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BOSTON MARATHON 2026

Folkert Hiemstra

Bib: 31659•M

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Overall
#0 / 29021
Gender (Male)
#0 / 16340
Age Group (M18-39)
#0 / 5723
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
26:25
3.11 mi
Rank: #20091
Start → 5K
26:25 | 8:31/mi
10K
52:15
6.21 mi
Rank: #19670 (+421)
5K → 10K
25:50 | 8:19/mi
15K
1:18:44
9.32 mi
Rank: #19835 (-165)
10K → 15K
26:29 | 8:32/mi
20K
1:45:26
12.43 mi
Rank: #19826 (+9)
15K → 20K
26:42 | 8:36/mi
HALF
1:51:22
13.11 mi
Rank: #19909 (-83)
20K → HALF
5:56 | 8:43/mi
25K
2:14:26
15.53 mi
Rank: #20588 (-679)
HALF → 25K
23:04 | 9:31/mi
30K
2:46:10
18.64 mi
Rank: #21369 (-781)
25K → 30K
31:44 | 10:13/mi
20M
3:01:19
20.00 mi
Rank: #21836 (-467)
30K → 20M
15:09 | 11:10/mi
21M
3:17:26
21.00 mi
Rank: #22844 (-1008)
20M → 21M
16:07 | 16:07/mi
35K
3:28:09
21.75 mi
Rank: #23318 (-474)
21M → 35K
10:43 | 14:20/mi
23M
3:42:43
23.00 mi
Rank: #23524 (-206)
35K → 23M
14:34 | 11:39/mi
24M
3:52:57
24.00 mi
Rank: #23493 (+31)
23M → 24M
10:14 | 10:14/mi
40K
4:02:01
24.85 mi
Rank: #23475 (+18)
24M → 40K
9:04 | 10:37/mi
25.2M
4:06:19
25.20 mi
Rank: #23506 (-31)
40K → 25.2M
4:18 | 12:29/mi
FINISH
4:17:41
26.22 mi
Rank: #23656 (-150)
25.2M → FINISH
11:22 | 11:10/mi

Splits & Pacing

Detailed breakdown of your race performance at each timing point

Half Splits

1st HalfFaster
via HALF
Distance13.11 mi
Time1:51:22
Pace8:30 /mi
2nd Half
Distance13.11 mi
Time2:26:19
Pace11:10 /mi
📊Positive Split: 31.4% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:55:4326:258:3126:25
8:31
-
10K
6.21 mi12:21:3352:158:2525:50
8:19
-0:12
15K
9.32 mi12:48:021:18:448:2726:29
8:32
+0:13
20K
12.43 mi13:14:441:45:268:3026:42
8:36
+0:04
HALF
13.11 mi13:20:401:51:228:305:56
8:43
+0:07
25K
15.53 mi13:43:442:14:268:4023:04
9:31
+0:48
30K
18.64 mi14:15:282:46:108:5531:44
10:13
+0:42
20M
20.00 mi14:30:373:01:199:0415:09
11:10
+0:57
21M
21.00 mi14:46:443:17:269:2516:07
16:07
+4:57
35K
21.75 mi14:57:273:28:099:3510:43
14:20
-1:47
23M
23.00 mi15:12:013:42:439:4214:34
11:39
-2:41
24M
24.00 mi15:22:153:52:579:4310:14
10:14
-1:25
40K
24.85 mi15:31:194:02:019:459:04
10:37
+0:23
25.2M
25.20 mi15:35:374:06:199:474:18
12:29
+1:52
FINISH
26.22 mi15:46:594:17:419:5111:22
11:10
-1:19

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

8:19 /mi

Average Pace

9:50 /mi

Slowest Pace

16:07 /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

1:51:22

43% of race

Time at Steady Pace

1:40:37

39% of race

Time at Slower Pace

45:42

18% of race

Average Pace: 9:50 /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 mi11:55:4326:258:3126:25
8:31
#20091
10K
6.21 mi12:21:3352:158:2525:50
8:19
#19670
15K
9.32 mi12:48:021:18:448:2726:29
8:32
#19835
20K
12.43 mi13:14:441:45:268:3026:42
8:36
#19826
HALF
13.11 mi13:20:401:51:228:305:56
8:43
#19909
25K
15.53 mi13:43:442:14:268:4023:04
9:31
#20588
30K
18.64 mi14:15:282:46:108:5531:44
10:13
#21369
20M
20.00 mi14:30:373:01:199:0415:09
11:10
#21836
21M
21.00 mi14:46:443:17:269:2516:07
16:07
#22844
35K
21.75 mi14:57:273:28:099:3510:43
14:20
#23318
23M
23.00 mi15:12:013:42:439:4214:34
11:39
#23524
24M
24.00 mi15:22:153:52:579:4310:14
10:14
#23493
40K
24.85 mi15:31:194:02:019:459:04
10:37
#23475
25.2M
25.20 mi15:35:374:06:199:474:18
12:29
#23506
FINISH
26.22 mi15:46:594:17:419:5111:22
11:10
#23656
Faster pace
Steady pace
Slower pace

