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BOSTON MARATHON 2025

Konstantinos Sparakis

Bib: 12034•M

0:00
0:00
/ mi
Masters
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Overall
#0 / 28404
Top 39%
Gender (Male)
#0 / 16105
Masters (Masters Men)
#0 / 10463
Top 41%
Division (M45-49)
#0 / 2386
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
7:45/mi
24:05
↑ 97↓ 3451.5%
10K· 6.21 mi
7:43/mi
48:03
↑ 79↓ 1380.4%
15K· 9.32 mi
7:35/mi
1:11:37
↑ 67↓ 78
20K· 12.43 mi
7:37/mi
1:35:18
↑ 106↓ 860.1%
Half· 13.11 mi
7:36/mi
1:40:29
↑ 19↓ 370.5%
25K· 15.53 mi
7:44/mi
1:59:15
↑ 66↓ 880.2%
30K· 18.64 mi
7:44/mi
2:23:17
↑ 181↓ 1480.2%
20M
7:41/mi
2:33:44
↑ 64↓ 500.2%
21M
8:07/mi
2:41:51
↑ 106↓ 241.6%
35K· 21.75 mi
7:40/mi
2:47:35
↑ 17↓ 861.7%
23M
7:40/mi
2:57:11
↑ 23↓ 630.6%
24M
7:45/mi
3:04:56
↓ 821.3%
40K· 24.85 mi
8:08/mi
3:11:53
↓ 200.3%
25.2M
8:42/mi
3:14:53
↑ 13↓ 160.2%
Finish· 26.22 mi
7:53/mi
3:22:55
↑ 22↓ 21

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:40:29
Pace7:40 /mi
2nd Half
Distance13.11 mi
Time1:42:26
Pace7:49 /mi
📊Positive Split: 1.9% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:52:2324:057:4524:05
7:45
-
10K
6.21 mi11:16:2148:037:4423:58
7:43
-0:02
15K
9.32 mi11:39:551:11:377:4123:34
7:35
-0:08
20K
12.43 mi12:03:361:35:187:4023:41
7:37
+0:02
Half
13.11 mi12:08:471:40:297:405:11
7:36
-0:01
25K
15.53 mi12:27:331:59:157:4118:46
7:44
+0:08
30K
18.64 mi12:51:352:23:177:4124:02
7:44
0:00
20M
20.00 mi13:02:022:33:447:4110:27
7:41
-0:03
21M
21.00 mi13:10:092:41:517:428:07
8:07
+0:26
35K
21.75 mi13:15:532:47:357:425:44
7:40
-0:27
23M
23.00 mi13:25:292:57:117:429:36
7:40
0:00
24M
24.00 mi13:33:143:04:567:427:45
7:45
+0:05
40K
24.85 mi13:40:113:11:537:436:57
8:08
+0:23
25.2M
25.20 mi13:43:113:14:537:443:00
8:42
+0:34
Finish
26.22 mi13:51:133:22:557:458:02
7:53
-0:49

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

7:35 /mi

Average Pace

7:45 /mi

Slowest Pace

8:42 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

3:19:55

99% of race

Time at Steady Pace

3:00

1% of race

Time at Slower Pace

0:00

0% of race

Average Pace: 7:44 /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 mi10:52:2324:057:4524:05
7:45
#14375
10K
6.21 mi11:16:2148:037:4423:58
7:43
#14166
15K
9.32 mi11:39:551:11:377:4123:34
7:35
#13598
20K
12.43 mi12:03:361:35:187:4023:41
7:37
#13089
Half
13.11 mi12:08:471:40:297:405:11
7:36
#13052
25K
15.53 mi12:27:331:59:157:4118:46
7:44
#12807
30K
18.64 mi12:51:352:23:177:4124:02
7:44
#12126
20M
20.00 mi13:02:022:33:447:4110:27
7:41
#11772
21M
21.00 mi13:10:092:41:517:428:07
8:07
#11535
35K
21.75 mi13:15:532:47:357:425:44
7:40
#11445
23M
23.00 mi13:25:292:57:117:429:36
7:40
#11158
24M
24.00 mi13:33:143:04:567:427:45
7:45
#11033
40K
24.85 mi13:40:113:11:537:436:57
8:08
#11022
25.2M
25.20 mi13:43:113:14:537:443:00
8:42
#10977
Finish
26.22 mi13:51:133:22:557:458:02
7:53
#11003
Faster pace
Steady pace
Slower pace
Est.Checkpoint not recorded (estimated)
~Segment time uses estimated prior

