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BOSTON MARATHON 2023

Huw Thomas

Bib: 15600•M

0:00
0:00
/ mi
Masters
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Overall
#0 / 26622
Top 43%
Gender (Male)
#0 / 15176
Masters (Masters Men)
#0 / 9891
Top 47%
Division (M50-54)
#0 / 2052
Top 50%
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
7:22/mi
22:52
↑ 97↓ 3451.5%
10K· 6.21 mi
7:16/mi
45:27
↑ 79↓ 1380.4%
15K· 9.32 mi
7:17/mi
1:08:06
↑ 67↓ 78
20K· 12.43 mi
7:43/mi
1:32:03
↑ 106↓ 860.1%
Half· 13.11 mi
7:43/mi
1:37:19
↑ 19↓ 370.5%
25K· 15.53 mi
8:00/mi
1:56:44
↑ 66↓ 880.2%
30K· 18.64 mi
7:59/mi
2:21:32
↑ 181↓ 1480.2%
20M
8:16/mi
2:32:46
↑ 64↓ 500.2%
21M
8:35/mi
2:41:21
↑ 106↓ 241.6%
35K· 21.75 mi
7:56/mi
2:47:17
↑ 17↓ 861.7%
23M
8:31/mi
2:57:57
↑ 23↓ 630.6%
24M
8:41/mi
3:06:38
↓ 821.3%
40K· 24.85 mi
9:18/mi
3:14:35
↓ 200.3%
25.2M
10:12/mi
3:18:06
↑ 13↓ 160.2%
Finish· 26.22 mi
9:01/mi
3:27:17
↑ 22↓ 21

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:37:19
Pace7:25 /mi
2nd Half
Distance13.11 mi
Time1:49:58
Pace8:23 /mi
📊Positive Split: 13.0% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:53:0322:527:2222:52
7:22
-
10K
6.21 mi11:15:3845:277:1922:35
7:16
-0:06
15K
9.32 mi11:38:171:08:067:1822:39
7:17
+0:01
20K
12.43 mi12:02:141:32:037:2423:57
7:43
+0:26
Half
13.11 mi12:07:301:37:197:255:16
7:43
0:00
25K
15.53 mi12:26:551:56:447:3119:25
8:00
+0:17
30K
18.64 mi12:51:432:21:327:3624:48
7:59
-0:01
20M
20.00 mi13:02:572:32:467:3811:14
8:16
+0:17
21M
21.00 mi13:11:322:41:217:418:35
8:35
+0:19
35K
21.75 mi13:17:282:47:177:425:56
7:56
-0:39
23M
23.00 mi13:28:082:57:577:4410:40
8:31
+0:35
24M
24.00 mi13:36:493:06:387:478:41
8:41
+0:10
40K
24.85 mi13:44:463:14:357:507:57
9:18
+0:37
25.2M
25.20 mi13:48:173:18:067:523:31
10:12
+0:54
Finish
26.22 mi13:57:283:27:177:559:11
9:01
-1:11