Rankings

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

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM18-39Seg. OverallSeg. MalesSeg. M18-39
5K3.11 mi3.11 mi20091123231232320298(Top 70%)12466(Top 76%)12466(Top 218%)
10K6.21 mi3.10 mi19670+42112145+17812145+17819269(Top 66%)12018(Top 74%)12018(Top 210%)
15K9.32 mi3.11 mi19835-16512231-8612231-8620298(Top 70%)12466(Top 76%)12466(Top 218%)
20K12.43 mi3.11 mi19826+912208+2312208+2319835(Top 68%)12219(Top 75%)12219(Top 214%)
HALF13.11 mi0.68 mi19909-8312247-3912247-3921345(Top 74%)12978(Top 79%)12978(Top 227%)
25K15.53 mi2.42 mi20588-67912554-30712554-30723050(Top 79%)13735(Top 84%)13735(Top 240%)
30K18.64 mi3.11 mi21369-78112921-36712921-36723655(Top 82%)13915(Top 85%)13915(Top 243%)
20M20.00 mi1.36 mi21836-46713128-20713128-20725179(Top 87%)14544(Top 89%)14544(Top 254%)
21M21.00 mi1.00 mi22844-100813596-46813596-46828632(Top 99%)16127(Top 99%)16127(Top 282%)
35K21.75 mi0.75 mi23318-47413817-22113817-22128486(Top 98%)16042(Top 98%)16042(Top 280%)
23M23.00 mi1.25 mi23524-20613912-9513912-9525627(Top 88%)14654(Top 90%)14654(Top 256%)
24M24.00 mi1.00 mi23493+3113887+2513887+2523434(Top 81%)13580(Top 83%)13580(Top 237%)
40K24.85 mi0.85 mi23475+1813872+1513872+1523461(Top 81%)13524(Top 83%)13524(Top 236%)
25.2M25.20 mi0.35 mi23506-3113882-1013882-1025262(Top 87%)14416(Top 88%)14416(Top 252%)
FINISH26.22 mi1.02 mi23656-15013935-5313935-5326353(Top 91%)14933(Top 91%)14933(Top 261%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 70%
×21
+97ft-345ft

Overall

20298

Males

12466

M18-39

12466

5K→10K

3.1 - 6.2 mi

Top 66%
×5
+79ft-138ft

Overall

19269

Males

12018

M18-39

12018

10K→15K

6.2 - 9.3 mi

Top 70%
×3
+67ft-78ft

Overall

20298

Males

12466

M18-39

12466

15K→20K

9.3 - 12.4 mi

Top 68%
×5
+106ft-86ft

Overall

19835

Males

12219

M18-39

12219

20K→HALF

12.4 - 13.1 mi

Top 74%
×2
+19ft-37ft

Overall

21345

Males

12978

M18-39

12978

HALF→25K

13.1 - 15.5 mi

Top 79%
×4
+66ft-88ft

Overall

23050

Males

13735

M18-39

13735

25K→30K

15.5 - 18.6 mi

Top 82%
×9
+181ft-148ft

Overall

23655

Males

13915

M18-39

13915

30K→20M

18.6 - 20.0 mi

Top 87%
×5
+64ft-50ft

Overall

25179

Males

14544

M18-39

14544

20M→21M

20.0 - 21.0 mi

Top 99%
×8
+106ft-24ft

Overall

28632

Males

16127

M18-39

16127

21M→35K

21.0 - 21.8 mi

Top 98%
×7
+17ft-86ft

Overall

28486

Males

16042

M18-39

16042

35K→23M

21.8 - 23.0 mi

Top 88%
×5
+23ft-63ft

Overall

25627

Males

14654

M18-39

14654

23M→24M

23.0 - 24.0 mi

Top 81%
×6
+12ft-82ft

Overall

23434

Males

13580

M18-39

13580

24M→40K

24.0 - 24.9 mi

Top 81%
×1
+6ft-20ft

Overall

23461

Males

13524

M18-39

13524

40K→25.2M

24.9 - 25.2 mi

Top 87%
×1
+13ft-16ft

Overall

25262

Males

14416

M18-39

14416

25.2M→FINISH

25.2 - 26.2 mi

Top 91%
×2
+22ft-21ft

Overall

26353

Males

14933

M18-39

14933

Passing

Athletes you passed and who passed you throughout the race

Passing Analysis

Category:
Athletes Passed
1062*
Passed By
2037
Net Change
-3565
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#20091
5K → 10K541*120+421#20091#19670
10K → 15K105200-165#19670#19835
15K → 20K154145+9#19835#19826
20K → HALF1396-83#19826#19909
HALF → 25K30200-679#19909#20588
25K → 30K30200-781#20588#21369
30K → 20M25200-467#21369#21836
20M → 21M3200-1008#21836#22844
21M → 35K3200-474#22844#23318
35K → 23M14200-206#23318#23524
23M → 24M6130+31#23524#23493
24M → 40K5941+18#23493#23475
40K → 25.2M637-31#23475#23506
25.2M → FINISH18168-150#23506#23656
TOTALS1062*2037-3565

* Includes athletes who did not complete a segment (DNF/DNQ).

📊

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