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BOSTON MARATHON 2023

Thomas Bailey

Bib: 4028•M

MI

0:00
0:00
/ mi
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Overall
#0 / 26622
Top 5%
Gender (Male)
#0 / 15176
Top 8%
Division (M18-39)
#0 / 5285
Top 20%
Race Day Weather
49°/39°F
light intensity drizzle

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
19:51
Rank: #1783
Start → 5K
19:51 | 6:23/mi
10K· 6.21 mi
39:19
Rank: #1687 (+96)
5K → 10K
19:28 | 6:16/mi
15K· 9.32 mi
58:43
Rank: #1582 (+105)
10K → 15K
19:24 | 6:15/mi
20K· 12.43 mi
1:18:18
Rank: #1537 (+45)
15K → 20K
19:35 | 6:18/mi
Half· 13.11 mi
1:22:33
Rank: #1530 (+7)
20K → Half
4:15 | 6:14/mi
25K· 15.53 mi
1:37:48
Rank: #1463 (+67)
Half → 25K
15:15 | 6:17/mi
30K· 18.64 mi
1:57:45
Rank: #1402 (+61)
25K → 30K
19:57 | 6:25/mi
20M
2:06:23
Rank: #1369 (+33)
30K → 20M
8:38 | 6:21/mi
21M
2:13:08
Rank: #1344 (+25)
20M → 21M
6:45 | 6:45/mi
35K· 21.75 mi
2:17:44
Rank: #1320 (+24)
21M → 35K
4:36 | 6:09/mi
23M
2:25:48
Rank: #1296 (+24)
35K → 23M
8:04 | 6:27/mi
24M
2:32:09
Rank: #1284 (+12)
23M → 24M
6:21 | 6:21/mi
40K· 24.85 mi
2:37:39
Rank: #1267 (+17)
24M → 40K
5:30 | 6:26/mi
25.2M
2:40:09
Rank: #1281 (-14)
40K → 25.2M
2:30 | 7:15/mi
Finish· 26.22 mi
2:46:59
Rank: #1323 (-42)
25.2M → Finish
6:50 | 6:42/mi

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:22:33
Pace6:18 /mi
2nd Half
Distance13.11 mi
Time1:24:26
Pace6:26 /mi
📊Positive Split: 2.3% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:21:3519:516:2319:51
6:23
-
10K
6.21 mi10:41:0339:196:2019:28
6:16
-0:07
15K
9.32 mi11:00:2758:436:1819:24
6:15
-0:01
20K
12.43 mi11:20:021:18:186:1819:35
6:18
+0:03
Half
13.11 mi11:24:171:22:336:184:15
6:14
-0:04
25K
15.53 mi11:39:321:37:486:1815:15
6:17
+0:03
30K
18.64 mi11:59:291:57:456:1919:57
6:25
+0:08
20M
20.00 mi12:08:072:06:236:198:38
6:21
-0:04
21M
21.00 mi12:14:522:13:086:206:45
6:45
+0:24
35K
21.75 mi12:19:282:17:446:204:36
6:09
-0:36
23M
23.00 mi12:27:322:25:486:208:04
6:27
+0:18
24M
24.00 mi12:33:532:32:096:206:21
6:21
-0:06
40K
24.85 mi12:39:232:37:396:215:30
6:26
+0:05
25.2M
25.20 mi12:41:532:40:096:212:30
7:15
+0:49
Finish
26.22 mi12:48:432:46:596:226:50
6:42
-0:33

