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Public Race Data

Boston Athletic Association

Boston Athletic Association

Mika Timing

Mika Timing
BOSTON MARATHON 2026

Stefan Calos

Bib: 20922 •M •Age: N/A

VA

Boston Marathon logo
0:00
0:00
/ mi
Masters
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Overall
#0 / 29021
Gender (Male)
#0 / 16340
Masters (Masters Men)
#0 / 10617
Age Group (M60-64)
#0 / 1514
Race Day Weather
51°/41°F
overcast clouds

Race Timeline and Course Information

Your journey through the course with elevation, pacing, and checkpoint details

⏱️ Race Timeline

Watch your race unfold from start to finish

Start
0:00:00
Race begins
5K
25:06
3.11 mi
Rank: #17473
Start → 5K
25:06 | 8:05/mi
10K
50:35
6.21 mi
Rank: #18021 (-548)
5K → 10K
25:29 | 8:13/mi
15K
1:16:10
9.32 mi
Rank: #18217 (-196)
10K → 15K
25:35 | 8:15/mi
20K
1:42:53
12.43 mi
Rank: #18620 (-403)
15K → 20K
26:43 | 8:36/mi
HALF
1:48:56
13.11 mi
Rank: #18834 (-214)
20K → HALF
6:03 | 8:53/mi
25K
2:12:19
15.53 mi
Rank: #19827 (-993)
HALF → 25K
23:23 | 9:39/mi
30K
2:42:38
18.64 mi
Rank: #20460 (-633)
25K → 30K
30:19 | 9:46/mi
20M
2:55:17
20.00 mi
Rank: #20444 (+16)
30K → 20M
12:39 | 9:19/mi
21M
3:05:22
21.00 mi
Rank: #20464 (-20)
20M → 21M
10:05 | 10:05/mi
35K
3:13:24
21.75 mi
Rank: #20715 (-251)
21M → 35K
8:02 | 10:45/mi
23M
3:25:52
23.00 mi
Rank: #20848 (-133)
35K → 23M
12:28 | 9:58/mi
24M
3:35:33
24.00 mi
Rank: #20929 (-81)
23M → 24M
9:41 | 9:41/mi
40K
3:44:09
24.85 mi
Rank: #21014 (-85)
24M → 40K
8:36 | 10:04/mi
25.2M
3:47:44
25.20 mi
Rank: #21013 (+1)
40K → 25.2M
3:35 | 10:24/mi
FINISH
3:57:51
26.22 mi
Rank: #21160 (-147)
25.2M → FINISH
10:07 | 9:56/mi
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Splits & Pacing

Detailed breakdown of your race performance at each timing point

Half Splits

1st HalfFaster
via HALF
Distance13.11 mi
Time1:48:56
Pace8:19 /mi
2nd Half
Distance13.11 mi
Time2:08:55
Pace9:51 /mi
📊Positive Split: 18.3% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:11:3325:068:0525:06
8:05
-
10K
6.21 mi11:37:0250:358:0925:29
8:13
+0:08
15K
9.32 mi12:02:371:16:108:1125:35
8:15
+0:02
20K
12.43 mi12:29:201:42:538:1726:43
8:36
+0:21
HALF
13.11 mi12:35:231:48:568:196:03
8:53
+0:17
25K
15.53 mi12:58:462:12:198:3223:23
9:39
+0:46
30K
18.64 mi13:29:052:42:388:4430:19
9:46
+0:07
20M
20.00 mi13:41:442:55:178:4612:39
9:19
-0:27
21M
21.00 mi13:51:493:05:228:5010:05
10:05
+0:46
35K
21.75 mi13:59:513:13:248:548:02
10:45
+0:40
23M
23.00 mi14:12:193:25:528:5812:28
9:58
-0:47
24M
24.00 mi14:22:003:35:338:599:41
9:41
-0:17
40K
24.85 mi14:30:363:44:099:028:36
10:04
+0:23
25.2M
25.20 mi14:34:113:47:449:033:35
10:24
+0:20
FINISH
26.22 mi14:44:183:57:519:0510:07
9:56
-0:28

Checkpoint Splits Visualizations

Explore your race data through different visual perspectives. Scroll to discover each visualization.

📈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

8:05 /mi

Average Pace

9:05 /mi

Slowest Pace

10:45 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Bar length shows time spent in each segment. Colors mark your faster to slower segments, relative to your own pace.

Time at Faster Pace

1:48:56

46% of race

Time at Steady Pace

1:57:18

49% of race

Time at Slower Pace

11:37

5% of race

Average Pace: 9:04 /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

Enhanced split table showing pace trends through mini sparkline visualizations.

Overall Pace Trend

CheckpointDistanceTime of DayTimeAvg PaceSegmentPaceTrendRank
5K
3.11 mi11:11:3325:068:0525:06
8:05
#17473
10K
6.21 mi11:37:0250:358:0925:29
8:13
#18021
15K
9.32 mi12:02:371:16:108:1125:35
8:15
#18217
20K
12.43 mi12:29:201:42:538:1726:43
8:36
#18620
HALF
13.11 mi12:35:231:48:568:196:03
8:53
#18834
25K
15.53 mi12:58:462:12:198:3223:23
9:39
#19827
30K
18.64 mi13:29:052:42:388:4430:19
9:46
#20460
20M
20.00 mi13:41:442:55:178:4612:39
9:19
#20444
21M
21.00 mi13:51:493:05:228:5010:05
10:05
#20464
35K
21.75 mi13:59:513:13:248:548:02
10:45
#20715
23M
23.00 mi14:12:193:25:528:5812:28
9:58
#20848
24M
24.00 mi14:22:003:35:338:599:41
9:41
#20929
40K
24.85 mi14:30:363:44:099:028:36
10:04
#21014
25.2M
25.20 mi14:34:113:47:449:033:35
10:24
#21013
FINISH
26.22 mi14:44:183:57:519:0510:07
9:56
#21160
Faster pace
Steady pace
Slower pace

