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Public Race Data

Boston Athletic Association

Boston Athletic Association

Mika Timing

Mika Timing
BOSTON MARATHON 2026

Helena Jelsma

Bib: 23824 •F •Age: N/A

Boston Marathon logo
0:00
0:00
/ mi
Masters
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Overall
#0 / 29021
Gender (Female)
#0 / 12578
Masters (Masters Women)
#0 / 6862
Top 41%
Age Group (F50-54)
#0 / 1233
Top 37%
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
25:32
3.11 mi
Rank: #18347
Start → 5K
25:32 | 8:14/mi
10K
50:50
6.21 mi
Rank: #18296 (+51)
5K → 10K
25:18 | 8:09/mi
15K
1:15:58
9.32 mi
Rank: #18072 (+224)
10K → 15K
25:08 | 8:06/mi
20K
1:42:56
12.43 mi
Rank: #18658 (-586)
15K → 20K
26:58 | 8:41/mi
HALF
1:48:21
13.11 mi
Rank: #18563 (+95)
20K → HALF
5:25 | 7:57/mi
25K
2:08:39
15.53 mi
Rank: #18427 (+136)
HALF → 25K
20:18 | 8:23/mi
30K
2:35:12
18.64 mi
Rank: #18191 (+236)
25K → 30K
26:33 | 8:33/mi
20M
2:46:59
20.00 mi
Rank: #18089 (+102)
30K → 20M
11:47 | 8:41/mi
21M
2:56:09
21.00 mi
Rank: #18011 (+78)
20M → 21M
9:10 | 9:10/mi
35K
3:02:28
21.75 mi
Rank: #17972 (+39)
21M → 35K
6:19 | 8:27/mi
23M
3:13:21
23.00 mi
Rank: #17869 (+103)
35K → 23M
10:53 | 8:42/mi
24M
3:21:48
24.00 mi
Rank: #17825 (+44)
23M → 24M
8:27 | 8:27/mi
40K
3:29:12
24.85 mi
Rank: #17750 (+75)
24M → 40K
7:24 | 8:40/mi
25.2M
3:32:25
25.20 mi
Rank: #17720 (+30)
40K → 25.2M
3:13 | 9:20/mi
FINISH
3:41:10
26.22 mi
Rank: #17744 (-24)
25.2M → FINISH
8:45 | 8:36/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
Time1:48:21
Pace8:16 /mi
2nd Half
Distance13.11 mi
Time1:52:49
Pace8:37 /mi
📊Positive Split: 4.1% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:30:0925:328:1425:32
8:14
-
10K
6.21 mi11:55:2750:508:1125:18
8:09
-0:05
15K
9.32 mi12:20:351:15:588:1025:08
8:06
-0:03
20K
12.43 mi12:47:331:42:568:1726:58
8:41
+0:35
HALF
13.11 mi12:52:581:48:218:165:25
7:57
-0:44
25K
15.53 mi13:13:162:08:398:1720:18
8:23
+0:26
30K
18.64 mi13:39:492:35:128:2026:33
8:33
+0:10
20M
20.00 mi13:51:362:46:598:2111:47
8:41
+0:08
21M
21.00 mi14:00:462:56:098:249:10
9:10
+0:29
35K
21.75 mi14:07:053:02:288:246:19
8:27
-0:43
23M
23.00 mi14:17:583:13:218:2510:53
8:42
+0:15
24M
24.00 mi14:26:253:21:488:258:27
8:27
-0:15
40K
24.85 mi14:33:493:29:128:267:24
8:40
+0:13
25.2M
25.20 mi14:37:023:32:258:263:13
9:20
+0:40
FINISH
26.22 mi14:45:473:41:108:278:45
8:36
-0:44

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

7:57 /mi

Average Pace

8:26 /mi

Slowest Pace

9:20 /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

3:28:47

94% of race

Time at Steady Pace

12:23

6% of race

Time at Slower Pace

0:00

0% of race

Average Pace: 8:26 /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 mi11:30:0925:328:1425:32
8:14
#18347
10K
6.21 mi11:55:2750:508:1125:18
8:09
#18296
15K
9.32 mi12:20:351:15:588:1025:08
8:06
#18072
20K
12.43 mi12:47:331:42:568:1726:58
8:41
#18658
HALF
13.11 mi12:52:581:48:218:165:25
7:57
#18563
25K
15.53 mi13:13:162:08:398:1720:18
8:23
#18427
30K
18.64 mi13:39:492:35:128:2026:33
8:33
#18191
20M
20.00 mi13:51:362:46:598:2111:47
8:41
#18089
21M
21.00 mi14:00:462:56:098:249:10
9:10
#18011
35K
21.75 mi14:07:053:02:288:246:19
8:27
#17972
23M
23.00 mi14:17:583:13:218:2510:53
8:42
#17869
24M
24.00 mi14:26:253:21:488:258:27
8:27
#17825
40K
24.85 mi14:33:493:29:128:267:24
8:40
#17750
25.2M
25.20 mi14:37:023:32:258:263:13
9:20
#17720
FINISH
26.22 mi14:45:473:41:108:278:45
8:36
#17744
Faster pace
Steady pace
Slower pace

