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BOSTON MARATHON 2025

Melissa Clemens

Bib: 23805•F

VA

0:00
0:00
/ mi
Masters
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Overall
#0 / 28404
Gender (Female)
#0 / 12228
Top 43%
Masters (Masters Women)
#0 / 6759
Top 29%
Division (F50-54)
#0 / 1303
Top 22%
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
8:18/mi
25:46
↑ 97↓ 3451.5%
10K· 6.21 mi
8:05/mi
50:54
↑ 79↓ 1380.4%
15K· 9.32 mi
8:07/mi
1:16:06
↑ 67↓ 78
20K· 12.43 mi
8:15/mi
1:41:45
↑ 106↓ 860.1%
Half· 13.11 mi
8:01/mi
1:47:13
↑ 19↓ 370.5%
25K· 15.53 mi
8:13/mi
2:07:09
↑ 66↓ 880.2%
30K· 18.64 mi
8:28/mi
2:33:27
↑ 181↓ 1480.2%
20M
8:26/mi
2:44:55
↑ 64↓ 500.2%
21M
9:31/mi
2:54:26
↑ 106↓ 241.6%
35K· 21.75 mi
8:31/mi
3:00:48
↑ 17↓ 861.7%
23M
8:41/mi
3:11:40
↑ 23↓ 630.6%
24M
8:36/mi
3:20:16
↓ 821.3%
40K· 24.85 mi
8:33/mi
3:27:35
↓ 200.3%
25.2M
9:05/mi
3:30:43
↑ 13↓ 160.2%
Finish· 26.22 mi
8:10/mi
3:39:02
↑ 22↓ 21

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:47:13
Pace8:11 /mi
2nd Half
Distance13.11 mi
Time1:51:49
Pace8:32 /mi
📊Positive Split: 4.3% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:27:1225:468:1825:46
8:18
-
10K
6.21 mi11:52:2050:548:1125:08
8:05
-0:13
15K
9.32 mi12:17:321:16:068:1025:12
8:07
+0:02
20K
12.43 mi12:43:111:41:458:1125:39
8:15
+0:08
Half
13.11 mi12:48:391:47:138:115:28
8:01
-0:14
25K
15.53 mi13:08:352:07:098:1119:56
8:13
+0:12
30K
18.64 mi13:34:532:33:278:1426:18
8:28
+0:15
20M
20.00 mi13:46:212:44:558:1511:28
8:26
-0:02
21M
21.00 mi13:55:522:54:268:189:31
9:31
+1:05
35K
21.75 mi14:02:143:00:488:196:22
8:31
-1:00
23M
23.00 mi14:13:063:11:408:2010:52
8:41
+0:10
24M
24.00 mi14:21:423:20:168:218:36
8:36
-0:05
40K
24.85 mi14:29:013:27:358:217:19
8:33
-0:03
25.2M
25.20 mi14:32:093:30:438:223:08
9:05
+0:32
Finish
26.22 mi14:40:283:39:028:228:19
8:10
-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

