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BOSTON MARATHON 2023

Thomas Belk

Bib: 30793•M

0:00
0:00
/ mi
Masters
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Overall
#0 / 26622
Gender (Male)
#0 / 15176
Masters (Masters Men)
#0 / 9891
Division (M60-64)
#0 / 1110
Race Day Weather
49°/39°F
light intensity drizzle

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
31:51
Rank: #24094
Start → 5K
10:15/mi
31:51 split
10K· 6.21 mi
1:06:19
Rank: #25043 (-949)
5K → 10K
11:06/mi
34:28 split
15K· 9.32 mi
1:44:27
Rank: #25705 (-662)
10K → 15K
12:16/mi
38:08 split
20K· 12.43 mi
2:24:57
Rank: #25930 (-225)
15K → 20K
13:02/mi
40:30 split
Half· 13.11 mi
2:33:15
Rank: #25931 (-1)
20K → Half
12:10/mi
8:18 split
25K· 15.53 mi
3:06:54
Rank: #26035 (-104)
Half → 25K
13:53/mi
33:39 split
30K· 18.64 mi
3:54:16
Rank: #26171 (-136)
25K → 30K
15:15/mi
47:22 split
20M
4:20:25
Rank: #26346 (-175)
30K → 20M
19:15/mi
26:09 split
21M
4:38:34
Rank: #26406 (-60)
20M → 21M
18:09/mi
18:09 split
35K· 21.75 mi
4:49:42
Rank: #26412 (-6)
21M → 35K
14:53/mi
11:08 split
23M
5:07:42
Rank: #26414 (-2)
35K → 23M
14:23/mi
18:00 split
24M
5:22:03
Rank: #26416 (-2)
23M → 24M
14:21/mi
14:21 split
40K· 24.85 mi
5:35:48
Rank: #26436 (-20)
24M → 40K
16:05/mi
13:45 split
25.2M
5:41:47
Rank: #26445 (-9)
40K → 25.2M
17:21/mi
5:59 split
Finish· 26.22 mi
5:56:05
Rank: #26458 (-13)
25.2M → Finish
14:02/mi
14:18 split

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time2:33:15
Pace11:41 /mi
2nd Half
Distance13.11 mi
Time3:22:50
Pace15:28 /mi
📊Positive Split: 32.4% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:50:4731:5110:1531:51
10:15
-
10K
6.21 mi12:25:151:06:1910:4034:28
11:06
+0:51
15K
9.32 mi13:03:231:44:2711:1238:08
12:16
+1:10
20K
12.43 mi13:43:532:24:5711:4040:30
13:02
+0:46
Half
13.11 mi13:52:112:33:1511:418:18
12:10
-0:52
25K
15.53 mi14:25:503:06:5412:0233:39
13:53
+1:43
30K
18.64 mi15:13:123:54:1612:3447:22
15:15
+1:22
20M
20.00 mi15:39:214:20:2513:0126:09
19:15
+4:00
21M
21.00 mi15:57:304:38:3413:1618:09
18:09
-1:06
35K
21.75 mi16:08:384:49:4213:1911:08
14:53
-3:16
23M
23.00 mi16:26:385:07:4213:2318:00
14:23
-0:30
24M
24.00 mi16:40:595:22:0313:2514:21
14:21
-0:02
40K
24.85 mi16:54:445:35:4813:3113:45
16:05
+1:44
25.2M
25.20 mi17:00:435:41:4713:345:59
17:21
+1:16
Finish
26.22 mi17:15:015:56:0513:3514:18
14:02
-3:19

