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BOSTON MARATHON 2025

Melissa Larson

Bib: 21184•F

CA

0:00
0:00
/ mi
Masters
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Overall
#0 / 28404
Gender (Female)
#0 / 12228
Masters (Masters Women)
#0 / 6759
Division (F45-49)
#0 / 1813
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
8:11/mi
25:26
↑ 97↓ 3451.5%
10K· 6.21 mi
8:16/mi
51:06
↑ 79↓ 1380.4%
15K· 9.32 mi
8:21/mi
1:17:01
↑ 67↓ 78
20K· 12.43 mi
8:29/mi
1:43:21
↑ 106↓ 860.1%
Half· 13.11 mi
8:27/mi
1:49:07
↑ 19↓ 370.5%
25K· 15.53 mi
8:50/mi
2:10:33
↑ 66↓ 880.2%
30K· 18.64 mi
9:41/mi
2:40:38
↑ 181↓ 1480.2%
20M
11:43/mi
2:56:34
↑ 64↓ 500.2%
21M
10:46/mi
3:07:20
↑ 106↓ 241.6%
35K· 21.75 mi
10:15/mi
3:15:00
↑ 17↓ 861.7%
23M
10:26/mi
3:28:04
↑ 23↓ 630.6%
24M
10:15/mi
3:38:19
↓ 821.3%
40K· 24.85 mi
10:40/mi
3:47:26
↓ 200.3%
25.2M
11:01/mi
3:51:14
↑ 13↓ 160.2%
Finish· 26.22 mi
9:05/mi
4:00:29
↑ 22↓ 21

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:49:07
Pace8:19 /mi
2nd Half
Distance13.11 mi
Time2:11:22
Pace10:01 /mi
📊Positive Split: 20.4% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:18:3325:268:1125:26
8:11
-
10K
6.21 mi11:44:1351:068:1325:40
8:16
+0:05
15K
9.32 mi12:10:081:17:018:1625:55
8:21
+0:05
20K
12.43 mi12:36:281:43:218:1926:20
8:29
+0:08
Half
13.11 mi12:42:141:49:078:195:46
8:27
-0:02
25K
15.53 mi13:03:402:10:338:2421:26
8:50
+0:23
30K
18.64 mi13:33:452:40:388:3730:05
9:41
+0:51
20M
20.00 mi13:49:412:56:348:5015:56
11:43
+2:02
21M
21.00 mi14:00:273:07:208:5510:46
10:46
-0:57
35K
21.75 mi14:08:073:15:008:587:40
10:15
-0:31
23M
23.00 mi14:21:113:28:049:0313:04
10:26
+0:11
24M
24.00 mi14:31:263:38:199:0610:15
10:15
-0:11
40K
24.85 mi14:40:333:47:269:099:07
10:40
+0:25
25.2M
25.20 mi14:44:213:51:149:113:48
11:01
+0:21
Finish
26.22 mi14:53:364:00:299:119:15
9:05
-1:56