8:01 /mi

Average Pace

8:22 /mi

Slowest Pace

9:31 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

3:26:23

94% of race

Time at Steady Pace

3:08

1% of race

Time at Slower Pace

9:31

4% of race

Average Pace: 8:21 /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 mi11:27:1225:468:1825:46
8:18
#18671
10K
6.21 mi11:52:2050:548:1125:08
8:05
#17931
15K
9.32 mi12:17:321:16:068:1025:12
8:07
#17526
20K
12.43 mi12:43:111:41:458:1125:39
8:15
#17260
Half
13.11 mi12:48:391:47:138:115:28
8:01
#17189
25K
15.53 mi13:08:352:07:098:1119:56
8:13
#16868
30K
18.64 mi13:34:532:33:278:1426:18
8:28
#16418
20M
20.00 mi13:46:212:44:558:1511:28
8:26
#16178
21M
21.00 mi13:55:522:54:268:189:31
9:31
#16120
35K
21.75 mi14:02:143:00:488:196:22
8:31
#16074
23M
23.00 mi14:13:063:11:408:2010:52
8:41
#15910
24M
24.00 mi14:21:423:20:168:218:36
8:36
#15865
40K
24.85 mi14:29:013:27:358:217:19
8:33
#15755
25.2M
25.20 mi14:32:093:30:438:223:08
9:05
#15690
Finish
26.22 mi14:40:283:39:028:228:19
8:10
#15620
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF50-54Seg. OverallSeg. FemalesSeg. F50-54
5K3.11 mi3.11 mi186716717671716819(Top 59%)5622(Top 46%)5622(Top 431%)
10K6.21 mi3.10 mi17931+7406280+4376280+43717129(Top 60%)5775(Top 47%)5775(Top 443%)
15K9.32 mi3.11 mi17526+4056026+2546026+25416819(Top 59%)5622(Top 46%)5622(Top 431%)
20K12.43 mi3.11 mi17260+2665892+1345892+13416671(Top 59%)5586(Top 46%)5586(Top 429%)
Half13.11 mi0.68 mi17189+715854+385854+3816066(Top 57%)5227(Top 43%)5227(Top 401%)
25K15.53 mi2.42 mi16868+3215685+1695685+16915460(Top 54%)4994(Top 41%)4994(Top 383%)
30K18.64 mi3.11 mi16418+4505478+2075478+20714565(Top 51%)4665(Top 38%)4665(Top 358%)
20M20.00 mi1.36 mi16178+2405372+1065372+10613433(Top 47%)4219(Top 35%)4219(Top 324%)
21M21.00 mi1.00 mi16120+585369+35369+316169(Top 57%)5796(Top 47%)5796(Top 445%)
35K21.75 mi0.75 mi16074+465366+35366+315554(Top 55%)5544(Top 45%)5544(Top 425%)
23M23.00 mi1.25 mi15910+1645319+475319+4714448(Top 51%)5037(Top 41%)5037(Top 387%)
24M24.00 mi1.00 mi15865+455301+185301+1815183(Top 53%)5481(Top 45%)5481(Top 421%)
40K24.85 mi0.85 mi15755+1105263+385263+3813823(Top 49%)4871(Top 40%)4871(Top 374%)
25.2M25.20 mi0.35 mi15690+655244+195244+1912394(Top 44%)4193(Top 34%)4193(Top 322%)
Finish26.22 mi1.02 mi15620+705223+215223+2114045(Top 49%)4976(Top 41%)4976(Top 382%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 59%
×21story building
+97ft-345ft

Overall

16819

Females

5622

F50-54

5622

5K→10K

3.1 - 6.2 mi

Top 60%
×5story building
+79ft-138ft

Overall

17129

Females

5775

F50-54

5775

10K→15K

6.2 - 9.3 mi

Top 59%
×3story building
+67ft-78ft

Overall

16819

Females

5622

F50-54

5622

15K→20K

9.3 - 12.4 mi

Top 59%
×5story building
+106ft-86ft

Overall

16671

Females

5586

F50-54

5586

20K→Half

12.4 - 13.1 mi

Top 57%
×2story building
+19ft-37ft

Overall

16066

Females

5227

F50-54

5227

Half→25K

13.1 - 15.5 mi

Top 54%
×4story building
+66ft-88ft

Overall

15460

Females

4994

F50-54

4994

25K→30K

15.5 - 18.6 mi

Top 51%
×9story building
+181ft-148ft

Overall

14565

Females

4665

F50-54

4665

30K→20M

18.6 - 20.0 mi

Top 47%
×5story building
+64ft-50ft

Overall

13433

Females

4219

F50-54

4219

20M→21M

20.0 - 21.0 mi

Top 57%
×8story building
+106ft-24ft

Overall

16169

Females

5796

F50-54

5796

21M→35K

21.0 - 21.8 mi

Top 55%
×7story building
+17ft-86ft

Overall

15554

Females

5544

F50-54

5544

35K→23M

21.8 - 23.0 mi

Top 51%
×5story building
+23ft-63ft

Overall

14448

Females

5037

F50-54

5037

23M→24M

23.0 - 24.0 mi

Top 53%
×6story building
+12ft-82ft

Overall

15183

Females

5481

F50-54

5481

24M→40K

24.0 - 24.9 mi

Top 49%
×1story
+6ft-20ft

Overall

13823

Females

4871

F50-54

4871

40K→25.2M

24.9 - 25.2 mi

Top 44%
×1story
+13ft-16ft

Overall

12394

Females

4193

F50-54

4193

25.2M→Finish

25.2 - 26.2 mi

Top 49%
×2story building
+22ft-21ft

Overall

14045

Females

4976

F50-54

4976

Passing Analysis

Category:
Athletes Passed
3537
Passed By
486
Net Change
+3051
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#18671
5K → 10K80161+740#18671#17931
10K → 15K45146+405#17931#17526
15K → 20K32458+266#17526#17260
20K → Half776+71#17260#17189
Half → 25K34120+321#17189#16868
25K → 30K49848+450#16868#16418
30K → 20M2455+240#16418#16178
20M → 21M12769+58#16178#16120
21M → 35K8640+46#16120#16074
35K → 23M19329+164#16074#15910
23M → 24M9247+45#15910#15865
24M → 40K13323+110#15865#15755
40K → 25.2M705+65#15755#15690
25.2M → Finish9929+70#15690#15620
TOTALS3537486+3051
📊

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