Rankings

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

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF50-54Seg. OverallSeg. FemalesSeg. F50-54
5K3.11 mi3.11 mi183476707670717643(Top 61%)6277(Top 50%)6277(Top 509%)
10K6.21 mi3.10 mi18296+516664+436664+4318243(Top 63%)6605(Top 53%)6605(Top 536%)
15K9.32 mi3.11 mi18072+2246531+1336531+13317643(Top 61%)6277(Top 50%)6277(Top 509%)
20K12.43 mi3.11 mi18658-5866863-3326863-33220333(Top 70%)7802(Top 62%)7802(Top 633%)
HALF13.11 mi0.68 mi18563+956808+556808+5516814(Top 58%)5821(Top 46%)5821(Top 472%)
25K15.53 mi2.42 mi18427+1366743+656743+6517821(Top 61%)6460(Top 51%)6460(Top 524%)
30K18.64 mi3.11 mi18191+2366648+956648+9517186(Top 59%)6207(Top 49%)6207(Top 503%)
20M20.00 mi1.36 mi18089+1026617+316617+3117282(Top 60%)6349(Top 50%)6349(Top 515%)
21M21.00 mi1.00 mi18011+786586+316586+3117028(Top 59%)6274(Top 50%)6274(Top 509%)
35K21.75 mi0.75 mi17972+396577+96577+917311(Top 60%)6519(Top 52%)6519(Top 529%)
23M23.00 mi1.25 mi17869+1036548+296548+2916901(Top 58%)6377(Top 51%)6377(Top 517%)
24M24.00 mi1.00 mi17825+446537+116537+1116625(Top 57%)6252(Top 50%)6252(Top 507%)
40K24.85 mi0.85 mi17750+756508+296508+2916638(Top 57%)6327(Top 50%)6327(Top 513%)
25.2M25.20 mi0.35 mi17720+306499+96499+916552(Top 57%)6270(Top 50%)6270(Top 509%)
FINISH26.22 mi1.02 mi17744-246541-426541-4218615(Top 64%)7356(Top 58%)7356(Top 597%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 61%
×21
+97ft-345ft

Overall

17643

Females

6277

F50-54

6277

5K→10K

3.1 - 6.2 mi

Top 63%
×5
+79ft-138ft

Overall

18243

Females

6605

F50-54

6605

10K→15K

6.2 - 9.3 mi

Top 61%
×3
+67ft-78ft

Overall

17643

Females

6277

F50-54

6277

15K→20K

9.3 - 12.4 mi

Top 70%
×5
+106ft-86ft

Overall

20333

Females

7802

F50-54

7802

20K→HALF

12.4 - 13.1 mi

Top 58%
×2
+19ft-37ft

Overall

16814

Females

5821

F50-54

5821

HALF→25K

13.1 - 15.5 mi

Top 61%
×4
+66ft-88ft

Overall

17821

Females

6460

F50-54

6460

25K→30K

15.5 - 18.6 mi

Top 59%
×9
+181ft-148ft

Overall

17186

Females

6207

F50-54

6207

30K→20M

18.6 - 20.0 mi

Top 60%
×5
+64ft-50ft

Overall

17282

Females

6349

F50-54

6349

20M→21M

20.0 - 21.0 mi

Top 59%
×8
+106ft-24ft

Overall

17028

Females

6274

F50-54

6274

21M→35K

21.0 - 21.8 mi

Top 60%
×7
+17ft-86ft

Overall

17311

Females

6519

F50-54

6519

35K→23M

21.8 - 23.0 mi

Top 58%
×5
+23ft-63ft

Overall

16901

Females

6377

F50-54

6377

23M→24M

23.0 - 24.0 mi

Top 57%
×6
+12ft-82ft

Overall

16625

Females

6252

F50-54

6252

24M→40K

24.0 - 24.9 mi

Top 57%
×1
+6ft-20ft

Overall

16638

Females

6327

F50-54

6327

40K→25.2M

24.9 - 25.2 mi

Top 57%
×1
+13ft-16ft

Overall

16552

Females

6270

F50-54

6270

25.2M→FINISH

25.2 - 26.2 mi

Top 64%
×2
+22ft-21ft

Overall

18615

Females

7356

F50-54

7356

Passing

Athletes you passed and who passed you throughout the race

Passing Analysis

Category:
Athletes Passed
1989*
Passed By
957
Net Change
+603
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#18347
5K → 10K251*200+51#18347#18296
10K → 15K314*90+224#18296#18072
15K → 20K43200-586#18072#18658
20K → HALF994+95#18658#18563
HALF → 25K19862+136#18563#18427
25K → 30K300*64+236#18427#18191
30K → 20M15553+102#18191#18089
20M → 21M11436+78#18089#18011
21M → 35K6627+39#18011#17972
35K → 23M15047+103#17972#17869
23M → 24M9046+44#17869#17825
24M → 40K10429+75#17825#17750
40K → 25.2M4919+30#17750#17720
25.2M → FINISH5680-24#17720#17744
TOTALS1989*957+603

* 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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