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Public Race Data

Boston Athletic Association

Boston Athletic Association

Mika Timing

Mika Timing
BOSTON MARATHON 2026

Arissa Opalacz

Bib: 12110 •F •Age: N/A

MA

Boston Marathon logo
0:00
0:00
/ mi
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Overall
#0 / 29021
Top 25%
Gender (Female)
#0 / 12578
Top 8%
Age Group (F18-39)
#0 / 5716
Top 16%
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
21:32
3.11 mi
Rank: #8009
Start → 5K
21:32 | 6:56/mi
10K
43:08
6.21 mi
Rank: #8154 (-145)
5K → 10K
21:36 | 6:58/mi
15K
1:04:50
9.32 mi
Rank: #8257 (-103)
10K → 15K
21:42 | 7:00/mi
20K
1:26:52
12.43 mi
Rank: #8299 (-42)
15K → 20K
22:02 | 7:06/mi
HALF
1:31:30
13.11 mi
Rank: #8231 (+68)
20K → HALF
4:38 | 6:48/mi
25K
1:48:42
15.53 mi
Rank: #8149 (+82)
HALF → 25K
17:12 | 7:06/mi
30K
2:11:10
18.64 mi
Rank: #7980 (+169)
25K → 30K
22:28 | 7:14/mi
20M
2:21:02
20.00 mi
Rank: #7891 (+89)
30K → 20M
9:52 | 7:16/mi
21M
2:28:42
21.00 mi
Rank: #7815 (+76)
20M → 21M
7:40 | 7:40/mi
35K
2:34:03
21.75 mi
Rank: #7801 (+14)
21M → 35K
5:21 | 7:10/mi
23M
2:42:59
23.00 mi
Rank: #7643 (+158)
35K → 23M
8:56 | 7:09/mi
24M
2:49:56
24.00 mi
Rank: #7528 (+115)
23M → 24M
6:57 | 6:57/mi
40K
2:56:04
24.85 mi
Rank: #7442 (+86)
24M → 40K
6:08 | 7:11/mi
25.2M
2:58:46
25.20 mi
Rank: #7422 (+20)
40K → 25.2M
2:42 | 7:50/mi
FINISH
3:05:41
26.22 mi
Rank: #7306 (+116)
25.2M → FINISH
6:55 | 6:48/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
Time1:31:30
Pace6:59 /mi
2nd Half
Distance13.11 mi
Time1:34:11
Pace7:12 /mi
📊Positive Split: 2.9% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:49:4421:326:5621:32
6:56
-
10K
6.21 mi11:11:2043:086:5721:36
6:58
+0:02
15K
9.32 mi11:33:021:04:506:5821:42
7:00
+0:02
20K
12.43 mi11:55:041:26:527:0022:02
7:06
+0:06
HALF
13.11 mi11:59:421:31:306:594:38
6:48
-0:18
25K
15.53 mi12:16:541:48:427:0017:12
7:06
+0:18
30K
18.64 mi12:39:222:11:107:0322:28
7:14
+0:08
20M
20.00 mi12:49:142:21:027:049:52
7:16
+0:02
21M
21.00 mi12:56:542:28:427:057:40
7:40
+0:24
35K
21.75 mi13:02:152:34:037:065:21
7:10
-0:30
23M
23.00 mi13:11:112:42:597:068:56
7:09
-0:01
24M
24.00 mi13:18:082:49:567:056:57
6:57
-0:12
40K
24.85 mi13:24:162:56:047:066:08
7:11
+0:14
25.2M
25.20 mi13:26:582:58:467:062:42
7:50
+0:39
FINISH
26.22 mi13:33:533:05:417:066:55
6:48
-1:02

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

6:48 /mi

Average Pace

7:05 /mi

Slowest Pace

7:50 /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

2:55:19

94% of race

Time at Steady Pace

10:22

6% of race

Time at Slower Pace

0:00

0% of race

Average Pace: 7:05 /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 mi10:49:4421:326:5621:32
6:56
#8009
10K
6.21 mi11:11:2043:086:5721:36
6:58
#8154
15K
9.32 mi11:33:021:04:506:5821:42
7:00
#8257
20K
12.43 mi11:55:041:26:527:0022:02
7:06
#8299
HALF
13.11 mi11:59:421:31:306:594:38
6:48
#8231
25K
15.53 mi12:16:541:48:427:0017:12
7:06
#8149
30K
18.64 mi12:39:222:11:107:0322:28
7:14
#7980
20M
20.00 mi12:49:142:21:027:049:52
7:16
#7891
21M
21.00 mi12:56:542:28:427:057:40
7:40
#7815
35K
21.75 mi13:02:152:34:037:065:21
7:10
#7801
23M
23.00 mi13:11:112:42:597:068:56
7:09
#7643
24M
24.00 mi13:18:082:49:567:056:57
6:57
#7528
40K
24.85 mi13:24:162:56:047:066:08
7:11
#7442
25.2M
25.20 mi13:26:582:58:467:062:42
7:50
#7422
FINISH
26.22 mi13:33:533:05:417:066:55
6:48
#7306
Faster pace
Steady pace
Slower pace

