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BOSTON MARATHON 2023

Will Dong

Bib: 12230•M

CA

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 (M45-49)
#0 / 2252
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
7:34/mi
23:32
↑ 97↓ 3451.5%
10K· 6.21 mi
7:29/mi
46:47
↑ 79↓ 1380.4%
15K· 9.32 mi
7:26/mi
1:09:53
↑ 67↓ 78
20K· 12.43 mi
7:35/mi
1:33:26
↑ 106↓ 860.1%
Half· 13.11 mi
7:37/mi
1:38:38
↑ 19↓ 370.5%
25K· 15.53 mi
7:36/mi
1:57:03
↑ 66↓ 880.2%
30K· 18.64 mi
7:53/mi
2:21:32
↑ 181↓ 1480.2%
20M
8:10/mi
2:32:38
↑ 64↓ 500.2%
21M
9:21/mi
2:41:59
↑ 106↓ 241.6%
35K· 21.75 mi
8:59/mi
2:48:42
↑ 17↓ 861.7%
23M
9:23/mi
3:00:27
↑ 23↓ 630.6%
24M
8:02/mi
3:08:29
↓ 821.3%
40K· 24.85 mi
8:25/mi
3:15:41
↓ 200.3%
25.2M
8:48/mi
3:18:43
↑ 13↓ 160.2%
Finish· 26.22 mi
8:22/mi
3:27:15
↑ 22↓ 21

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:38:38
Pace7:31 /mi
2nd Half
Distance13.11 mi
Time1:48:37
Pace8:17 /mi
📊Positive Split: 10.1% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:51:0823:327:3423:32
7:34
-
10K
6.21 mi11:14:2346:477:3223:15
7:29
-0:05
15K
9.32 mi11:37:291:09:537:3023:06
7:26
-0:03
20K
12.43 mi12:01:021:33:267:3123:33
7:35
+0:09
Half
13.11 mi12:06:141:38:387:315:12
7:37
+0:02
25K
15.53 mi12:24:391:57:037:3218:25
7:36
-0:01
30K
18.64 mi12:49:082:21:327:3624:29
7:53
+0:17
20M
20.00 mi13:00:142:32:387:3811:06
8:10
+0:17
21M
21.00 mi13:09:352:41:597:439:21
9:21
+1:11
35K
21.75 mi13:16:182:48:427:456:43
8:59
-0:22
23M
23.00 mi13:28:033:00:277:5111:45
9:23
+0:24
24M
24.00 mi13:36:053:08:297:518:02
8:02
-1:21
40K
24.85 mi13:43:173:15:417:527:12
8:25
+0:23
25.2M
25.20 mi13:46:193:18:437:533:02
8:48
+0:23
Finish
26.22 mi13:54:513:27:157:558:32
8:22
-0:26

