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BOSTON MARATHON 2025

Jamie Merritt

Bib: 18988•F

MO

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
8:35/mi
26:39
↑ 97↓ 3451.5%
10K· 6.21 mi
8:46/mi
53:53
↑ 79↓ 1380.4%
15K· 9.32 mi
9:17/mi
1:22:44
↑ 67↓ 78
20K· 12.43 mi
8:46/mi
1:49:58
↑ 106↓ 860.1%
Half· 13.11 mi
8:39/mi
1:55:52
↑ 19↓ 370.5%
25K· 15.53 mi
8:55/mi
2:17:30
↑ 66↓ 880.2%
30K· 18.64 mi
9:29/mi
2:46:57
↑ 181↓ 1480.2%
20M
9:43/mi
3:00:09
↑ 64↓ 500.2%
21M
10:23/mi
3:10:32
↑ 106↓ 241.6%
35K· 21.75 mi
9:15/mi
3:17:27
↑ 17↓ 861.7%
23M
9:37/mi
3:29:29
↑ 23↓ 630.6%
24M
9:40/mi
3:39:09
↓ 821.3%
40K· 24.85 mi
9:13/mi
3:47:02
↓ 200.3%
25.2M
9:43/mi
3:50:23
↑ 13↓ 160.2%
Finish· 26.22 mi
8:48/mi
3:59:21
↑ 22↓ 21

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:55:52
Pace8:50 /mi
2nd Half
Distance13.11 mi
Time2:03:29
Pace9:25 /mi
📊Positive Split: 6.6% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:17:5626:398:3526:39
8:35
-
10K
6.21 mi11:45:1053:538:4027:14
8:46
+0:11
15K
9.32 mi12:14:011:22:448:5328:51
9:17
+0:31
20K
12.43 mi12:41:151:49:588:5127:14
8:46
-0:31
Half
13.11 mi12:47:091:55:528:505:54
8:39
-0:07
25K
15.53 mi13:08:472:17:308:5121:38
8:55
+0:16
30K
18.64 mi13:38:142:46:578:5729:27
9:29
+0:34
20M
20.00 mi13:51:263:00:099:0013:12
9:43
+0:14
21M
21.00 mi14:01:493:10:329:0410:23
10:23
+0:40
35K
21.75 mi14:08:443:17:279:056:55
9:15
-1:08
23M
23.00 mi14:20:463:29:299:0612:02
9:37
+0:22
24M
24.00 mi14:30:263:39:099:089:40
9:40
+0:03
40K
24.85 mi14:38:193:47:029:087:53
9:13
-0:27
25.2M
25.20 mi14:41:403:50:239:093:21
9:43
+0:30
Finish
26.22 mi14:50:383:59:219:088:58
8:48
-0:55

