Boston Marathon logo
BOSTON MARATHON 2023

Mark Mcwilliams

Bib: 30333•M

CA

0:00
0:00
/ mi
Masters
Be the first to cheer!
Overall
#0 / 26622
Gender (Male)
#0 / 15176
Masters (Masters Men)
#0 / 9891
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
10:37/mi
33:00
↑ 97↓ 3451.5%
10K· 6.21 mi
10:59/mi
1:07:08
↑ 79↓ 1380.4%
15K· 9.32 mi
11:01/mi
1:41:22
↑ 67↓ 78
20K· 12.43 mi
11:21/mi
2:16:37
↑ 106↓ 860.1%
Half· 13.11 mi
11:14/mi
2:24:17
↑ 19↓ 370.5%
25K· 15.53 mi
12:05/mi
2:53:35
↑ 66↓ 880.2%
30K· 18.64 mi
12:11/mi
3:31:26
↑ 181↓ 1480.2%
20M
12:39/mi
3:48:37
↑ 64↓ 500.2%
21M
13:09/mi
4:01:46
↑ 106↓ 241.6%
35K· 21.75 mi
11:51/mi
4:10:38
↑ 17↓ 861.7%
23M
12:05/mi
4:25:46
↑ 23↓ 630.6%
24M
11:52/mi
4:37:38
↓ 821.3%
40K· 24.85 mi
11:53/mi
4:47:48
↓ 200.3%
25.2M
12:05/mi
4:51:58
↑ 13↓ 160.2%
Finish· 26.22 mi
10:11/mi
5:02:21
↑ 22↓ 21

The Course

Is this your race?

Claim it — unlock a deeper AI report on this race, free

A personalized Race Performance Report that goes beyond this page — emailed to you, built from your real splits.

Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time2:24:17
Pace11:00 /mi
2nd Half
Distance13.11 mi
Time2:38:04
Pace12:03 /mi
📊Positive Split: 9.6% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:48:2333:0010:3733:00
10:37
-
10K
6.21 mi12:22:311:07:0810:4834:08
10:59
+0:22
15K
9.32 mi12:56:451:41:2210:5334:14
11:01
+0:02
20K
12.43 mi13:32:002:16:3711:0035:15
11:21
+0:20
Half
13.11 mi13:39:402:24:1711:007:40
11:14
-0:07
25K
15.53 mi14:08:582:53:3511:1029:18
12:05
+0:51
30K
18.64 mi14:46:493:31:2611:2137:51
12:11
+0:06
20M
20.00 mi15:04:003:48:3711:2617:11
12:39
+0:28
21M
21.00 mi15:17:094:01:4611:3113:09
13:09
+0:30
35K
21.75 mi15:26:014:10:3811:318:52
11:51
-1:18
23M
23.00 mi15:41:094:25:4611:3315:08
12:05
+0:14
24M
24.00 mi15:53:014:37:3811:3411:52
11:52
-0:13
40K
24.85 mi16:03:114:47:4811:3510:10
11:53
+0:01
25.2M
25.20 mi16:07:214:51:5811:354:10
12:05
+0:12
Finish
26.22 mi16:17:445:02:2111:3210:23
10:11
-1:54

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

10:11 /mi

Average Pace

11:32 /mi

Slowest Pace

13:09 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

2:34:40

51% of race

Time at Steady Pace

1:57:21

39% of race

Time at Slower Pace

30:20

10% of race

Average Pace: 11:32 /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 mi11:48:2333:0010:3733:00
10:37
#24992
10K
6.21 mi12:22:311:07:0810:4834:08
10:59
#25278
15K
9.32 mi12:56:451:41:2210:5334:14
11:01
#25253
20K
12.43 mi13:32:002:16:3711:0035:15
11:21
#25200
Half
13.11 mi13:39:402:24:1711:007:40
11:14
#25213
25K
15.53 mi14:08:582:53:3511:1029:18
12:05
#25236
30K
18.64 mi14:46:493:31:2611:2137:51
12:11
#25157
20M
20.00 mi15:04:003:48:3711:2617:11
12:39
#25143
21M
21.00 mi15:17:094:01:4611:3113:09
13:09
#25112
35K
21.75 mi15:26:014:10:3811:318:52
11:51
#25094
23M
23.00 mi15:41:094:25:4611:3315:08
12:05
#25055
24M
24.00 mi15:53:014:37:3811:3411:52
11:52
#25049
40K
24.85 mi16:03:114:47:4811:3510:10
11:53
#25010
25.2M
25.20 mi16:07:214:51:5811:354:10
12:05
#24986
Finish
26.22 mi16:17:445:02:2111:3210:23
10:11
#24924
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM45-49Seg. OverallSeg. MalesSeg. M45-49
5K3.11 mi3.11 mi24992145441454425194(Top 95%)14602(Top 96%)14602(Top 648%)
10K6.21 mi3.10 mi25278-28614671-12714671-12725452(Top 96%)14727(Top 97%)14727(Top 654%)
15K9.32 mi3.11 mi25253+2514645+2614645+2625194(Top 95%)14602(Top 96%)14602(Top 648%)
20K12.43 mi3.11 mi25200+5314609+3614609+3625052(Top 94%)14520(Top 96%)14520(Top 645%)
Half13.11 mi0.68 mi25213-1314613-414613-425239(Top 95%)14578(Top 96%)14578(Top 647%)
25K15.53 mi2.42 mi25236-2314607+614607+625225(Top 95%)14562(Top 96%)14562(Top 647%)
30K18.64 mi3.11 mi25157+7914560+4714560+4724695(Top 93%)14276(Top 94%)14276(Top 634%)
20M20.00 mi1.36 mi25143+1414546+1414546+1424869(Top 93%)14316(Top 94%)14316(Top 636%)
21M21.00 mi1.00 mi25112+3114522+2414522+2424257(Top 91%)14008(Top 92%)14008(Top 622%)
35K21.75 mi0.75 mi25094+1814510+1214510+1224526(Top 92%)14093(Top 93%)14093(Top 626%)
23M23.00 mi1.25 mi25055+3914480+3014480+3024120(Top 91%)13904(Top 92%)13904(Top 617%)
24M24.00 mi1.00 mi25049+614477+314477+324356(Top 91%)13979(Top 92%)13979(Top 621%)
40K24.85 mi0.85 mi25010+3914453+2414453+2423754(Top 89%)13674(Top 90%)13674(Top 607%)
25.2M25.20 mi0.35 mi24986+2414437+1614437+1622644(Top 85%)13157(Top 87%)13157(Top 584%)
Finish26.22 mi1.02 mi24924+6214406+3114406+3122267(Top 84%)12988(Top 86%)12988(Top 577%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 95%
×21story building
+97ft-345ft