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM45-49Seg. OverallSeg. MalesSeg. M45-49
5K3.11 mi3.11 mi14375101841018412454(Top 44%)9274(Top 58%)9274(Top 389%)
10K6.21 mi3.10 mi14166+20910084+10010084+10013999(Top 49%)9992(Top 62%)9992(Top 419%)
15K9.32 mi3.11 mi13598+5689813+2719813+27112454(Top 44%)9274(Top 58%)9274(Top 389%)
20K12.43 mi3.11 mi13089+5099557+2569557+25611751(Top 41%)8850(Top 55%)8850(Top 371%)
Half13.11 mi0.68 mi13052+379537+209537+2012480(Top 44%)9210(Top 57%)9210(Top 386%)
25K15.53 mi2.42 mi12807+2459405+1329405+13211838(Top 42%)8766(Top 54%)8766(Top 367%)
30K18.64 mi3.11 mi12126+6819032+3739032+3739465(Top 33%)7404(Top 46%)7404(Top 310%)
20M20.00 mi1.36 mi11772+3548833+1998833+1998278(Top 29%)6615(Top 41%)6615(Top 277%)
21M21.00 mi1.00 mi11535+2378676+1578676+1578060(Top 28%)6295(Top 39%)6295(Top 264%)
35K21.75 mi0.75 mi11445+908603+738603+739780(Top 34%)7258(Top 45%)7258(Top 304%)
23M23.00 mi1.25 mi11158+2878433+1708433+1707699(Top 27%)6001(Top 37%)6001(Top 252%)
24M24.00 mi1.00 mi11033+1258330+1038330+1039449(Top 33%)6883(Top 43%)6883(Top 288%)
40K24.85 mi0.85 mi11022+118290+408290+4011061(Top 39%)7597(Top 47%)7597(Top 318%)
25.2M25.20 mi0.35 mi10977+458251+398251+399961(Top 35%)6937(Top 43%)6937(Top 291%)
Finish26.22 mi1.02 mi11003-268231+208231+2012025(Top 42%)8047(Top 50%)8047(Top 337%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 44%
×21story building
+97ft-345ft

Overall

12454

Males

9274

M45-49

9274

5K→10K

3.1 - 6.2 mi

Top 49%
×5story building
+79ft-138ft

Overall

13999

Males

9992

M45-49

9992

10K→15K

6.2 - 9.3 mi

Top 44%
×3story building
+67ft-78ft

Overall

12454

Males

9274

M45-49

9274

15K→20K

9.3 - 12.4 mi

Top 41%
×5story building
+106ft-86ft

Overall

11751

Males

8850

M45-49

8850

20K→Half

12.4 - 13.1 mi

Top 44%
×2story building
+19ft-37ft

Overall

12480

Males

9210

M45-49

9210

Half→25K

13.1 - 15.5 mi

Top 42%
×4story building
+66ft-88ft

Overall

11838

Males

8766

M45-49

8766

25K→30K

15.5 - 18.6 mi

Top 33%
×9story building
+181ft-148ft

Overall

9465

Males

7404

M45-49

7404

30K→20M

18.6 - 20.0 mi

Top 29%
×5story building
+64ft-50ft

Overall

8278

Males

6615

M45-49

6615

20M→21M

20.0 - 21.0 mi

Top 28%
×8story building
+106ft-24ft

Overall

8060

Males

6295

M45-49

6295

21M→35K

21.0 - 21.8 mi

Top 34%
×7story building
+17ft-86ft

Overall

9780

Males

7258

M45-49

7258

35K→23M

21.8 - 23.0 mi

Top 27%
×5story building
+23ft-63ft

Overall

7699

Males

6001

M45-49

6001

23M→24M

23.0 - 24.0 mi

Top 33%
×6story building
+12ft-82ft

Overall

9449

Males

6883

M45-49

6883

24M→40K

24.0 - 24.9 mi

Top 39%
×1story
+6ft-20ft

Overall

11061

Males

7597

M45-49

7597

40K→25.2M

24.9 - 25.2 mi

Top 35%
×1story
+13ft-16ft

Overall

9961

Males

6937

M45-49

6937

25.2M→Finish

25.2 - 26.2 mi

Top 42%
×2story building
+22ft-21ft

Overall

12025

Males

8047

M45-49

8047

Passing Analysis

Category:
Athletes Passed
3921
Passed By
549
Net Change
+3372
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#14375
5K → 10K395186+209#14375#14166
10K → 15K59931+568#14166#13598
15K → 20K52314+509#13598#13089
20K → Half6124+37#13089#13052
Half → 25K28035+245#13052#12807
25K → 30K69312+681#12807#12126
30K → 20M3584+354#12126#11772
20M → 21M25114+237#11772#11535
21M → 35K11222+90#11535#11445
35K → 23M2958+287#11445#11158
23M → 24M15530+125#11158#11033
24M → 40K8271+11#11033#11022
40K → 25.2M6116+45#11022#10977
25.2M → Finish5682-26#10977#11003
TOTALS3921549+3372
📊

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