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

10:15 /mi

Average Pace

13:35 /mi

Slowest Pace

19:15 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

2:33:15

43% of race

Time at Steady Pace

2:18:48

39% of race

Time at Slower Pace

1:04:02

18% of race

Average Pace: 13:35 /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 mi11:50:4731:5110:1531:51
10:15
#24094
10K
6.21 mi12:25:151:06:1910:4034:28
11:06
#25043
15K
9.32 mi13:03:231:44:2711:1238:08
12:16
#25705
20K
12.43 mi13:43:532:24:5711:4040:30
13:02
#25930
Half
13.11 mi13:52:112:33:1511:418:18
12:10
#25931
25K
15.53 mi14:25:503:06:5412:0233:39
13:53
#26035
30K
18.64 mi15:13:123:54:1612:3447:22
15:15
#26171
20M
20.00 mi15:39:214:20:2513:0126:09
19:15
#26346
21M
21.00 mi15:57:304:38:3413:1618:09
18:09
#26406
35K
21.75 mi16:08:384:49:4213:1911:08
14:53
#26412
23M
23.00 mi16:26:385:07:4213:2318:00
14:23
#26414
24M
24.00 mi16:40:595:22:0313:2514:21
14:21
#26416
40K
24.85 mi16:54:445:35:4813:3113:45
16:05
#26436
25.2M
25.20 mi17:00:435:41:4713:345:59
17:21
#26445
Finish
26.22 mi17:15:015:56:0513:3514:18
14:02
#26458
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM60-64Seg. OverallSeg. MalesSeg. M60-64
5K3.11 mi3.11 mi24094141371413726219(Top 98%)15020(Top 99%)15020(Top 1353%)
10K6.21 mi3.10 mi25043-94914563-42614563-42625558(Top 96%)14764(Top 97%)14764(Top 1330%)
15K9.32 mi3.11 mi25705-66214826-26314826-26326219(Top 98%)15020(Top 99%)15020(Top 1353%)
20K12.43 mi3.11 mi25930-22514917-9114917-9126244(Top 99%)15025(Top 99%)15025(Top 1354%)
Half13.11 mi0.68 mi25931-114915+214915+225977(Top 98%)14909(Top 98%)14909(Top 1343%)
25K15.53 mi2.42 mi26035-10414946-3114946-3126291(Top 99%)15031(Top 99%)15031(Top 1354%)
30K18.64 mi3.11 mi26171-13614991-4514991-4526482(Top 99%)15109(Top 100%)15109(Top 1361%)
20M20.00 mi1.36 mi26346-17515065-7415065-7426603(Top 100%)15163(Top 100%)15163(Top 1366%)
21M21.00 mi1.00 mi26406-6015087-2215087-2226558(Top 100%)15144(Top 100%)15144(Top 1364%)
35K21.75 mi0.75 mi26412-6150871508726388(Top 99%)15043(Top 99%)15043(Top 1355%)
23M23.00 mi1.25 mi26414-215088-115088-126057(Top 98%)14872(Top 98%)14872(Top 1340%)
24M24.00 mi1.00 mi26416-215087+115087+126202(Top 98%)14927(Top 98%)14927(Top 1345%)
40K24.85 mi0.85 mi26436-2015095-815095-826423(Top 99%)15055(Top 99%)15055(Top 1356%)
25.2M25.20 mi0.35 mi26445-915096-115096-126422(Top 99%)15050(Top 99%)15050(Top 1356%)
Finish26.22 mi1.02 mi26458-1315101-515101-526361(Top 99%)15004(Top 99%)15004(Top 1352%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 98%
×21story building
+97ft-345ft

Overall

26219

Males

15020

M60-64

15020

5K→10K

3.1 - 6.2 mi

Top 96%
×5story building
+79ft-138ft

Overall

25558

Males

14764

M60-64

14764

10K→15K

6.2 - 9.3 mi

Top 98%
×3story building
+67ft-78ft

Overall

26219

Males

15020

M60-64

15020

15K→20K

9.3 - 12.4 mi

Top 99%
×5story building
+106ft-86ft

Overall

26244

Males

15025

M60-64

15025

20K→Half

12.4 - 13.1 mi

Top 98%
×2story building
+19ft-37ft

Overall

25977

Males

14909

M60-64

14909

Half→25K

13.1 - 15.5 mi

Top 99%
×4story building
+66ft-88ft

Overall

26291

Males

15031

M60-64

15031

25K→30K

15.5 - 18.6 mi

Top 99%
×9story building
+181ft-148ft

Overall

26482

Males

15109

M60-64

15109

30K→20M

18.6 - 20.0 mi

Top 100%
×5story building
+64ft-50ft

Overall

26603

Males

15163

M60-64

15163

20M→21M

20.0 - 21.0 mi

Top 100%
×8story building
+106ft-24ft

Overall

26558

Males

15144

M60-64

15144

21M→35K

21.0 - 21.8 mi

Top 99%
×7story building
+17ft-86ft

Overall

26388

Males

15043

M60-64

15043

35K→23M

21.8 - 23.0 mi

Top 98%
×5story building
+23ft-63ft

Overall

26057

Males

14872

M60-64

14872

23M→24M

23.0 - 24.0 mi

Top 98%
×6story building
+12ft-82ft

Overall

26202

Males

14927

M60-64

14927

24M→40K

24.0 - 24.9 mi

Top 99%
×1story
+6ft-20ft

Overall

26423

Males

15055

M60-64

15055

40K→25.2M

24.9 - 25.2 mi

Top 99%
×1story
+13ft-16ft

Overall

26422

Males

15050

M60-64

15050

25.2M→Finish

25.2 - 26.2 mi

Top 99%
×2story building
+22ft-21ft

Overall

26361

Males

15004

M60-64

15004

Passing Analysis

Category:
Athletes Passed
99
Passed By
2463
Net Change
-2364
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#24094
5K → 10K13962-949#24094#25043
10K → 15K4666-662#25043#25705
15K → 20K9234-225#25705#25930
20K → Half1112-1#25930#25931
Half → 25K13117-104#25931#26035
25K → 30K10146-136#26035#26171
30K → 20M1176-175#26171#26346
20M → 21M161-60#26346#26406
21M → 35K713-6#26406#26412
35K → 23M1315-2#26412#26414
23M → 24M810-2#26414#26416
24M → 40K525-20#26416#26436
40K → 25.2M211-9#26436#26445
25.2M → Finish215-13#26445#26458
TOTALS992463-2364
📊

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