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

7:26 /mi

Average Pace

7:55 /mi

Slowest Pace

9:23 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

1:57:03

56% of race

Time at Steady Pace

43:37

21% of race

Time at Slower Pace

46:35

22% 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 mi10:51:0823:327:3423:32
7:34
#10289
10K
6.21 mi11:14:2346:477:3223:15
7:29
#10297
15K
9.32 mi11:37:291:09:537:3023:06
7:26
#10021
20K
12.43 mi12:01:021:33:267:3123:33
7:35
#9998
Half
13.11 mi12:06:141:38:387:315:12
7:37
#10039
25K
15.53 mi12:24:391:57:037:3218:25
7:36
#9926
30K
18.64 mi12:49:082:21:327:3624:29
7:53
#9919
20M
20.00 mi13:00:142:32:387:3811:06
8:10
#9994
21M
21.00 mi13:09:352:41:597:439:21
9:21
#10333
35K
21.75 mi13:16:182:48:427:456:43
8:59
#10626
23M
23.00 mi13:28:033:00:277:5111:45
9:23
#11169
24M
24.00 mi13:36:053:08:297:518:02
8:02
#11181
40K
24.85 mi13:43:173:15:417:527:12
8:25
#11235
25.2M
25.20 mi13:46:193:18:437:533:02
8:48
#11221
Finish
26.22 mi13:54:513:27:157:558:32
8:22
#11378
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM45-49Seg. OverallSeg. MalesSeg. M45-49
5K3.11 mi3.11 mi10289828782879645(Top 36%)7949(Top 52%)7949(Top 353%)
10K6.21 mi3.10 mi10297-88313-268313-2610314(Top 39%)8338(Top 55%)8338(Top 370%)
15K9.32 mi3.11 mi10021+2768170+1438170+1439645(Top 36%)7949(Top 52%)7949(Top 353%)
20K12.43 mi3.11 mi9998+238152+188152+189943(Top 37%)8042(Top 53%)8042(Top 357%)
Half13.11 mi0.68 mi10039-418174-228174-2211170(Top 42%)8702(Top 57%)8702(Top 386%)
25K15.53 mi2.42 mi9926+1138093+818093+819509(Top 36%)7720(Top 51%)7720(Top 343%)
30K18.64 mi3.11 mi9919+78047+468047+469982(Top 37%)7820(Top 52%)7820(Top 347%)
20M20.00 mi1.36 mi9994-758067-208067-2011450(Top 43%)8462(Top 56%)8462(Top 376%)
21M21.00 mi1.00 mi10333-3398207-1408207-14015226(Top 57%)10019(Top 66%)10019(Top 445%)
35K21.75 mi0.75 mi10626-2938324-1178324-11717778(Top 67%)11034(Top 73%)11034(Top 490%)
23M23.00 mi1.25 mi11169-5438567-2438567-24317851(Top 67%)11045(Top 73%)11045(Top 490%)
24M24.00 mi1.00 mi11181-128550+178550+1711458(Top 43%)8134(Top 54%)8134(Top 361%)
40K24.85 mi0.85 mi11235-548545+58545+512807(Top 48%)8682(Top 57%)8682(Top 386%)
25.2M25.20 mi0.35 mi11221+148526+198526+1911251(Top 42%)7914(Top 52%)7914(Top 351%)
Finish26.22 mi1.02 mi11378-1578581-558581-5514530(Top 55%)9499(Top 63%)9499(Top 422%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 36%
×21story building
+97ft-345ft

Overall

9645

Males

7949

M45-49

7949

5K→10K

3.1 - 6.2 mi

Top 39%
×5story building
+79ft-138ft

Overall

10314

Males

8338

M45-49

8338

10K→15K

6.2 - 9.3 mi

Top 36%
×3story building
+67ft-78ft

Overall

9645

Males

7949

M45-49

7949

15K→20K

9.3 - 12.4 mi

Top 37%
×5story building
+106ft-86ft

Overall

9943

Males

8042

M45-49

8042

20K→Half

12.4 - 13.1 mi

Top 42%
×2story building
+19ft-37ft

Overall

11170

Males

8702

M45-49

8702

Half→25K

13.1 - 15.5 mi

Top 36%
×4story building
+66ft-88ft

Overall

9509

Males

7720

M45-49

7720

25K→30K

15.5 - 18.6 mi

Top 37%
×9story building
+181ft-148ft

Overall

9982

Males

7820

M45-49

7820

30K→20M

18.6 - 20.0 mi

Top 43%
×5story building
+64ft-50ft

Overall

11450

Males

8462

M45-49

8462

20M→21M

20.0 - 21.0 mi

Top 57%
×8story building
+106ft-24ft

Overall

15226

Males

10019

M45-49

10019

21M→35K

21.0 - 21.8 mi

Top 67%
×7story building
+17ft-86ft

Overall

17778

Males

11034

M45-49

11034

35K→23M

21.8 - 23.0 mi

Top 67%
×5story building
+23ft-63ft

Overall

17851

Males

11045

M45-49

11045

23M→24M

23.0 - 24.0 mi

Top 43%
×6story building
+12ft-82ft

Overall

11458

Males

8134

M45-49

8134

24M→40K

24.0 - 24.9 mi

Top 48%
×1story
+6ft-20ft

Overall

12807

Males

8682

M45-49

8682

40K→25.2M

24.9 - 25.2 mi

Top 42%
×1story
+13ft-16ft

Overall

11251

Males

7914

M45-49

7914

25.2M→Finish

25.2 - 26.2 mi

Top 55%
×2story building
+22ft-21ft

Overall

14530

Males

9499

M45-49

9499

Passing Analysis

Category:
Athletes Passed
1480*
Passed By
2566
Net Change
-1089
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#10289
5K → 10K305*313-8#10289#10297
10K → 15K33458+276#10297#10021
15K → 20K193*170+23#10021#9998
20K → Half1151-41#9998#10039
Half → 25K173*60+113#10039#9926
25K → 30K157*150+7#9926#9919
30K → 20M69144-75#9919#9994
20M → 21M25362-339#9994#10333
21M → 35K11304-293#10333#10626
35K → 23M11554-543#10626#11169
23M → 24M7082-12#11169#11181
24M → 40K46100-54#11181#11235
40K → 25.2M4026+14#11235#11221
25.2M → Finish35192-157#11221#11378
TOTALS1480*2566-1089

* 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