Rankings

Your position at each checkpoint and how you ranked in each segment

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM60-64Seg. OverallSeg. MalesSeg. M60-64
5K3.11 mi3.11 mi17473112111121118568(Top 64%)11692(Top 72%)11692(Top 772%)
10K6.21 mi3.10 mi18021-54811437-22611437-22618587(Top 64%)11718(Top 72%)11718(Top 774%)
15K9.32 mi3.11 mi18217-19611534-9711534-9718568(Top 64%)11692(Top 72%)11692(Top 772%)
20K12.43 mi3.11 mi18620-40311702-16811702-16819871(Top 68%)12237(Top 75%)12237(Top 808%)
HALF13.11 mi0.68 mi18834-21411788-8611788-8622133(Top 76%)13328(Top 82%)13328(Top 880%)
25K15.53 mi2.42 mi19827-99312205-41712205-41723400(Top 81%)13888(Top 85%)13888(Top 917%)
30K18.64 mi3.11 mi20460-63312470-26512470-26522435(Top 77%)13349(Top 82%)13349(Top 882%)
20M20.00 mi1.36 mi20444+1612463+712463+720322(Top 70%)12262(Top 75%)12262(Top 810%)
21M21.00 mi1.00 mi20464-2012458+512458+520696(Top 71%)12411(Top 76%)12411(Top 820%)
35K21.75 mi0.75 mi20715-25112568-11012568-11024737(Top 85%)14256(Top 87%)14256(Top 942%)
23M23.00 mi1.25 mi20848-13312627-5912627-5922010(Top 76%)12928(Top 79%)12928(Top 854%)
24M24.00 mi1.00 mi20929-8112658-3112658-3121928(Top 76%)12846(Top 79%)12846(Top 848%)
40K24.85 mi0.85 mi21014-8512679-2112679-2122082(Top 76%)12859(Top 79%)12859(Top 849%)
25.2M25.20 mi0.35 mi21013+112676+312676+320711(Top 71%)12214(Top 75%)12214(Top 807%)
FINISH26.22 mi1.02 mi21160-14712741-6512741-6523620(Top 81%)13606(Top 83%)13606(Top 899%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 64%
×21
+97ft-345ft

Overall

18568

Males

11692

M60-64

11692

5K→10K

3.1 - 6.2 mi

Top 64%
×5
+79ft-138ft

Overall

18587

Males

11718

M60-64

11718

10K→15K

6.2 - 9.3 mi

Top 64%
×3
+67ft-78ft

Overall

18568

Males

11692

M60-64

11692

15K→20K

9.3 - 12.4 mi

Top 68%
×5
+106ft-86ft

Overall

19871

Males

12237

M60-64

12237

20K→HALF

12.4 - 13.1 mi

Top 76%
×2
+19ft-37ft

Overall

22133

Males

13328

M60-64

13328

HALF→25K

13.1 - 15.5 mi

Top 81%
×4
+66ft-88ft

Overall

23400

Males

13888

M60-64

13888

25K→30K

15.5 - 18.6 mi

Top 77%
×9
+181ft-148ft

Overall

22435

Males

13349

M60-64

13349

30K→20M

18.6 - 20.0 mi

Top 70%
×5
+64ft-50ft

Overall

20322

Males

12262

M60-64

12262

20M→21M

20.0 - 21.0 mi

Top 71%
×8
+106ft-24ft

Overall

20696

Males

12411

M60-64

12411

21M→35K

21.0 - 21.8 mi

Top 85%
×7
+17ft-86ft

Overall

24737

Males

14256

M60-64

14256

35K→23M

21.8 - 23.0 mi

Top 76%
×5
+23ft-63ft

Overall

22010

Males

12928

M60-64

12928

23M→24M

23.0 - 24.0 mi

Top 76%
×6
+12ft-82ft

Overall

21928

Males

12846

M60-64

12846

24M→40K

24.0 - 24.9 mi

Top 76%
×1
+6ft-20ft

Overall

22082

Males

12859

M60-64

12859

40K→25.2M

24.9 - 25.2 mi

Top 71%
×1
+13ft-16ft

Overall

20711

Males

12214

M60-64

12214

25.2M→FINISH

25.2 - 26.2 mi

Top 81%
×2
+22ft-21ft

Overall

23620

Males

13606

M60-64

13606

Passing

Athletes you passed and who passed you throughout the race

Passing Analysis

Category:
Athletes Passed
666
Passed By
2151
Net Change
-3687
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#17473
5K → 10K91200-548#17473#18021
10K → 15K112200-196#18021#18217
15K → 20K61200-403#18217#18620
20K → HALF5200-214#18620#18834
HALF → 25K13200-993#18834#19827
25K → 30K70200-633#19827#20460
30K → 20M9276+16#20460#20444
20M → 21M7090-20#20444#20464
21M → 35K12200-251#20464#20715
35K → 23M37170-133#20715#20848
23M → 24M31112-81#20848#20929
24M → 40K33118-85#20929#21014
40K → 25.2M2726+1#21014#21013
25.2M → FINISH12159-147#21013#21160
TOTALS6662151-3687
📊

Passing Analysis Visualizations

Explore your passing analysis through 5 different visualizations. Scroll to discover each one.

Time:
Category:

📈Position Graph

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🎨Heatmap Timeline

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🔄Passing Circle

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🌊Position Flow

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🏃Race Lanes

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Qualifying & Age Grade

See how your performance stacks up against qualifying standards

OTQ

Olympic Trials Qualifying analysis available

Activity Data

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