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BOSTON MARATHON 2023

Arissa Opalacz

Bib: 12820•F

MA

0:00
0:00
/ mi
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Overall
#0 / 26622
Top 26%
Gender (Female)
#0 / 11423
Top 7%
Division (F18-39)
#0 / 4884
Top 14%
Race Day Weather
49°/39°F
light intensity drizzle

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
22:28
Rank: #7695
Start → 5K
22:28 | 7:14/mi
10K· 6.21 mi
44:29
Rank: #7486 (+209)
5K → 10K
22:01 | 7:05/mi
15K· 9.32 mi
1:06:42
Rank: #7462 (+24)
10K → 15K
22:13 | 7:09/mi
20K· 12.43 mi
1:29:12
Rank: #7396 (+66)
15K → 20K
22:30 | 7:15/mi
Half· 13.11 mi
1:34:06
Rank: #7402 (-6)
20K → Half
4:54 | 7:11/mi
25K· 15.53 mi
1:51:49
Rank: #7363 (+39)
Half → 25K
17:43 | 7:18/mi
30K· 18.64 mi
2:15:03
Rank: #7265 (+98)
25K → 30K
23:14 | 7:29/mi
20M
2:25:12
Rank: #7184 (+81)
30K → 20M
10:09 | 7:28/mi
21M
2:33:03
Rank: #7108 (+76)
20M → 21M
7:51 | 7:51/mi
35K· 21.75 mi
2:38:22
Rank: #7043 (+65)
21M → 35K
5:19 | 7:06/mi
23M
2:47:43
Rank: #6945 (+98)
35K → 23M
9:21 | 7:28/mi
24M
2:55:04
Rank: #6905 (+40)
23M → 24M
7:21 | 7:21/mi
40K· 24.85 mi
3:01:30
Rank: #6876 (+29)
24M → 40K
6:26 | 7:31/mi
25.2M
3:04:14
Rank: #6829 (+47)
40K → 25.2M
2:44 | 7:56/mi
Finish· 26.22 mi
3:11:39
Rank: #6817 (+12)
25.2M → Finish
7:25 | 7:17/mi

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:34:06
Pace7:11 /mi
2nd Half
Distance13.11 mi
Time1:37:33
Pace7:26 /mi
📊Positive Split: 3.7% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:50:0522:287:1422:28
7:14
-
10K
6.21 mi11:12:0644:297:1022:01
7:05
-0:09
15K
9.32 mi11:34:191:06:427:0922:13
7:09
+0:04
20K
12.43 mi11:56:491:29:127:1122:30
7:15
+0:06
Half
13.11 mi12:01:431:34:067:114:54
7:11
-0:04
25K
15.53 mi12:19:261:51:497:1217:43
7:18
+0:07
30K
18.64 mi12:42:402:15:037:1523:14
7:29
+0:11
20M
20.00 mi12:52:492:25:127:1610:09
7:28
-0:01
21M
21.00 mi13:00:402:33:037:177:51
7:51
+0:23
35K
21.75 mi13:05:592:38:227:175:19
7:06
-0:45
23M
23.00 mi13:15:202:47:437:189:21
7:28
+0:22
24M
24.00 mi13:22:412:55:047:187:21
7:21
-0:07
40K
24.85 mi13:29:073:01:307:186:26
7:31
+0:10
25.2M
25.20 mi13:31:513:04:147:192:44
7:56
+0:25
Finish
26.22 mi13:39:163:11:397:197:25
7:17
-0:39

