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BOSTON MARATHON 2026

Graeme Klerck

Bib: 10831•M

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0:00
0:00
/ mi
Masters
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Overall
#0 / 29021
Top 24%
Gender (Male)
#0 / 16340
Top 36%
Masters (Masters Men)
#0 / 10617
Top 22%
Age Group (M50-54)
#0 / 1868
Top 17%
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
20:32
3.11 mi
Rank: #5080
Start → 5K
20:32 | 6:37/mi
10K
41:20
6.21 mi
Rank: #5439 (-359)
5K → 10K
20:48 | 6:42/mi
15K
1:02:31
9.32 mi
Rank: #5896 (-457)
10K → 15K
21:11 | 6:50/mi
20K
1:24:03
12.43 mi
Rank: #6268 (-372)
15K → 20K
21:32 | 6:56/mi
HALF
1:28:52
13.11 mi
Rank: #6448 (-180)
20K → HALF
4:49 | 7:04/mi
25K
1:46:01
15.53 mi
Rank: #6732 (-284)
HALF → 25K
17:09 | 7:05/mi
30K
2:08:18
18.64 mi
Rank: #6804 (-72)
25K → 30K
22:17 | 7:11/mi
20M
2:18:10
20.00 mi
Rank: #6824 (-20)
30K → 20M
9:52 | 7:16/mi
21M
2:25:40
21.00 mi
Rank: #6772 (+52)
20M → 21M
7:30 | 7:30/mi
35K
2:30:59
21.75 mi
Rank: #6787 (-15)
21M → 35K
5:19 | 7:07/mi
23M
2:40:07
23.00 mi
Rank: #6759 (+28)
35K → 23M
9:08 | 7:18/mi
24M
2:47:27
24.00 mi
Rank: #6789 (-30)
23M → 24M
7:20 | 7:20/mi
40K
2:53:56
24.85 mi
Rank: #6831 (-42)
24M → 40K
6:29 | 7:35/mi
25.2M
2:56:43
25.20 mi
Rank: #6836 (-5)
40K → 25.2M
2:47 | 8:05/mi
FINISH
3:03:55
26.22 mi
Rank: #6839 (-3)
25.2M → FINISH
7:12 | 7:04/mi

Splits & Pacing

Detailed breakdown of your race performance at each timing point

Half Splits

1st HalfFaster
via HALF
Distance13.11 mi
Time1:28:52
Pace6:47 /mi
2nd Half
Distance13.11 mi
Time1:35:03
Pace7:16 /mi
📊Positive Split: 7.0% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:37:2720:326:3720:32
6:37
-
10K
6.21 mi10:58:1541:206:4020:48
6:42
+0:05
15K
9.32 mi11:19:261:02:316:4321:11
6:50
+0:08
20K
12.43 mi11:40:581:24:036:4621:32
6:56
+0:06
HALF
13.11 mi11:45:471:28:526:474:49
7:04
+0:08
25K
15.53 mi12:02:561:46:016:5017:09
7:05
+0:01
30K
18.64 mi12:25:132:08:186:5322:17
7:11
+0:06
20M
20.00 mi12:35:052:18:106:559:52
7:16
+0:05
21M
21.00 mi12:42:352:25:406:577:30
7:30
+0:14
35K
21.75 mi12:47:542:30:596:575:19
7:07
-0:23
23M
23.00 mi12:57:022:40:076:589:08
7:18
+0:11
24M
24.00 mi13:04:222:47:276:597:20
7:20
+0:02
40K
24.85 mi13:10:512:53:567:006:29
7:35
+0:15
25.2M
25.20 mi13:13:382:56:437:012:47
8:05
+0:30
FINISH
26.22 mi13:20:503:03:557:027:12
7:04
-1:01

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

6:37 /mi

Average Pace

7:01 /mi

Slowest Pace

8:05 /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

1:24:03

46% of race

Time at Steady Pace

1:06:38

36% of race

Time at Slower Pace

33:14

18% of race

Average Pace: 7:01 /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 mi10:37:2720:326:3720:32
6:37
#5080
10K
6.21 mi10:58:1541:206:4020:48
6:42
#5439
15K
9.32 mi11:19:261:02:316:4321:11
6:50
#5896
20K
12.43 mi11:40:581:24:036:4621:32
6:56
#6268
HALF
13.11 mi11:45:471:28:526:474:49
7:04
#6448
25K
15.53 mi12:02:561:46:016:5017:09
7:05
#6732
30K
18.64 mi12:25:132:08:186:5322:17
7:11
#6804
20M
20.00 mi12:35:052:18:106:559:52
7:16
#6824
21M
21.00 mi12:42:352:25:406:577:30
7:30
#6772
35K
21.75 mi12:47:542:30:596:575:19
7:07
#6787
23M
23.00 mi12:57:022:40:076:589:08
7:18
#6759
24M
24.00 mi13:04:222:47:276:597:20
7:20
#6789
40K
24.85 mi13:10:512:53:567:006:29
7:35
#6831
25.2M
25.20 mi13:13:382:56:437:012:47
8:05
#6836
FINISH
26.22 mi13:20:503:03:557:027:12
7:04
#6839
Faster pace
Steady pace
Slower pace

