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BOSTON MARATHON 2023

Brian Chorba

Bib: 21390•M

IN

0:00
0:00
/ mi
Masters
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Overall
#0 / 26622
Gender (Male)
#0 / 15176
Masters (Masters Men)
#0 / 9891
Division (M65-69)
#0 / 549
Top 29%
Race Day Weather
49°/39°F
light intensity drizzle

⏱️ Race Timeline

Course Elevation
7–469 ft
≈
×2stacked redwood trees
•▲ 890 ft climb · ▼ 1342 ft descent
Ribbon color based on
FasterSteadySlower· vs. your average pace
Start
0:00
Race begins
5K· 3.11 mi
8:56/mi
27:44
↑ 97↓ 3451.5%
10K· 6.21 mi
8:36/mi
54:26
↑ 79↓ 1380.4%
15K· 9.32 mi
8:18/mi
1:20:12
↑ 67↓ 78
20K· 12.43 mi
8:29/mi
1:46:34
↑ 106↓ 860.1%
Half· 13.11 mi
8:10/mi
1:52:08
↑ 19↓ 370.5%
25K· 15.53 mi
8:39/mi
2:13:07
↑ 66↓ 880.2%
30K· 18.64 mi
9:01/mi
2:41:08
↑ 181↓ 1480.2%
20M
8:59/mi
2:53:21
↑ 64↓ 500.2%
21M
10:08/mi
3:03:29
↑ 106↓ 241.6%
35K· 21.75 mi
8:43/mi
3:10:00
↑ 17↓ 861.7%
23M
9:47/mi
3:22:15
↑ 23↓ 630.6%
24M
8:50/mi
3:31:05
↓ 821.3%
40K· 24.85 mi
9:18/mi
3:39:02
↓ 200.3%
25.2M
10:29/mi
3:42:39
↑ 13↓ 160.2%
Finish· 26.22 mi
8:57/mi
3:51:46
↑ 22↓ 21

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:52:08
Pace8:33 /mi
2nd Half
Distance13.11 mi
Time1:59:38
Pace9:08 /mi
📊Positive Split: 6.7% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:21:0127:448:5627:44
8:56
-
10K
6.21 mi11:47:4354:268:4626:42
8:36
-0:20
15K
9.32 mi12:13:291:20:128:3625:46
8:18
-0:18
20K
12.43 mi12:39:511:46:348:3526:22
8:29
+0:11
Half
13.11 mi12:45:251:52:088:335:34
8:10
-0:19
25K
15.53 mi13:06:242:13:078:3420:59
8:39
+0:29
30K
18.64 mi13:34:252:41:088:3928:01
9:01
+0:22
20M
20.00 mi13:46:382:53:218:4012:13
8:59
-0:02
21M
21.00 mi13:56:463:03:298:4410:08
10:08
+1:09
35K
21.75 mi14:03:173:10:008:446:31
8:43
-1:25
23M
23.00 mi14:15:323:22:158:4812:15
9:47
+1:04
24M
24.00 mi14:24:223:31:058:488:50
8:50
-0:57
40K
24.85 mi14:32:193:39:028:497:57
9:18
+0:28
25.2M
25.20 mi14:35:563:42:398:503:37
10:29
+1:11
Finish
26.22 mi14:45:033:51:468:519:07
8:57
-1:32