Checkpoints & Pacing

📈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

7:05 /mi

Average Pace

7:19 /mi

Slowest Pace

7:56 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

3:01:04

94% of race

Time at Steady Pace

10:35

6% of race

Time at Slower Pace

0:00

0% of race

Average Pace: 7:19 /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

Overall Pace Trend

CheckpointDistanceTime of DayTimeAvg PaceSegmentPaceTrendRank
5K
3.11 mi10:50:0522:287:1422:28
7:14
#7695
10K
6.21 mi11:12:0644:297:1022:01
7:05
#7486
15K
9.32 mi11:34:191:06:427:0922:13
7:09
#7462
20K
12.43 mi11:56:491:29:127:1122:30
7:15
#7396
Half
13.11 mi12:01:431:34:067:114:54
7:11
#7402
25K
15.53 mi12:19:261:51:497:1217:43
7:18
#7363
30K
18.64 mi12:42:402:15:037:1523:14
7:29
#7265
20M
20.00 mi12:52:492:25:127:1610:09
7:28
#7184
21M
21.00 mi13:00:402:33:037:177:51
7:51
#7108
35K
21.75 mi13:05:592:38:227:175:19
7:06
#7043
23M
23.00 mi13:15:202:47:437:189:21
7:28
#6945
24M
24.00 mi13:22:412:55:047:187:21
7:21
#6905
40K
24.85 mi13:29:073:01:307:186:26
7:31
#6876
25.2M
25.20 mi13:31:513:04:147:192:44
7:56
#6829
Finish
26.22 mi13:39:163:11:397:197:25
7:17
#6817
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF18-39Seg. OverallSeg. FemalesSeg. F18-39
5K3.11 mi3.11 mi76959109107485(Top 28%)889(Top 8%)889(Top 18%)
10K6.21 mi3.10 mi7486+209853+57853+577373(Top 28%)852(Top 7%)852(Top 17%)
15K9.32 mi3.11 mi7462+24856-3856-37485(Top 28%)889(Top 8%)889(Top 18%)
20K12.43 mi3.11 mi7396+66848+8848+87384(Top 28%)893(Top 8%)893(Top 18%)
Half13.11 mi0.68 mi7402-6854-6854-67779(Top 29%)999(Top 9%)999(Top 20%)
25K15.53 mi2.42 mi7363+39850+4850+47341(Top 28%)955(Top 8%)955(Top 20%)
30K18.64 mi3.11 mi7265+98848+2848+27078(Top 27%)948(Top 8%)948(Top 19%)
20M20.00 mi1.36 mi7184+81843+5843+56607(Top 25%)886(Top 8%)886(Top 18%)
21M21.00 mi1.00 mi7108+76829+14829+146472(Top 24%)936(Top 8%)936(Top 19%)
35K21.75 mi0.75 mi7043+65821+8821+85994(Top 23%)764(Top 7%)764(Top 16%)
23M23.00 mi1.25 mi6945+98826-5826-56258(Top 24%)900(Top 8%)900(Top 18%)
24M24.00 mi1.00 mi6905+40832-6832-66740(Top 25%)1162(Top 10%)1162(Top 24%)
40K24.85 mi0.85 mi6876+29837-5837-56872(Top 26%)1303(Top 11%)1303(Top 27%)
25.2M25.20 mi0.35 mi6829+47832+5832+56146(Top 23%)1096(Top 10%)1096(Top 22%)
Finish26.22 mi1.02 mi6817+12845-13845-136987(Top 26%)1414(Top 12%)1414(Top 29%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 28%
×21stories
+97ft-345ft

Overall

7485

Females

889

F18-39

889

5K→10K

3.1 - 6.2 mi

Top 28%
×5stories
+79ft-138ft

Overall

7373

Females

852

F18-39

852

10K→15K

6.2 - 9.3 mi

Top 28%
×3stories
+67ft-78ft

Overall

7485

Females

889

F18-39

889

15K→20K

9.3 - 12.4 mi

Top 28%
×5stories
+106ft-86ft

Overall

7384

Females

893

F18-39

893

20K→Half

12.4 - 13.1 mi

Top 29%
×2stories
+19ft-37ft

Overall

7779

Females

999

F18-39

999

Half→25K

13.1 - 15.5 mi

Top 28%
×4stories
+66ft-88ft

Overall

7341

Females

955

F18-39

955

25K→30K

15.5 - 18.6 mi

Top 27%
×9stories
+181ft-148ft

Overall

7078

Females

948

F18-39

948

30K→20M

18.6 - 20.0 mi

Top 25%
×5stories
+64ft-50ft

Overall

6607

Females

886

F18-39

886

20M→21M

20.0 - 21.0 mi

Top 24%
×8stories
+106ft-24ft

Overall

6472

Females

936

F18-39

936

21M→35K

21.0 - 21.8 mi

Top 23%
×7stories
+17ft-86ft

Overall

5994

Females

764

F18-39

764

35K→23M

21.8 - 23.0 mi

Top 24%
×5stories
+23ft-63ft

Overall

6258

Females

900

F18-39

900

23M→24M

23.0 - 24.0 mi

Top 25%
×6stories
+12ft-82ft

Overall

6740

Females

1162

F18-39

1162

24M→40K

24.0 - 24.9 mi

Top 26%
×1story
+6ft-20ft

Overall

6872

Females

1303

F18-39

1303

40K→25.2M

24.9 - 25.2 mi

Top 23%
×1story
+13ft-16ft

Overall

6146

Females

1096

F18-39

1096

25.2M→Finish

25.2 - 26.2 mi

Top 26%
×2stories
+22ft-21ft

Overall

6987

Females

1414

F18-39

1414

Passing Analysis

Category:
Athletes Passed
1566
Passed By
688
Net Change
+878
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#7695
5K → 10K339130+209#7695#7486
10K → 15K143119+24#7486#7462
15K → 20K14579+66#7462#7396
20K → Half2026-6#7396#7402
Half → 25K9859+39#7402#7363
25K → 30K16971+98#7363#7265
30K → 20M10423+81#7265#7184
20M → 21M10226+76#7184#7108
21M → 35K749+65#7108#7043
35K → 23M12931+98#7043#6945
23M → 24M6828+40#6945#6905
24M → 40K6536+29#6905#6876
40K → 25.2M558+47#6876#6829
25.2M → Finish5543+12#6829#6817
TOTALS1566688+878
📊

Passing Visuals

Category:
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🔥Passing Intensity

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🔄Passing Circle

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🌊Position Flow

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🏃Race Lanes

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Public Race Data

Boston Athletic Association

Boston Athletic Association

Mika Timing

Mika Timing