Rankings

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

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF18-39Seg. OverallSeg. FemalesSeg. F18-39
5K3.11 mi3.11 mi8009108910898486(Top 29%)1294(Top 10%)1294(Top 23%)
10K6.21 mi3.10 mi8154-1451135-461135-468348(Top 29%)1215(Top 10%)1215(Top 21%)
15K9.32 mi3.11 mi8257-1031195-601195-608486(Top 29%)1294(Top 10%)1294(Top 23%)
20K12.43 mi3.11 mi8299-421217-221217-228543(Top 29%)1359(Top 11%)1359(Top 24%)
HALF13.11 mi0.68 mi8231+681192+251192+257192(Top 25%)881(Top 7%)881(Top 15%)
25K15.53 mi2.42 mi8149+821167+251167+258088(Top 28%)1259(Top 10%)1259(Top 22%)
30K18.64 mi3.11 mi7980+1691146+211146+217618(Top 26%)1214(Top 10%)1214(Top 21%)
20M20.00 mi1.36 mi7891+891134+121134+127414(Top 26%)1230(Top 10%)1230(Top 22%)
21M21.00 mi1.00 mi7815+761127+71127+77638(Top 26%)1461(Top 12%)1461(Top 26%)
35K21.75 mi0.75 mi7801+141134-71134-78211(Top 28%)1637(Top 13%)1637(Top 29%)
23M23.00 mi1.25 mi7643+1581103+311103+316402(Top 22%)1018(Top 8%)1018(Top 18%)
24M24.00 mi1.00 mi7528+1151082+211082+216166(Top 21%)1011(Top 8%)1011(Top 18%)
40K24.85 mi0.85 mi7442+861074+81074+86605(Top 23%)1203(Top 10%)1203(Top 21%)
25.2M25.20 mi0.35 mi7422+201078-41078-47303(Top 25%)1541(Top 12%)1541(Top 27%)
FINISH26.22 mi1.02 mi7306+1161060+181060+186055(Top 21%)1132(Top 9%)1132(Top 20%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 29%
×21
+97ft-345ft

Overall

8486

Females

1294

F18-39

1294

5K→10K

3.1 - 6.2 mi

Top 29%
×5
+79ft-138ft

Overall

8348

Females

1215

F18-39

1215

10K→15K

6.2 - 9.3 mi

Top 29%
×3
+67ft-78ft

Overall

8486

Females

1294

F18-39

1294

15K→20K

9.3 - 12.4 mi

Top 29%
×5
+106ft-86ft

Overall

8543

Females

1359

F18-39

1359

20K→HALF

12.4 - 13.1 mi

Top 25%
×2
+19ft-37ft

Overall

7192

Females

881

F18-39

881

HALF→25K

13.1 - 15.5 mi

Top 28%
×4
+66ft-88ft

Overall

8088

Females

1259

F18-39

1259

25K→30K

15.5 - 18.6 mi

Top 26%
×9
+181ft-148ft

Overall

7618

Females

1214

F18-39

1214

30K→20M

18.6 - 20.0 mi

Top 26%
×5
+64ft-50ft

Overall

7414

Females

1230

F18-39

1230

20M→21M

20.0 - 21.0 mi

Top 26%
×8
+106ft-24ft

Overall

7638

Females

1461

F18-39

1461

21M→35K

21.0 - 21.8 mi

Top 28%
×7
+17ft-86ft

Overall

8211

Females

1637

F18-39

1637

35K→23M

21.8 - 23.0 mi

Top 22%
×5
+23ft-63ft

Overall

6402

Females

1018

F18-39

1018

23M→24M

23.0 - 24.0 mi

Top 21%
×6
+12ft-82ft

Overall

6166

Females

1011

F18-39

1011

24M→40K

24.0 - 24.9 mi

Top 23%
×1
+6ft-20ft

Overall

6605

Females

1203

F18-39

1203

40K→25.2M

24.9 - 25.2 mi

Top 25%
×1
+13ft-16ft

Overall

7303

Females

1541

F18-39

1541

25.2M→FINISH

25.2 - 26.2 mi

Top 21%
×2
+22ft-21ft

Overall

6055

Females

1132

F18-39

1132

Passing

Athletes you passed and who passed you throughout the race

Passing Analysis

Category:
Athletes Passed
1682*
Passed By
885
Net Change
+703
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#8009
5K → 10K149200-145#8009#8154
10K → 15K87190-103#8154#8257
15K → 20K113155-42#8257#8299
20K → HALF691+68#8299#8231
HALF → 25K15573+82#8231#8149
25K → 30K246*77+169#8149#7980
30K → 20M11324+89#7980#7891
20M → 21M10731+76#7891#7815
21M → 35K5238+14#7815#7801
35K → 23M18022+158#7801#7643
23M → 24M12914+115#7643#7528
24M → 40K10822+86#7528#7442
40K → 25.2M3919+20#7442#7422
25.2M → FINISH13519+116#7422#7306
TOTALS1682*885+703

* 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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Qualifying & Age Grade

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OTQ

Olympic Trials Qualifying analysis available

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