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

7:16 /mi

Average Pace

7:55 /mi

Slowest Pace

10:12 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

1:08:06

33% of race

Time at Steady Pace

1:30:36

44% of race

Time at Slower Pace

48:35

23% of race

Average Pace: 7:54 /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 mi10:53:0322:527:2222:52
7:22
#8512
10K
6.21 mi11:15:3845:277:1922:35
7:16
#8542
15K
9.32 mi11:38:171:08:067:1822:39
7:17
#8502
20K
12.43 mi12:02:141:32:037:2423:57
7:43
#9053
Half
13.11 mi12:07:301:37:197:255:16
7:43
#9201
25K
15.53 mi12:26:551:56:447:3119:25
8:00
#9774
30K
18.64 mi12:51:432:21:327:3624:48
7:59
#9920
20M
20.00 mi13:02:572:32:467:3811:14
8:16
#10055
21M
21.00 mi13:11:322:41:217:418:35
8:35
#10081
35K
21.75 mi13:17:282:47:177:425:56
7:56
#10133
23M
23.00 mi13:28:082:57:577:4410:40
8:31
#10303
24M
24.00 mi13:36:493:06:387:478:41
8:41
#10554
40K
24.85 mi13:44:463:14:357:507:57
9:18
#10864
25.2M
25.20 mi13:48:173:18:067:523:31
10:12
#11019
Finish
26.22 mi13:57:283:27:177:559:11
9:01
#11394
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM50-54Seg. OverallSeg. MalesSeg. M50-54
5K3.11 mi3.11 mi8512731273128480(Top 32%)7230(Top 48%)7230(Top 352%)
10K6.21 mi3.10 mi8542-307299+137299+138631(Top 32%)7350(Top 48%)7350(Top 358%)
15K9.32 mi3.11 mi8502+407270+297270+298480(Top 32%)7230(Top 48%)7230(Top 352%)
20K12.43 mi3.11 mi9053-5517583-3137583-31310980(Top 41%)8570(Top 56%)8570(Top 418%)
Half13.11 mi0.68 mi9201-1487670-877670-8711981(Top 45%)9058(Top 60%)9058(Top 441%)
25K15.53 mi2.42 mi9774-5738009-3398009-33912795(Top 48%)9254(Top 61%)9254(Top 451%)
30K18.64 mi3.11 mi9920-1468048-398048-3910748(Top 40%)8221(Top 54%)8221(Top 401%)
20M20.00 mi1.36 mi10055-1358094-468094-4612114(Top 46%)8751(Top 58%)8751(Top 426%)
21M21.00 mi1.00 mi10081-268085+98085+910955(Top 41%)8100(Top 53%)8100(Top 395%)
35K21.75 mi0.75 mi10133-528096-118096-1111588(Top 44%)8380(Top 55%)8380(Top 408%)
23M23.00 mi1.25 mi10303-1708142-468142-4613332(Top 50%)9055(Top 60%)9055(Top 441%)
24M24.00 mi1.00 mi10554-2518228-868228-8615523(Top 58%)9948(Top 66%)9948(Top 485%)
40K24.85 mi0.85 mi10864-3108364-1368364-13617481(Top 66%)10779(Top 71%)10779(Top 525%)
25.2M25.20 mi0.35 mi11019-1558429-658429-6518042(Top 68%)11025(Top 73%)11025(Top 537%)
Finish26.22 mi1.02 mi11394-3758588-1598588-15918000(Top 68%)11060(Top 73%)11060(Top 539%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 32%
×21story building
+97ft-345ft

Overall

8480

Males

7230

M50-54

7230

5K→10K

3.1 - 6.2 mi

Top 32%
×5story building
+79ft-138ft

Overall

8631

Males

7350

M50-54

7350

10K→15K

6.2 - 9.3 mi

Top 32%
×3story building
+67ft-78ft

Overall

8480

Males

7230

M50-54

7230

15K→20K

9.3 - 12.4 mi

Top 41%
×5story building
+106ft-86ft

Overall

10980

Males

8570

M50-54

8570

20K→Half

12.4 - 13.1 mi

Top 45%
×2story building
+19ft-37ft

Overall

11981

Males

9058

M50-54

9058

Half→25K

13.1 - 15.5 mi

Top 48%
×4story building
+66ft-88ft

Overall

12795

Males

9254

M50-54

9254

25K→30K

15.5 - 18.6 mi

Top 40%
×9story building
+181ft-148ft

Overall

10748

Males

8221

M50-54

8221

30K→20M

18.6 - 20.0 mi

Top 46%
×5story building
+64ft-50ft

Overall

12114

Males

8751

M50-54

8751

20M→21M

20.0 - 21.0 mi

Top 41%
×8story building
+106ft-24ft

Overall

10955

Males

8100

M50-54

8100

21M→35K

21.0 - 21.8 mi

Top 44%
×7story building
+17ft-86ft

Overall

11588

Males

8380

M50-54

8380

35K→23M

21.8 - 23.0 mi

Top 50%
×5story building
+23ft-63ft

Overall

13332

Males

9055

M50-54

9055

23M→24M

23.0 - 24.0 mi

Top 58%
×6story building
+12ft-82ft

Overall

15523

Males

9948

M50-54

9948

24M→40K

24.0 - 24.9 mi

Top 66%
×1story
+6ft-20ft

Overall

17481

Males

10779

M50-54

10779

40K→25.2M

24.9 - 25.2 mi

Top 68%
×1story
+13ft-16ft

Overall

18042

Males

11025

M50-54

11025

25.2M→Finish

25.2 - 26.2 mi

Top 68%
×2story building
+22ft-21ft

Overall

18000

Males

11060

M50-54

11060

Passing Analysis

Category:
Athletes Passed
822*
Passed By
3703
Net Change
-2882
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#8512
5K → 10K226256-30#8512#8542
10K → 15K151111+40#8542#8502
15K → 20K34585-551#8502#9053
20K → Half1149-148#9053#9201
Half → 25K29602-573#9201#9774
25K → 30K108*254-146#9774#9920
30K → 20M56190-135#9920#10055
20M → 21M75101-26#10055#10081
21M → 35K3284-52#10081#10133
35K → 23M49219-170#10133#10303
23M → 24M18269-251#10303#10554
24M → 40K21331-310#10554#10864
40K → 25.2M8163-155#10864#11019
25.2M → Finish14389-375#11019#11394
TOTALS822*3703-2882

* Includes athletes who did not complete a segment (DNF/DNQ).

📊

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