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

8:11 /mi

Average Pace

9:11 /mi

Slowest Pace

11:43 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

2:19:48

58% of race

Time at Steady Pace

48:00

20% of race

Time at Slower Pace

52:41

22% of race

Average Pace: 9:10 /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 mi11:18:3325:268:1125:26
8:11
#18033
10K
6.21 mi11:44:1351:068:1325:40
8:16
#18137
15K
9.32 mi12:10:081:17:018:1625:55
8:21
#18175
20K
12.43 mi12:36:281:43:218:1926:20
8:29
#18106
Half
13.11 mi12:42:141:49:078:195:46
8:27
#18121
25K
15.53 mi13:03:402:10:338:2421:26
8:50
#18297
30K
18.64 mi13:33:452:40:388:3730:05
9:41
#18857
20M
20.00 mi13:49:412:56:348:5015:56
11:43
#19704
21M
21.00 mi14:00:273:07:208:5510:46
10:46
#19813
35K
21.75 mi14:08:073:15:008:587:40
10:15
#19956
23M
23.00 mi14:21:113:28:049:0313:04
10:26
#20132
24M
24.00 mi14:31:263:38:199:0610:15
10:15
#20269
40K
24.85 mi14:40:333:47:269:099:07
10:40
#20406
25.2M
25.20 mi14:44:213:51:149:113:48
11:01
#20443
Finish
26.22 mi14:53:364:00:299:119:15
9:05
#20430
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF45-49Seg. OverallSeg. FemalesSeg. F45-49
5K3.11 mi3.11 mi180336366636618346(Top 65%)6523(Top 53%)6523(Top 360%)
10K6.21 mi3.10 mi18137-1046415-496415-4918326(Top 65%)6505(Top 53%)6505(Top 359%)
15K9.32 mi3.11 mi18175-386434-196434-1918346(Top 65%)6523(Top 53%)6523(Top 360%)
20K12.43 mi3.11 mi18106+696402+326402+3218086(Top 64%)6396(Top 52%)6396(Top 353%)
Half13.11 mi0.68 mi18121-156411-96411-918974(Top 67%)6897(Top 56%)6897(Top 380%)
25K15.53 mi2.42 mi18297-1766527-1166527-11619172(Top 67%)7067(Top 58%)7067(Top 390%)
30K18.64 mi3.11 mi18857-5606862-3356862-33520642(Top 73%)8013(Top 66%)8013(Top 442%)
20M20.00 mi1.36 mi19704-8477378-5167378-51624887(Top 88%)10413(Top 85%)10413(Top 574%)
21M21.00 mi1.00 mi19813-1097466-887466-8820752(Top 73%)8316(Top 68%)8316(Top 459%)
35K21.75 mi0.75 mi19956-1437564-987564-9822561(Top 79%)9309(Top 76%)9309(Top 513%)
23M23.00 mi1.25 mi20132-1767694-1307694-13021843(Top 77%)8982(Top 73%)8982(Top 495%)
24M24.00 mi1.00 mi20269-1377788-947788-9422091(Top 78%)9179(Top 75%)9179(Top 506%)
40K24.85 mi0.85 mi20406-1377872-847872-8422352(Top 79%)9385(Top 77%)9385(Top 518%)
25.2M25.20 mi0.35 mi20443-377897-257897-2520733(Top 73%)8517(Top 70%)8517(Top 470%)
Finish26.22 mi1.02 mi20430+137906-97906-919441(Top 68%)7841(Top 64%)7841(Top 432%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 65%
×21story building
+97ft-345ft

Overall

18346

Females

6523

F45-49

6523

5K→10K

3.1 - 6.2 mi

Top 65%
×5story building
+79ft-138ft

Overall

18326

Females

6505

F45-49

6505

10K→15K

6.2 - 9.3 mi

Top 65%
×3story building
+67ft-78ft

Overall

18346

Females

6523

F45-49

6523

15K→20K

9.3 - 12.4 mi

Top 64%
×5story building
+106ft-86ft

Overall

18086

Females

6396

F45-49

6396

20K→Half

12.4 - 13.1 mi

Top 67%
×2story building
+19ft-37ft

Overall

18974

Females

6897

F45-49

6897

Half→25K

13.1 - 15.5 mi

Top 67%
×4story building
+66ft-88ft

Overall

19172

Females

7067

F45-49

7067

25K→30K

15.5 - 18.6 mi

Top 73%
×9story building
+181ft-148ft

Overall

20642

Females

8013

F45-49

8013

30K→20M

18.6 - 20.0 mi

Top 88%
×5story building
+64ft-50ft

Overall

24887

Females

10413

F45-49

10413

20M→21M

20.0 - 21.0 mi

Top 73%
×8story building
+106ft-24ft

Overall

20752

Females

8316

F45-49

8316

21M→35K

21.0 - 21.8 mi

Top 79%
×7story building
+17ft-86ft

Overall

22561

Females

9309

F45-49

9309

35K→23M

21.8 - 23.0 mi

Top 77%
×5story building
+23ft-63ft

Overall

21843

Females

8982

F45-49

8982

23M→24M

23.0 - 24.0 mi

Top 78%
×6story building
+12ft-82ft

Overall

22091

Females

9179

F45-49

9179

24M→40K

24.0 - 24.9 mi

Top 79%
×1story
+6ft-20ft

Overall

22352

Females

9385

F45-49

9385

40K→25.2M

24.9 - 25.2 mi

Top 73%
×1story
+13ft-16ft

Overall

20733

Females

8517

F45-49

8517

25.2M→Finish

25.2 - 26.2 mi

Top 68%
×2story building
+22ft-21ft

Overall

19441

Females

7841

F45-49

7841

Passing Analysis

Category:
Athletes Passed
1157
Passed By
3554
Net Change
-2397
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#18033
5K → 10K245349-104#18033#18137
10K → 15K172210-38#18137#18175
15K → 20K218149+69#18175#18106
20K → Half3247-15#18106#18121
Half → 25K113289-176#18121#18297
25K → 30K108668-560#18297#18857
30K → 20M12859-847#18857#19704
20M → 21M67176-109#19704#19813
21M → 35K25168-143#19813#19956
35K → 23M39215-176#19956#20132
23M → 24M20157-137#20132#20269
24M → 40K27164-137#20269#20406
40K → 25.2M2158-37#20406#20443
25.2M → Finish5845+13#20443#20430
TOTALS11573554-2397
📊

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