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BOSTON MARATHON 2025

David Clark

Bib: 17790•M

0:00
0:00
/ mi
Masters
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Overall
#0 / 28404
Gender (Male)
#0 / 16105
Masters (Masters Men)
#0 / 10463
Division (M55-59)
#0 / 1648
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
7:33/mi
23:28
↑ 97↓ 3451.5%
10K· 6.21 mi
7:27/mi
46:36
↑ 79↓ 1380.4%
15K· 9.32 mi
7:40/mi
1:10:25
↑ 67↓ 78
20K· 12.43 mi
8:05/mi
1:35:33
↑ 106↓ 860.1%
Half· 13.11 mi
7:52/mi
1:40:55
↑ 19↓ 370.5%
25K· 15.53 mi
8:15/mi
2:00:55
↑ 66↓ 880.2%
30K· 18.64 mi
8:18/mi
2:26:41
↑ 181↓ 1480.2%
20M
10:02/mi
2:40:19
↑ 64↓ 500.2%
21M
11:27/mi
2:51:46
↑ 106↓ 241.6%
35K· 21.75 mi
9:44/mi
2:59:03
↑ 17↓ 861.7%
23M
9:09/mi
3:10:31
↑ 23↓ 630.6%
24M
8:41/mi
3:19:12
↓ 821.3%
40K· 24.85 mi
8:51/mi
3:26:46
↓ 200.3%
25.2M
9:43/mi
3:30:07
↑ 13↓ 160.2%
Finish· 26.22 mi
8:33/mi
3:38:50
↑ 22↓ 21

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:40:55
Pace7:42 /mi
2nd Half
Distance13.11 mi
Time1:57:55
Pace9:00 /mi
📊Positive Split: 16.8% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:13:5423:287:3323:28
7:33
-
10K
6.21 mi11:37:0246:367:3023:08
7:27
-0:06
15K
9.32 mi12:00:511:10:257:3323:49
7:40
+0:13
20K
12.43 mi12:25:591:35:337:4125:08
8:05
+0:25
Half
13.11 mi12:31:211:40:557:425:22
7:52
-0:13
25K
15.53 mi12:51:212:00:557:4720:00
8:15
+0:23
30K
18.64 mi13:17:072:26:417:5225:46
8:18
+0:03
20M
20.00 mi13:30:452:40:198:0113:38
10:02
+1:44
21M
21.00 mi13:42:122:51:468:1111:27
11:27
+1:25
35K
21.75 mi13:49:292:59:038:147:17
9:44
-1:43
23M
23.00 mi14:00:573:10:318:1711:28
9:09
-0:35
24M
24.00 mi14:09:383:19:128:188:41
8:41
-0:28
40K
24.85 mi14:17:123:26:468:197:34
8:51
+0:10
25.2M
25.20 mi14:20:333:30:078:203:21
9:43
+0:52
Finish
26.22 mi14:29:163:38:508:218:43
8:33
-1:10

