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BOSTON MARATHON 2025

Timo Kamarainen

Bib: 10630•M

0:00
0:00
/ mi
Masters
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Overall
#0 / 28404
Gender (Male)
#0 / 16105
Masters (Masters Men)
#0 / 10463
Division (M50-54)
#0 / 1996
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
6:55/mi
21:28
↑ 97↓ 3451.5%
10K· 6.21 mi
6:44/mi
42:24
↑ 79↓ 1380.4%
15K· 9.32 mi
6:44/mi
1:03:19
↑ 67↓ 78
20K· 12.43 mi
7:08/mi
1:25:28
↑ 106↓ 860.1%
Half· 13.11 mi
6:59/mi
1:30:14
↑ 19↓ 370.5%
25K· 15.53 mi
7:41/mi
1:48:52
↑ 66↓ 880.2%
30K· 18.64 mi
8:26/mi
2:15:03
↑ 181↓ 1480.2%
20M
9:01/mi
2:27:18
↑ 64↓ 500.2%
21M
11:50/mi
2:39:08
↑ 106↓ 241.6%
35K· 21.75 mi
10:48/mi
2:47:13
↑ 17↓ 861.7%
23M
10:48/mi
3:00:44
↑ 23↓ 630.6%
24M
10:57/mi
3:11:41
↓ 821.3%
40K· 24.85 mi
12:02/mi
3:21:58
↓ 200.3%
25.2M
12:14/mi
3:26:11
↑ 13↓ 160.2%
Finish· 26.22 mi
9:41/mi
3:36:03
↑ 22↓ 21

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:30:14
Pace6:53 /mi
2nd Half
Distance13.11 mi
Time2:05:49
Pace9:36 /mi
📊Positive Split: 39.4% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:47:2821:286:5521:28
6:55
-
10K
6.21 mi11:08:2442:246:4920:56
6:44
-0:11
15K
9.32 mi11:29:191:03:196:4820:56
6:44
0:00
20K
12.43 mi11:51:281:25:286:5322:09
7:08
+0:24
Half
13.11 mi11:56:141:30:146:534:46
6:59
-0:09
25K
15.53 mi12:14:521:48:527:0018:38
7:41
+0:42
30K
18.64 mi12:41:032:15:037:1526:11
8:26
+0:45
20M
20.00 mi12:53:182:27:187:2212:15
9:01
+0:35
21M
21.00 mi13:05:082:39:087:3511:50
11:50
+2:49
35K
21.75 mi13:13:132:47:137:418:05
10:48
-1:02
23M
23.00 mi13:26:443:00:447:5113:31
10:48
0:00
24M
24.00 mi13:37:413:11:417:5910:57
10:57
+0:09
40K
24.85 mi13:47:583:21:588:0810:17
12:02
+1:05
25.2M
25.20 mi13:52:113:26:118:114:13
12:14
+0:12
Finish
26.22 mi14:02:033:36:038:159:52
9:41
-2:33

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

6:44 /mi

Average Pace

8:15 /mi

Slowest Pace

12:14 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

1:48:52

50% of race

Time at Steady Pace

48:18

22% of race

Time at Slower Pace

58:53

27% of race

Average Pace: 8:14 /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 mi10:47:2821:286:5521:28
6:55
#7150
10K
6.21 mi11:08:2442:246:4920:56
6:44
#6513
15K
9.32 mi11:29:191:03:196:4820:56
6:44
#6131
20K
12.43 mi11:51:281:25:286:5322:09
7:08
#6656
Half
13.11 mi11:56:141:30:146:534:46
6:59
#6701
25K
15.53 mi12:14:521:48:527:0018:38
7:41
#7318
30K
18.64 mi12:41:032:15:037:1526:11
8:26
#8391
20M
20.00 mi12:53:182:27:187:2212:15
9:01
#9105
21M
21.00 mi13:05:082:39:087:3511:50
11:50
#10510
35K
21.75 mi13:13:132:47:137:418:05
10:48
#11304
23M
23.00 mi13:26:443:00:447:5113:31
10:48
#12409
24M
24.00 mi13:37:413:11:417:5910:57
10:57
#13298
40K
24.85 mi13:47:583:21:588:0810:17
12:02
#14234
25.2M
25.20 mi13:52:113:26:118:114:13
12:14
#14468
Finish
26.22 mi14:02:033:36:038:159:52
9:41
#14845
Faster pace
Steady pace
Slower pace
Est.Checkpoint not recorded (estimated)
~Segment time uses estimated prior