Overall

25194

Males

14602

M45-49

14602

5K→10K

3.1 - 6.2 mi

Top 96%
×5story building
+79ft-138ft

Overall

25452

Males

14727

M45-49

14727

10K→15K

6.2 - 9.3 mi

Top 95%
×3story building
+67ft-78ft

Overall

25194

Males

14602

M45-49

14602

15K→20K

9.3 - 12.4 mi

Top 94%
×5story building
+106ft-86ft

Overall

25052

Males

14520

M45-49

14520

20K→Half

12.4 - 13.1 mi

Top 95%
×2story building
+19ft-37ft

Overall

25239

Males

14578

M45-49

14578

Half→25K

13.1 - 15.5 mi

Top 95%
×4story building
+66ft-88ft

Overall

25225

Males

14562

M45-49

14562

25K→30K

15.5 - 18.6 mi

Top 93%
×9story building
+181ft-148ft

Overall

24695

Males

14276

M45-49

14276

30K→20M

18.6 - 20.0 mi

Top 93%
×5story building
+64ft-50ft

Overall

24869

Males

14316

M45-49

14316

20M→21M

20.0 - 21.0 mi

Top 91%
×8story building
+106ft-24ft

Overall

24257

Males

14008

M45-49

14008

21M→35K

21.0 - 21.8 mi

Top 92%
×7story building
+17ft-86ft

Overall

24526

Males

14093

M45-49

14093

35K→23M

21.8 - 23.0 mi

Top 91%
×5story building
+23ft-63ft

Overall

24120

Males

13904

M45-49

13904

23M→24M

23.0 - 24.0 mi

Top 91%
×6story building
+12ft-82ft

Overall

24356

Males

13979

M45-49

13979

24M→40K

24.0 - 24.9 mi

Top 89%
×1story
+6ft-20ft

Overall

23754

Males

13674

M45-49

13674

40K→25.2M

24.9 - 25.2 mi

Top 85%
×1story
+13ft-16ft

Overall

22644

Males

13157

M45-49

13157

25.2M→Finish

25.2 - 26.2 mi

Top 84%
×2story building
+22ft-21ft

Overall

22267

Males

12988

M45-49

12988

Passing Analysis

Category:
Athletes Passed
861
Passed By
793
Net Change
+68
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#24992
5K → 10K90376-286#24992#25278
10K → 15K12297+25#25278#25253
15K → 20K11360+53#25253#25200
20K → Half2134-13#25200#25213
Half → 25K6285-23#25213#25236
25K → 30K11738+79#25236#25157
30K → 20M4834+14#25157#25143
20M → 21M5120+31#25143#25112
21M → 35K224+18#25112#25094
35K → 23M5314+39#25094#25055
23M → 24M2317+6#25055#25049
24M → 40K5011+39#25049#25010
40K → 25.2M251+24#25010#24986
25.2M → Finish642+62#24986#24924
TOTALS861793+68
📊

Passing Visuals

Category:
Loading...

🔄Passing Circle

Loading...

🌊Position Flow

Loading...

🏃Race Lanes

Loading...

Upload your GPX file

Supports Garmin, Apple Watch, Polar, Suunto, COROS, Strava, and other apps

.gpx files up to 10MB

Export Track Data

Download your race performance as a GPX or TCX file to import into Strava, Garmin Connect, or other fitness apps.

Questions or issues regarding timing data?

If you notice any discrepancies in your timing data or have questions about your results, our support team can help.

Contact Race Support

Public Race Data

Boston Athletic Association

Boston Athletic Association

Mika Timing

Mika Timing