Rankings

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

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM50-54Seg. OverallSeg. MalesSeg. M50-54
5K3.11 mi3.11 mi5080473847387012(Top 24%)6180(Top 38%)6180(Top 331%)
10K6.21 mi3.10 mi5439-3595041-3035041-3035903(Top 20%)5382(Top 33%)5382(Top 288%)
15K9.32 mi3.11 mi5896-4575400-3595400-3597012(Top 24%)6180(Top 38%)6180(Top 331%)
20K12.43 mi3.11 mi6268-3725665-2655665-2657350(Top 25%)6402(Top 39%)6402(Top 343%)
HALF13.11 mi0.68 mi6448-1805802-1375802-1379088(Top 31%)7494(Top 46%)7494(Top 401%)
25K15.53 mi2.42 mi6732-2845991-1895991-1897906(Top 27%)6694(Top 41%)6694(Top 358%)
30K18.64 mi3.11 mi6804-726026-356026-357195(Top 25%)6119(Top 37%)6119(Top 328%)
20M20.00 mi1.36 mi6824-206013+136013+137371(Top 25%)6124(Top 37%)6124(Top 328%)
21M21.00 mi1.00 mi6772+525965+485965+486475(Top 22%)5440(Top 33%)5440(Top 291%)
35K21.75 mi0.75 mi6787-155969-45969-47833(Top 27%)6323(Top 39%)6323(Top 338%)
23M23.00 mi1.25 mi6759+285934+355934+357426(Top 26%)6010(Top 37%)6010(Top 322%)
24M24.00 mi1.00 mi6789-305943-95943-98808(Top 30%)6684(Top 41%)6684(Top 358%)
40K24.85 mi0.85 mi6831-425955-125955-129397(Top 32%)6888(Top 42%)6888(Top 369%)
25.2M25.20 mi0.35 mi6836-55948+75948+78706(Top 30%)6442(Top 39%)6442(Top 345%)
FINISH26.22 mi1.02 mi6839-35932+165932+168057(Top 28%)6066(Top 37%)6066(Top 325%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 24%
×21
+97ft-345ft

Overall

7012

Males

6180

M50-54

6180

5K→10K

3.1 - 6.2 mi

Top 20%
×5
+79ft-138ft

Overall

5903

Males

5382

M50-54

5382

10K→15K

6.2 - 9.3 mi

Top 24%
×3
+67ft-78ft

Overall

7012

Males

6180

M50-54

6180

15K→20K

9.3 - 12.4 mi

Top 25%
×5
+106ft-86ft

Overall

7350

Males

6402

M50-54

6402

20K→HALF

12.4 - 13.1 mi

Top 31%
×2
+19ft-37ft

Overall

9088

Males

7494

M50-54

7494

HALF→25K

13.1 - 15.5 mi

Top 27%
×4
+66ft-88ft

Overall

7906

Males

6694

M50-54

6694

25K→30K

15.5 - 18.6 mi

Top 25%
×9
+181ft-148ft

Overall

7195

Males

6119

M50-54

6119

30K→20M

18.6 - 20.0 mi

Top 25%
×5
+64ft-50ft

Overall

7371

Males

6124

M50-54

6124

20M→21M

20.0 - 21.0 mi

Top 22%
×8
+106ft-24ft

Overall

6475

Males

5440

M50-54

5440

21M→35K

21.0 - 21.8 mi

Top 27%
×7
+17ft-86ft

Overall

7833

Males

6323

M50-54

6323

35K→23M

21.8 - 23.0 mi

Top 26%
×5
+23ft-63ft

Overall

7426

Males

6010

M50-54

6010

23M→24M

23.0 - 24.0 mi

Top 30%
×6
+12ft-82ft

Overall

8808

Males

6684

M50-54

6684

24M→40K

24.0 - 24.9 mi

Top 32%
×1
+6ft-20ft

Overall

9397

Males

6888

M50-54

6888

40K→25.2M

24.9 - 25.2 mi

Top 30%
×1
+13ft-16ft

Overall

8706

Males

6442

M50-54

6442

25.2M→FINISH

25.2 - 26.2 mi

Top 28%
×2
+22ft-21ft

Overall

8057

Males

6066

M50-54

6066

Passing

Athletes you passed and who passed you throughout the race

Passing Analysis

Category:
Athletes Passed
802
Passed By
1673
Net Change
-1759
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#5080
5K → 10K69200-359#5080#5439
10K → 15K33200-457#5439#5896
15K → 20K63200-372#5896#6268
20K → HALF2182-180#6268#6448
HALF → 25K51200-284#6448#6732
25K → 30K115187-72#6732#6804
30K → 20M7999-20#6804#6824
20M → 21M8735+52#6824#6772
21M → 35K3651-15#6772#6787
35K → 23M9971+28#6787#6759
23M → 24M4070-30#6759#6789
24M → 40K4385-42#6789#6831
40K → 25.2M2631-5#6831#6836
25.2M → FINISH5962-3#6836#6839
TOTALS8021673-1759
📊

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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Activity Data

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Public Race Data

Boston Athletic Association

Boston Athletic Association

Mika Timing

Mika Timing