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BOSTON MARATHON 2023

Derek Byrnes

Bib: 1434•M

FL

0:00
0:00
/ mi
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Overall
#0 / 26622
Top 8%
Gender (Male)
#0 / 15176
Top 13%
Division (M18-39)
#0 / 5285
Top 29%
Race Day Weather
49°/39°F
light intensity drizzle

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
19:28
Rank: #1321
Start → 5K
19:28 | 6:16/mi
10K· 6.21 mi
38:43
Rank: #1306 (+15)
5K → 10K
19:15 | 6:12/mi
15K· 9.32 mi
58:07
Rank: #1309 (-3)
10K → 15K
19:24 | 6:15/mi
20K· 12.43 mi
1:17:51
Rank: #1360 (-51)
15K → 20K
19:44 | 6:21/mi
Half· 13.11 mi
1:22:10
Rank: #1385 (-25)
20K → Half
4:19 | 6:20/mi
25K· 15.53 mi
1:37:43
Rank: #1434 (-49)
Half → 25K
15:33 | 6:25/mi
30K· 18.64 mi
1:58:26
Rank: #1555 (-121)
25K → 30K
20:43 | 6:40/mi
20M
2:07:34
Rank: #1599 (-44)
30K → 20M
9:08 | 6:43/mi
21M
2:14:49
Rank: #1643 (-44)
20M → 21M
7:15 | 7:15/mi
35K· 21.75 mi
2:19:47
Rank: #1675 (-32)
21M → 35K
4:58 | 6:38/mi
23M
2:28:27
Rank: #1741 (-66)
35K → 23M
8:40 | 6:55/mi
24M
2:35:24
Rank: #1819 (-78)
23M → 24M
6:57 | 6:57/mi
40K· 24.85 mi
2:41:38
Rank: #1906 (-87)
24M → 40K
6:14 | 7:17/mi
25.2M
2:44:24
Rank: #1952 (-46)
40K → 25.2M
2:46 | 8:01/mi
Finish· 26.22 mi
2:51:37
Rank: #2041 (-89)
25.2M → Finish
7:13 | 7:05/mi

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:22:10
Pace6:16 /mi
2nd Half
Distance13.11 mi
Time1:29:27
Pace6:49 /mi
📊Positive Split: 8.9% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:19:5519:286:1619:28
6:16
-
10K
6.21 mi10:39:1038:436:1419:15
6:12
-0:04
15K
9.32 mi10:58:3458:076:1419:24
6:15
+0:03
20K
12.43 mi11:18:181:17:516:1619:44
6:21
+0:06
Half
13.11 mi11:22:371:22:106:164:19
6:20
-0:01
25K
15.53 mi11:38:101:37:436:1715:33
6:25
+0:05
30K
18.64 mi11:58:531:58:266:2120:43
6:40
+0:15
20M
20.00 mi12:08:012:07:346:239:08
6:43
+0:03
21M
21.00 mi12:15:162:14:496:257:15
7:15
+0:32
35K
21.75 mi12:20:142:19:476:264:58
6:38
-0:37
23M
23.00 mi12:28:542:28:276:278:40
6:55
+0:17
24M
24.00 mi12:35:512:35:246:296:57
6:57
+0:02
40K
24.85 mi12:42:052:41:386:306:14
7:17
+0:20
25.2M
25.20 mi12:44:512:44:246:312:46
8:01
+0:44
Finish
26.22 mi12:52:042:51:376:337:13
7:05
-0:56

