

Overall

26544

Females

11094

F18-39

11094

5K→10K

3.1 - 6.2 mi

Top 95%
×5story building
+79ft-138ft

Overall

26940

Females

11330

F18-39

11330

10K→15K

6.2 - 9.3 mi

Top 93%
×3story building
+67ft-78ft

Overall

26544

Females

11094

F18-39

11094

15K→20K

9.3 - 12.4 mi

Top 92%
×5story building
+106ft-86ft

Overall

26100

Females

10863

F18-39

10863

20K→Half

12.4 - 13.1 mi

Top 92%
×2story building
+19ft-37ft

Overall

26073

Females

10867

F18-39

10867

Half→25K

13.1 - 15.5 mi

Top 90%
×4story building
+66ft-88ft

Overall

25504

Females

10571

F18-39

10571

25K→30K

15.5 - 18.6 mi

Top 87%
×9story building
+181ft-148ft

Overall

24696

Females

10236

F18-39

10236

30K→20M

18.6 - 20.0 mi

Top 83%
×5story building
+64ft-50ft

Overall

23626

Females

9756

F18-39

9756

20M→21M

20.0 - 21.0 mi

Top 77%
×8story building
+106ft-24ft

Overall

21930

Females

8939

F18-39

8939

21M→35K

21.0 - 21.8 mi

Top 82%
×7story building
+17ft-86ft

Overall

23175

Females

9647

F18-39

9647

35K→23M

21.8 - 23.0 mi

Top 80%
×5story building
+23ft-63ft

Overall

22725

Females

9461

F18-39

9461

23M→24M

23.0 - 24.0 mi

Top 82%
×6story building
+12ft-82ft

Overall

23225

Females

9752

F18-39

9752

24M→40K

24.0 - 24.9 mi

Top 78%
×1story
+6ft-20ft

Overall

22181

Females

9303

F18-39

9303

40K→25.2M

24.9 - 25.2 mi

Top 71%
×1story
+13ft-16ft

Overall

20041

Females

8202

F18-39

8202

25.2M→Finish

25.2 - 26.2 mi

Top 73%
×2story building
+22ft-21ft

Overall

20642

Females

8474

F18-39

8474

Passing Analysis

Category:
Athletes Passed
2149
Passed By
185
Net Change
+1964
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#27212
5K → 10K21690+126#27212#27086
10K → 15K23229+203#27086#26883
15K → 20K24314+229#26883#26654
20K → Half366+30#26654#26624
Half → 25K20711+196#26624#26428
25K → 30K3207+313#26428#26115
30K → 20M1757+168#26115#25947
20M → 21M1740+174#25947#25773
21M → 35K738+65#25773#25708
35K → 23M1244+120#25708#25588
23M → 24M943+91#25588#25497
24M → 40K1113+108#25497#25389
40K → 25.2M580+58#25389#25331
25.2M → Finish863+83#25331#25248
TOTALS2149185+1964
📊

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