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

7:27 /mi

Average Pace

8:21 /mi

Slowest Pace

11:27 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

1:15:47

35% of race

Time at Steady Pace

1:35:52

44% of race

Time at Slower Pace

47:11

22% 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 mi11:13:5423:287:3323:28
7:33
#12680
10K
6.21 mi11:37:0246:367:3023:08
7:27
#12127
15K
9.32 mi12:00:511:10:257:3323:49
7:40
#12470
20K
12.43 mi12:25:591:35:337:4125:08
8:05
#13267
Half
13.11 mi12:31:211:40:557:425:22
7:52
#13345
25K
15.53 mi12:51:212:00:557:4720:00
8:15
#13751
30K
18.64 mi13:17:072:26:417:5225:46
8:18
#13631
20M
20.00 mi13:30:452:40:198:0113:38
10:02
#14455
21M
21.00 mi13:42:122:51:468:1111:27
11:27
#15244
35K
21.75 mi13:49:292:59:038:147:17
9:44
#15551
23M
23.00 mi14:00:573:10:318:1711:28
9:09
#15606
24M
24.00 mi14:09:383:19:128:188:41
8:41
#15581
40K
24.85 mi14:17:123:26:468:197:34
8:51
#15545
25.2M
25.20 mi14:20:333:30:078:203:21
9:43
#15544
Finish
26.22 mi14:29:163:38:508:218:43
8:33
#15569
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM55-59Seg. OverallSeg. MalesSeg. M55-59
5K3.11 mi3.11 mi126809499949913174(Top 46%)9595(Top 60%)9595(Top 582%)
10K6.21 mi3.10 mi12127+5539218+2819218+28111599(Top 41%)8959(Top 56%)8959(Top 544%)
15K9.32 mi3.11 mi12470-3439349-1319349-13113174(Top 46%)9595(Top 60%)9595(Top 582%)
20K12.43 mi3.11 mi13267-7979641-2929641-29215566(Top 55%)10573(Top 66%)10573(Top 642%)
Half13.11 mi0.68 mi13345-789671-309671-3014774(Top 52%)10249(Top 64%)10249(Top 622%)
25K15.53 mi2.42 mi13751-4069815-1449815-14415604(Top 55%)10486(Top 65%)10486(Top 636%)
30K18.64 mi3.11 mi13631+1209694+1219694+12113459(Top 47%)9340(Top 58%)9340(Top 567%)
20M20.00 mi1.36 mi14455-82410019-32510019-32521042(Top 74%)12599(Top 78%)12599(Top 765%)
21M21.00 mi1.00 mi15244-78910338-31910338-31922508(Top 79%)13200(Top 82%)13200(Top 801%)
35K21.75 mi0.75 mi15551-30710443-10510443-10521089(Top 74%)12477(Top 77%)12477(Top 757%)
23M23.00 mi1.25 mi15606-5510431+1210431+1217122(Top 60%)10557(Top 66%)10557(Top 641%)
24M24.00 mi1.00 mi15581+2510401+3010401+3015619(Top 55%)9878(Top 61%)9878(Top 599%)
40K24.85 mi0.85 mi15545+3610351+5010351+5015448(Top 54%)9635(Top 60%)9635(Top 585%)
25.2M25.20 mi0.35 mi15544+110340+1110340+1115635(Top 55%)9701(Top 60%)9701(Top 589%)
Finish26.22 mi1.02 mi15569-2510334+610334+616549(Top 58%)10178(Top 63%)10178(Top 618%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 46%
×21story building
+97ft-345ft

Overall

13174

Males

9595

M55-59

9595

5K→10K

3.1 - 6.2 mi

Top 41%
×5story building
+79ft-138ft

Overall

11599

Males

8959

M55-59

8959

10K→15K

6.2 - 9.3 mi

Top 46%
×3story building
+67ft-78ft

Overall

13174

Males

9595

M55-59

9595

15K→20K

9.3 - 12.4 mi

Top 55%
×5story building
+106ft-86ft

Overall

15566

Males

10573

M55-59

10573

20K→Half

12.4 - 13.1 mi

Top 52%
×2story building
+19ft-37ft

Overall

14774

Males

10249

M55-59

10249

Half→25K

13.1 - 15.5 mi

Top 55%
×4story building
+66ft-88ft

Overall

15604

Males

10486

M55-59

10486

25K→30K

15.5 - 18.6 mi

Top 47%
×9story building
+181ft-148ft

Overall

13459

Males

9340

M55-59

9340

30K→20M

18.6 - 20.0 mi

Top 74%
×5story building
+64ft-50ft

Overall

21042

Males

12599

M55-59

12599

20M→21M

20.0 - 21.0 mi

Top 79%
×8story building
+106ft-24ft

Overall

22508

Males

13200

M55-59

13200

21M→35K

21.0 - 21.8 mi

Top 74%
×7story building
+17ft-86ft

Overall

21089

Males

12477

M55-59

12477

35K→23M

21.8 - 23.0 mi

Top 60%
×5story building
+23ft-63ft

Overall

17122

Males

10557

M55-59

10557

23M→24M

23.0 - 24.0 mi

Top 55%
×6story building
+12ft-82ft

Overall

15619

Males

9878

M55-59

9878

24M→40K

24.0 - 24.9 mi

Top 54%
×1story
+6ft-20ft

Overall

15448

Males

9635

M55-59

9635

40K→25.2M

24.9 - 25.2 mi

Top 55%
×1story
+13ft-16ft

Overall

15635

Males

9701

M55-59

9701

25.2M→Finish

25.2 - 26.2 mi

Top 58%
×2story building
+22ft-21ft

Overall

16549

Males

10178

M55-59

10178

Passing Analysis

Category:
Athletes Passed
1565
Passed By
4454
Net Change
-2889
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#12680
5K → 10K63380+553#12680#12127
10K → 15K93436-343#12127#12470
15K → 20K55852-797#12470#13267
20K → Half1290-78#13267#13345
Half → 25K82488-406#13345#13751
25K → 30K291171+120#13751#13631
30K → 20M21845-824#13631#14455
20M → 21M19808-789#14455#15244
21M → 35K15322-307#15244#15551
35K → 23M93148-55#15551#15606
23M → 24M7550+25#15606#15581
24M → 40K8751+36#15581#15545
40K → 25.2M3130+1#15545#15544
25.2M → Finish5883-25#15544#15569
TOTALS15654454-2889
📊

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