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

6:12 /mi

Average Pace

6:33 /mi

Slowest Pace

8:01 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

1:37:43

57% of race

Time at Steady Pace

34:49

20% of race

Time at Slower Pace

39:05

23% of race

Average Pace: 6:33 /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 mi10:19:5519:286:1619:28
6:16
#1321
10K
6.21 mi10:39:1038:436:1419:15
6:12
#1306
15K
9.32 mi10:58:3458:076:1419:24
6:15
#1309
20K
12.43 mi11:18:181:17:516:1619:44
6:21
#1360
Half
13.11 mi11:22:371:22:106:164:19
6:20
#1385
25K
15.53 mi11:38:101:37:436:1715:33
6:25
#1434
30K
18.64 mi11:58:531:58:266:2120:43
6:40
#1555
20M
20.00 mi12:08:012:07:346:239:08
6:43
#1599
21M
21.00 mi12:15:162:14:496:257:15
7:15
#1643
35K
21.75 mi12:20:142:19:476:264:58
6:38
#1675
23M
23.00 mi12:28:542:28:276:278:40
6:55
#1741
24M
24.00 mi12:35:512:35:246:296:57
6:57
#1819
40K
24.85 mi12:42:052:41:386:306:14
7:17
#1906
25.2M
25.20 mi12:44:512:44:246:312:46
8:01
#1952
Finish
26.22 mi12:52:042:51:376:337:13
7:05
#2041
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM18-39Seg. OverallSeg. MalesSeg. M18-39
5K3.11 mi3.11 mi1321125512551411(Top 5%)1344(Top 9%)1344(Top 25%)
10K6.21 mi3.10 mi1306+151241+141241+141349(Top 5%)1286(Top 8%)1286(Top 24%)
15K9.32 mi3.11 mi1309-31246-51246-51411(Top 5%)1344(Top 9%)1344(Top 25%)
20K12.43 mi3.11 mi1360-511294-481294-481610(Top 6%)1540(Top 10%)1540(Top 29%)
Half13.11 mi0.68 mi1385-251320-261320-261897(Top 7%)1822(Top 12%)1822(Top 34%)
25K15.53 mi2.42 mi1434-491371-511371-511784(Top 7%)1708(Top 11%)1708(Top 32%)
30K18.64 mi3.11 mi1555-1211486-1151486-1152248(Top 8%)2143(Top 14%)2143(Top 41%)
20M20.00 mi1.36 mi1599-441528-421528-422362(Top 9%)2238(Top 15%)2238(Top 42%)
21M21.00 mi1.00 mi1643-441570-421570-423318(Top 12%)3088(Top 20%)3088(Top 58%)
35K21.75 mi0.75 mi1675-321602-321602-323181(Top 12%)2966(Top 20%)2966(Top 56%)
23M23.00 mi1.25 mi1741-661666-641666-643337(Top 13%)3090(Top 20%)3090(Top 58%)
24M24.00 mi1.00 mi1819-781739-731739-734385(Top 16%)3960(Top 26%)3960(Top 75%)
40K24.85 mi0.85 mi1906-871823-841823-845315(Top 20%)4545(Top 30%)4545(Top 86%)
25.2M25.20 mi0.35 mi1952-461868-451868-456501(Top 24%)5227(Top 34%)5227(Top 99%)
Finish26.22 mi1.02 mi2041-891957-891957-895670(Top 21%)4697(Top 31%)4697(Top 89%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 5%
×21stories
+97ft-345ft

Overall

1411

Males

1344

M18-39

1344

5K→10K

3.1 - 6.2 mi

Top 5%
×5stories
+79ft-138ft

Overall

1349

Males

1286

M18-39

1286

10K→15K

6.2 - 9.3 mi

Top 5%
×3stories
+67ft-78ft

Overall

1411

Males

1344

M18-39

1344

15K→20K

9.3 - 12.4 mi

Top 6%
×5stories
+106ft-86ft

Overall

1610

Males

1540

M18-39

1540

20K→Half

12.4 - 13.1 mi

Top 7%
×2stories
+19ft-37ft

Overall

1897

Males

1822

M18-39

1822

Half→25K

13.1 - 15.5 mi

Top 7%
×4stories
+66ft-88ft

Overall

1784

Males

1708

M18-39

1708

25K→30K

15.5 - 18.6 mi

Top 8%
×9stories
+181ft-148ft

Overall

2248

Males

2143

M18-39

2143

30K→20M

18.6 - 20.0 mi

Top 9%
×5stories
+64ft-50ft

Overall

2362

Males

2238

M18-39

2238

20M→21M

20.0 - 21.0 mi

Top 12%
×8stories
+106ft-24ft

Overall

3318

Males

3088

M18-39

3088

21M→35K

21.0 - 21.8 mi

Top 12%
×7stories
+17ft-86ft

Overall

3181

Males

2966

M18-39

2966

35K→23M

21.8 - 23.0 mi

Top 13%
×5stories
+23ft-63ft

Overall

3337

Males

3090

M18-39

3090

23M→24M

23.0 - 24.0 mi

Top 16%
×6stories
+12ft-82ft

Overall

4385

Males

3960

M18-39

3960

24M→40K

24.0 - 24.9 mi

Top 20%
×1story
+6ft-20ft

Overall

5315

Males

4545

M18-39

4545

40K→25.2M

24.9 - 25.2 mi

Top 24%
×1story
+13ft-16ft

Overall

6501

Males

5227

M18-39

5227

25.2M→Finish

25.2 - 26.2 mi

Top 21%
×2stories
+22ft-21ft

Overall

5670

Males

4697

M18-39

4697

Passing Analysis

Category:
Athletes Passed
277
Passed By
997
Net Change
-720
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#1321
5K → 10K8873+15#1321#1306
10K → 15K4447-3#1306#1309
15K → 20K2576-51#1309#1360
20K → Half429-25#1360#1385
Half → 25K1867-49#1385#1434
25K → 30K23144-121#1434#1555
30K → 20M1458-44#1555#1599
20M → 21M1054-44#1599#1643
21M → 35K840-32#1643#1675
35K → 23M1581-66#1675#1741
23M → 24M886-78#1741#1819
24M → 40K592-87#1819#1906
40K → 25.2M349-46#1906#1952
25.2M → Finish12101-89#1952#2041
TOTALS277997-720
📊

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