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

8:35 /mi

Average Pace

9:08 /mi

Slowest Pace

10:23 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

1:57:37

49% of race

Time at Steady Pace

1:13:06

31% of race

Time at Slower Pace

48:38

20% of race

Average Pace: 9:08 /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 mi11:17:5626:398:3526:39
8:35
#20349
10K
6.21 mi11:45:1053:538:4027:14
8:46
#20758
15K
9.32 mi12:14:011:22:448:5328:51
9:17
#21690
20K
12.43 mi12:41:151:49:588:5127:14
8:46
#21170
Half
13.11 mi12:47:091:55:528:505:54
8:39
#21131
25K
15.53 mi13:08:472:17:308:5121:38
8:55
#20877
30K
18.64 mi13:38:142:46:578:5729:27
9:29
#20667
20M
20.00 mi13:51:263:00:099:0013:12
9:43
#20596
21M
21.00 mi14:01:493:10:329:0410:23
10:23
#20533
35K
21.75 mi14:08:443:17:279:056:55
9:15
#20492
23M
23.00 mi14:20:463:29:299:0612:02
9:37
#20414
24M
24.00 mi14:30:263:39:099:089:40
9:40
#20433
40K
24.85 mi14:38:193:47:029:087:53
9:13
#20335
25.2M
25.20 mi14:41:403:50:239:093:21
9:43
#20278
Finish
26.22 mi14:50:383:59:219:088:58
8:48
#20227
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF18-39Seg. OverallSeg. FemalesSeg. F18-39
5K3.11 mi3.11 mi203497715771523172(Top 82%)9189(Top 75%)9189(Top 168%)
10K6.21 mi3.10 mi20758-4097916-2017916-20121234(Top 75%)8161(Top 67%)8161(Top 149%)
15K9.32 mi3.11 mi21690-9328424-5088424-50823172(Top 82%)9189(Top 75%)9189(Top 168%)
20K12.43 mi3.11 mi21170+5208122+3028122+30219779(Top 70%)7361(Top 60%)7361(Top 135%)
Half13.11 mi0.68 mi21131+398096+268096+2620106(Top 71%)7546(Top 62%)7546(Top 138%)
25K15.53 mi2.42 mi20877+2547971+1257971+12519545(Top 69%)7288(Top 60%)7288(Top 133%)
30K18.64 mi3.11 mi20667+2107910+617910+6119861(Top 70%)7589(Top 62%)7589(Top 139%)
20M20.00 mi1.36 mi20596+717883+277883+2719998(Top 70%)7788(Top 64%)7788(Top 142%)
21M21.00 mi1.00 mi20533+637872+117872+1119660(Top 69%)7717(Top 63%)7717(Top 141%)
35K21.75 mi0.75 mi20492+417862+107862+1019382(Top 68%)7657(Top 63%)7657(Top 140%)
23M23.00 mi1.25 mi20414+787840+227840+2219133(Top 67%)7577(Top 62%)7577(Top 139%)
24M24.00 mi1.00 mi20433-197867-277867-2720286(Top 71%)8233(Top 67%)8233(Top 151%)
40K24.85 mi0.85 mi20335+987837+307837+3017485(Top 62%)6861(Top 56%)6861(Top 125%)
25.2M25.20 mi0.35 mi20278+577815+227815+2215798(Top 56%)6009(Top 49%)6009(Top 110%)
Finish26.22 mi1.02 mi20227+517796+197796+1918075(Top 64%)7132(Top 58%)7132(Top 130%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 82%
×21story building
+97ft-345ft

Overall

23172

Females

9189

F18-39

9189

5K→10K

3.1 - 6.2 mi

Top 75%
×5story building
+79ft-138ft

Overall

21234

Females

8161

F18-39

8161

10K→15K

6.2 - 9.3 mi

Top 82%
×3story building
+67ft-78ft

Overall

23172

Females

9189

F18-39

9189

15K→20K

9.3 - 12.4 mi

Top 70%
×5story building
+106ft-86ft

Overall

19779

Females

7361

F18-39

7361

20K→Half

12.4 - 13.1 mi

Top 71%
×2story building
+19ft-37ft

Overall

20106

Females

7546

F18-39

7546

Half→25K

13.1 - 15.5 mi

Top 69%
×4story building
+66ft-88ft

Overall

19545

Females

7288

F18-39

7288

25K→30K

15.5 - 18.6 mi

Top 70%
×9story building
+181ft-148ft

Overall

19861

Females

7589

F18-39

7589

30K→20M

18.6 - 20.0 mi

Top 70%
×5story building
+64ft-50ft

Overall

19998

Females

7788

F18-39

7788

20M→21M

20.0 - 21.0 mi

Top 69%
×8story building
+106ft-24ft

Overall

19660

Females

7717

F18-39

7717

21M→35K

21.0 - 21.8 mi

Top 68%
×7story building
+17ft-86ft

Overall

19382

Females

7657

F18-39

7657

35K→23M

21.8 - 23.0 mi

Top 67%
×5story building
+23ft-63ft

Overall

19133

Females

7577

F18-39

7577

23M→24M

23.0 - 24.0 mi

Top 71%
×6story building
+12ft-82ft

Overall

20286

Females

8233

F18-39

8233

24M→40K

24.0 - 24.9 mi

Top 62%
×1story
+6ft-20ft

Overall

17485

Females

6861

F18-39

6861

40K→25.2M

24.9 - 25.2 mi

Top 56%
×1story
+13ft-16ft

Overall

15798

Females

6009

F18-39

6009

25.2M→Finish

25.2 - 26.2 mi

Top 64%
×2story building
+22ft-21ft

Overall

18075

Females

7132

F18-39

7132

Passing Analysis

Category:
Athletes Passed
2122
Passed By
2000
Net Change
+122
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#20349
5K → 10K138547-409#20349#20758
10K → 15K39971-932#20758#21690
15K → 20K53919+520#21690#21170
20K → Half5920+39#21170#21131
Half → 25K27925+254#21131#20877
25K → 30K320110+210#20877#20667
30K → 20M13261+71#20667#20596
20M → 21M11350+63#20596#20533
21M → 35K7332+41#20533#20492
35K → 23M12143+78#20492#20414
23M → 24M4867-19#20414#20433
24M → 40K11416+98#20433#20335
40K → 25.2M636+57#20335#20278
25.2M → Finish8433+51#20278#20227
TOTALS21222000+122
📊

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