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

6:09 /mi

Average Pace

6:22 /mi

Slowest Pace

7:15 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

2:44:29

99% of race

Time at Steady Pace

2:30

1% of race

Time at Slower Pace

0:00

0% of race

Average Pace: 6:22 /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 mi10:21:3519:516:2319:51
6:23
#1783
10K
6.21 mi10:41:0339:196:2019:28
6:16
#1687
15K
9.32 mi11:00:2758:436:1819:24
6:15
#1582
20K
12.43 mi11:20:021:18:186:1819:35
6:18
#1537
Half
13.11 mi11:24:171:22:336:184:15
6:14
#1530
25K
15.53 mi11:39:321:37:486:1815:15
6:17
#1463
30K
18.64 mi11:59:291:57:456:1919:57
6:25
#1402
20M
20.00 mi12:08:072:06:236:198:38
6:21
#1369
21M
21.00 mi12:14:522:13:086:206:45
6:45
#1344
35K
21.75 mi12:19:282:17:446:204:36
6:09
#1320
23M
23.00 mi12:27:322:25:486:208:04
6:27
#1296
24M
24.00 mi12:33:532:32:096:206:21
6:21
#1284
40K
24.85 mi12:39:232:37:396:215:30
6:26
#1267
25.2M
25.20 mi12:41:532:40:096:212:30
7:15
#1281
Finish
26.22 mi12:48:432:46:596:226:50
6:42
#1323
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM18-39Seg. OverallSeg. MalesSeg. M18-39
5K3.11 mi3.11 mi1783169916991419(Top 5%)1352(Top 9%)1352(Top 26%)
10K6.21 mi3.10 mi1687+961611+881611+881623(Top 6%)1549(Top 10%)1549(Top 29%)
15K9.32 mi3.11 mi1582+1051511+1001511+1001419(Top 5%)1352(Top 9%)1352(Top 26%)
20K12.43 mi3.11 mi1537+451468+431468+431408(Top 5%)1345(Top 9%)1345(Top 25%)
Half13.11 mi0.68 mi1530+71461+71461+71543(Top 6%)1478(Top 10%)1478(Top 28%)
25K15.53 mi2.42 mi1463+671397+641397+641313(Top 5%)1253(Top 8%)1253(Top 24%)
30K18.64 mi3.11 mi1402+611339+581339+581287(Top 5%)1229(Top 8%)1229(Top 23%)
20M20.00 mi1.36 mi1369+331308+311308+311019(Top 4%)975(Top 6%)975(Top 18%)
21M21.00 mi1.00 mi1344+251283+251283+251280(Top 5%)1221(Top 8%)1221(Top 23%)
35K21.75 mi0.75 mi1320+241260+231260+231119(Top 4%)1063(Top 7%)1063(Top 20%)
23M23.00 mi1.25 mi1296+241237+231237+231262(Top 5%)1193(Top 8%)1193(Top 23%)
24M24.00 mi1.00 mi1284+121225+121225+121536(Top 6%)1452(Top 10%)1452(Top 27%)
40K24.85 mi0.85 mi1267+171209+161209+161349(Top 5%)1272(Top 8%)1272(Top 24%)
25.2M25.20 mi0.35 mi1281-141220-111220-112824(Top 11%)2580(Top 17%)2580(Top 49%)
Finish26.22 mi1.02 mi1323-421259-391259-393589(Top 13%)3203(Top 21%)3203(Top 61%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 5%
×21stories
+97ft-345ft

Overall

1419

Males

1352

M18-39

1352

5K→10K

3.1 - 6.2 mi

Top 6%
×5stories
+79ft-138ft

Overall

1623

Males

1549

M18-39

1549

10K→15K

6.2 - 9.3 mi

Top 5%
×3stories
+67ft-78ft

Overall

1419

Males

1352

M18-39

1352

15K→20K

9.3 - 12.4 mi

Top 5%
×5stories
+106ft-86ft

Overall

1408

Males

1345

M18-39

1345

20K→Half

12.4 - 13.1 mi

Top 6%
×2stories
+19ft-37ft

Overall

1543

Males

1478

M18-39

1478

Half→25K

13.1 - 15.5 mi

Top 5%
×4stories
+66ft-88ft

Overall

1313

Males

1253

M18-39

1253

25K→30K

15.5 - 18.6 mi

Top 5%
×9stories
+181ft-148ft

Overall

1287

Males

1229

M18-39

1229

30K→20M

18.6 - 20.0 mi

Top 4%
×5stories
+64ft-50ft

Overall

1019

Males

975

M18-39

975

20M→21M

20.0 - 21.0 mi

Top 5%
×8stories
+106ft-24ft

Overall

1280

Males

1221

M18-39

1221

21M→35K

21.0 - 21.8 mi

Top 4%
×7stories
+17ft-86ft

Overall

1119

Males

1063

M18-39

1063

35K→23M

21.8 - 23.0 mi

Top 5%
×5stories
+23ft-63ft

Overall

1262

Males

1193

M18-39

1193

23M→24M

23.0 - 24.0 mi

Top 6%
×6stories
+12ft-82ft

Overall

1536

Males

1452

M18-39

1452

24M→40K

24.0 - 24.9 mi

Top 5%
×1story
+6ft-20ft

Overall

1349

Males

1272

M18-39

1272

40K→25.2M

24.9 - 25.2 mi

Top 11%
×1story
+13ft-16ft

Overall

2824

Males

2580

M18-39

2580

25.2M→Finish

25.2 - 26.2 mi

Top 13%
×2stories
+22ft-21ft

Overall

3589

Males

3203

M18-39

3203

Passing Analysis

Category:
Athletes Passed
720
Passed By
260
Net Change
+460
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#1783
5K → 10K14549+96#1783#1687
10K → 15K12520+105#1687#1582
15K → 20K6722+45#1582#1537
20K → Half136+7#1537#1530
Half → 25K8013+67#1530#1463
25K → 30K8827+61#1463#1402
30K → 20M396+33#1402#1369
20M → 21M316+25#1369#1344
21M → 35K284+24#1344#1320
35K → 23M3814+24#1320#1296
23M → 24M2513+12#1296#1284
24M → 40K269+17#1284#1267
40K → 25.2M418-14#1267#1281
25.2M → Finish1153-42#1281#1323
TOTALS720260+460
📊

Passing Visuals

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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Public Race Data

Boston Athletic Association

Boston Athletic Association

Mika Timing

Mika Timing