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM50-54Seg. OverallSeg. MalesSeg. M50-54
5K3.11 mi3.11 mi7150641964195417(Top 19%)4977(Top 31%)4977(Top 249%)
10K6.21 mi3.10 mi6513+6375923+4965923+4965673(Top 20%)5203(Top 32%)5203(Top 261%)
15K9.32 mi3.11 mi6131+3825614+3095614+3095417(Top 19%)4977(Top 31%)4977(Top 249%)
20K12.43 mi3.11 mi6656-5256008-3946008-3947692(Top 27%)6675(Top 41%)6675(Top 334%)
Half13.11 mi0.68 mi6701-456050-426050-427514(Top 26%)6604(Top 41%)6604(Top 331%)
25K15.53 mi2.42 mi7318-6176481-4316481-43111426(Top 40%)8592(Top 53%)8592(Top 430%)
30K18.64 mi3.11 mi8391-10737116-6357116-63514305(Top 50%)9733(Top 60%)9733(Top 488%)
20M20.00 mi1.36 mi9105-7147501-3857501-38516838(Top 59%)10735(Top 67%)10735(Top 538%)
21M21.00 mi1.00 mi10510-14058184-6838184-68323266(Top 82%)13566(Top 84%)13566(Top 680%)
35K21.75 mi0.75 mi11304-7948537-3538537-35323789(Top 84%)13787(Top 86%)13787(Top 691%)
23M23.00 mi1.25 mi12409-11059022-4859022-48522752(Top 80%)13222(Top 82%)13222(Top 662%)
24M24.00 mi1.00 mi13298-8899398-3769398-37623881(Top 84%)13762(Top 85%)13762(Top 689%)
40K24.85 mi0.85 mi14234-9369789-3919789-39124960(Top 88%)14240(Top 88%)14240(Top 713%)
25.2M25.20 mi0.35 mi14468-2349884-959884-9523627(Top 83%)13567(Top 84%)13567(Top 680%)
Finish26.22 mi1.02 mi14845-37710019-13510019-13521832(Top 77%)12696(Top 79%)12696(Top 636%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 19%
×21story building
+97ft-345ft

Overall

5417

Males

4977

M50-54

4977

5K→10K

3.1 - 6.2 mi

Top 20%
×5story building
+79ft-138ft

Overall

5673

Males

5203

M50-54

5203

10K→15K

6.2 - 9.3 mi

Top 19%
×3story building
+67ft-78ft

Overall

5417

Males

4977

M50-54

4977

15K→20K

9.3 - 12.4 mi

Top 27%
×5story building
+106ft-86ft

Overall

7692

Males

6675

M50-54

6675

20K→Half

12.4 - 13.1 mi

Top 26%
×2story building
+19ft-37ft

Overall

7514

Males

6604

M50-54

6604

Half→25K

13.1 - 15.5 mi

Top 40%
×4story building
+66ft-88ft

Overall

11426

Males

8592

M50-54

8592

25K→30K

15.5 - 18.6 mi

Top 50%
×9story building
+181ft-148ft

Overall

14305

Males

9733

M50-54

9733

30K→20M

18.6 - 20.0 mi

Top 59%
×5story building
+64ft-50ft

Overall

16838

Males

10735

M50-54

10735

20M→21M

20.0 - 21.0 mi

Top 82%
×8story building
+106ft-24ft

Overall

23266

Males

13566

M50-54

13566

21M→35K

21.0 - 21.8 mi

Top 84%
×7story building
+17ft-86ft

Overall

23789

Males

13787

M50-54

13787

35K→23M

21.8 - 23.0 mi

Top 80%
×5story building
+23ft-63ft

Overall

22752

Males

13222

M50-54

13222

23M→24M

23.0 - 24.0 mi

Top 84%
×6story building
+12ft-82ft

Overall

23881

Males

13762

M50-54

13762

24M→40K

24.0 - 24.9 mi

Top 88%
×1story
+6ft-20ft

Overall

24960

Males

14240

M50-54

14240

40K→25.2M

24.9 - 25.2 mi

Top 83%
×1story
+13ft-16ft

Overall

23627

Males

13567

M50-54

13567

25.2M→Finish

25.2 - 26.2 mi

Top 77%
×2story building
+22ft-21ft

Overall

21832

Males

12696

M50-54

12696

Passing Analysis

Category:
Athletes Passed
1242
Passed By
8935
Net Change
-7695
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#7150
5K → 10K65922+637#7150#6513
10K → 15K40523+382#6513#6131
15K → 20K45570-525#6131#6656
20K → Half1459-45#6656#6701
Half → 25K28645-617#6701#7318
25K → 30K341107-1073#7318#8391
30K → 20M15729-714#8391#9105
20M → 21M21405-1405#9105#10510
21M → 35K2796-794#10510#11304
35K → 23M121117-1105#11304#12409
23M → 24M4893-889#12409#13298
24M → 40K5941-936#13298#14234
40K → 25.2M2236-234#14234#14468
25.2M → Finish15392-377#14468#14845
TOTALS12428935-7695
📊

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