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

8:10 /mi

Average Pace

8:51 /mi

Slowest Pace

10:29 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

1:24:24

36% of race

Time at Steady Pace

1:53:25

49% of race

Time at Slower Pace

33:57

15% of race

Average Pace: 8:50 /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

Overall Pace Trend

CheckpointDistanceTime of DayTimeAvg PaceSegmentPaceTrendRank
5K
3.11 mi11:21:0127:448:5627:44
8:56
#20097
10K
6.21 mi11:47:4354:268:4626:42
8:36
#19454
15K
9.32 mi12:13:291:20:128:3625:46
8:18
#18495
20K
12.43 mi12:39:511:46:348:3526:22
8:29
#18052
Half
13.11 mi12:45:251:52:088:335:34
8:10
#17922
25K
15.53 mi13:06:242:13:078:3420:59
8:39
#17741
30K
18.64 mi13:34:252:41:088:3928:01
9:01
#17628
20M
20.00 mi13:46:382:53:218:4012:13
8:59
#17531
21M
21.00 mi13:56:463:03:298:4410:08
10:08
#17610
35K
21.75 mi14:03:173:10:008:446:31
8:43
#17564
23M
23.00 mi14:15:323:22:158:4812:15
9:47
#17722
24M
24.00 mi14:24:223:31:058:488:50
8:50
#17678
40K
24.85 mi14:32:193:39:028:497:57
9:18
#17691
25.2M
25.20 mi14:35:563:42:398:503:37
10:29
#17733
Finish
26.22 mi14:45:033:51:468:519:07
8:57
#17736
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM65-69Seg. OverallSeg. MalesSeg. M65-69
5K3.11 mi3.11 mi20097122001220016493(Top 62%)10884(Top 72%)10884(Top 1983%)
10K6.21 mi3.10 mi19454+64312001+19912001+19918804(Top 71%)11820(Top 78%)11820(Top 2153%)
15K9.32 mi3.11 mi18495+95911661+34011661+34016493(Top 62%)10884(Top 72%)10884(Top 1983%)
20K12.43 mi3.11 mi18052+44311487+17411487+17416760(Top 63%)10947(Top 72%)10947(Top 1994%)
Half13.11 mi0.68 mi17922+13011427+6011427+6015484(Top 58%)10501(Top 69%)10501(Top 1913%)
25K15.53 mi2.42 mi17741+18111343+8411343+8417125(Top 64%)11031(Top 73%)11031(Top 2009%)
30K18.64 mi3.11 mi17628+11311273+7011273+7017265(Top 65%)11023(Top 73%)11023(Top 2008%)
20M20.00 mi1.36 mi17531+9711214+5911214+5916476(Top 62%)10610(Top 70%)10610(Top 1933%)
21M21.00 mi1.00 mi17610-7911226-1211226-1218488(Top 69%)11419(Top 75%)11419(Top 2080%)
35K21.75 mi0.75 mi17564+4611194+3211194+3216449(Top 62%)10466(Top 69%)10466(Top 1906%)
23M23.00 mi1.25 mi17722-15811247-5311247-5319369(Top 73%)11727(Top 77%)11727(Top 2136%)
24M24.00 mi1.00 mi17678+4411216+3111216+3116380(Top 62%)10349(Top 68%)10349(Top 1885%)
40K24.85 mi0.85 mi17691-1311217-111217-117502(Top 66%)10800(Top 71%)10800(Top 1967%)
25.2M25.20 mi0.35 mi17733-4211228-1111228-1119021(Top 71%)11477(Top 76%)11477(Top 2091%)
Finish26.22 mi1.02 mi17736-311218+1011218+1017685(Top 66%)10916(Top 72%)10916(Top 1988%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 62%
×21story building
+97ft-345ft

Overall

16493

Males

10884

M65-69

10884

5K→10K

3.1 - 6.2 mi

Top 71%
×5story building
+79ft-138ft

Overall

18804

Males

11820

M65-69

11820

10K→15K

6.2 - 9.3 mi

Top 62%
×3story building
+67ft-78ft

Overall

16493

Males

10884

M65-69

10884

15K→20K

9.3 - 12.4 mi

Top 63%
×5story building
+106ft-86ft

Overall

16760

Males

10947

M65-69

10947

20K→Half

12.4 - 13.1 mi

Top 58%
×2story building
+19ft-37ft

Overall

15484

Males

10501

M65-69

10501

Half→25K

13.1 - 15.5 mi

Top 64%
×4story building
+66ft-88ft

Overall

17125

Males

11031

M65-69

11031

25K→30K

15.5 - 18.6 mi

Top 65%
×9story building
+181ft-148ft

Overall

17265

Males

11023

M65-69

11023

30K→20M

18.6 - 20.0 mi

Top 62%
×5story building
+64ft-50ft

Overall

16476

Males

10610

M65-69

10610

20M→21M

20.0 - 21.0 mi

Top 69%
×8story building
+106ft-24ft

Overall

18488

Males

11419

M65-69

11419

21M→35K

21.0 - 21.8 mi

Top 62%
×7story building
+17ft-86ft

Overall

16449

Males

10466

M65-69

10466

35K→23M

21.8 - 23.0 mi

Top 73%
×5story building
+23ft-63ft

Overall

19369

Males

11727

M65-69

11727

23M→24M

23.0 - 24.0 mi

Top 62%
×6story building
+12ft-82ft

Overall

16380

Males

10349

M65-69

10349

24M→40K

24.0 - 24.9 mi

Top 66%
×1story
+6ft-20ft

Overall

17502

Males

10800

M65-69

10800

40K→25.2M

24.9 - 25.2 mi

Top 71%
×1story
+13ft-16ft

Overall

19021

Males

11477

M65-69

11477

25.2M→Finish

25.2 - 26.2 mi

Top 66%
×2story building
+22ft-21ft

Overall

17685

Males

10916

M65-69

10916

Passing Analysis

Category:
Athletes Passed
3287
Passed By
926
Net Change
+2361
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#20097
5K → 10K753110+643#20097#19454
10K → 15K97314+959#19454#18495
15K → 20K46724+443#18495#18052
20K → Half1322+130#18052#17922
Half → 25K21938+181#17922#17741
25K → 30K232119+113#17741#17628
30K → 20M13134+97#17628#17531
20M → 21M61140-79#17531#17610
21M → 35K7024+46#17610#17564
35K → 23M46204-158#17564#17722
23M → 24M8339+44#17722#17678
24M → 40K5164-13#17678#17691
40K → 25.2M1052-42#17691#17733
25.2M → Finish5962-3#17733#17736
TOTALS3287926+2361
📊

Passing Visuals

Category:
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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