Boston Marathon logo
BOSTON MARATHON 2023

Adam Macdonald

Bib: 1943•M

ON

0:00
0:00
/ mi
Masters
Be the first to cheer!
Overall
#0 / 26622
Top 8%
Gender (Male)
#0 / 15176
Top 13%
Masters (Masters Men)
#0 / 9891
Top 4%
Division (M40-44)
#0 / 2241
Top 12%
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
6:29/mi
20:09
↑ 97↓ 3451.5%
10K· 6.21 mi
6:28/mi
40:13
↑ 79↓ 1380.4%
15K· 9.32 mi
6:30/mi
1:00:26
↑ 67↓ 78
20K· 12.43 mi
6:33/mi
1:20:47
↑ 106↓ 860.1%
Half· 13.11 mi
6:28/mi
1:25:12
↑ 19↓ 370.5%
25K· 15.53 mi
6:35/mi
1:41:09
↑ 66↓ 880.2%
30K· 18.64 mi
6:38/mi
2:01:44
↑ 181↓ 1480.2%
20M
6:37/mi
2:10:44
↑ 64↓ 500.2%
21M
6:56/mi
2:17:40
↑ 106↓ 241.6%
35K· 21.75 mi
6:24/mi
2:22:27
↑ 17↓ 861.7%
23M
6:39/mi
2:30:47
↑ 23↓ 630.6%
24M
6:25/mi
2:37:12
↓ 821.3%
40K· 24.85 mi
6:29/mi
2:42:45
↓ 200.3%
25.2M
7:00/mi
2:45:10
↑ 13↓ 160.2%
Finish· 26.22 mi
6:16/mi
2:51:33
↑ 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
Time1:25:12
Pace6:30 /mi
2nd Half
Distance13.11 mi
Time1:26:21
Pace6:35 /mi
📊Positive Split: 1.3% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:20:4920:096:2920:09
6:29
-
10K
6.21 mi10:40:5340:136:2820:04
6:28
-0:01
15K
9.32 mi11:01:061:00:266:2920:13
6:30
+0:02
20K
12.43 mi11:21:271:20:476:3020:21
6:33
+0:03
Half
13.11 mi11:25:521:25:126:304:25
6:28
-0:05
25K
15.53 mi11:41:491:41:096:3115:57
6:35
+0:07
30K
18.64 mi12:02:242:01:446:3220:35
6:38
+0:03
20M
20.00 mi12:11:242:10:446:329:00
6:37
-0:01
21M
21.00 mi12:18:202:17:406:336:56
6:56
+0:19
35K
21.75 mi12:23:072:22:276:334:47
6:24
-0:32
23M
23.00 mi12:31:272:30:476:338:20
6:39
+0:15
24M
24.00 mi12:37:522:37:126:336:25
6:25
-0:14
40K
24.85 mi12:43:252:42:456:335:33
6:29
+0:04
25.2M
25.20 mi12:45:502:45:106:332:25
7:00
+0:31
Finish
26.22 mi12:52:132:51:336:336:23
6:16
-0:44

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

6:16 /mi

Average Pace

6:33 /mi

Slowest Pace

7:00 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

2:42:12

95% of race

Time at Steady Pace

9:21

5% of race

Time at Slower Pace

0:00

0% of race

Average Pace: 6:33 /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 mi10:20:4920:096:2920:09
6:29
#2200
10K
6.21 mi10:40:5340:136:2820:04
6:28
#2338
15K
9.32 mi11:01:061:00:266:2920:13
6:30
#2455
20K
12.43 mi11:21:271:20:476:3020:21
6:33
#2450
Half
13.11 mi11:25:521:25:126:304:25
6:28
#2454
25K
15.53 mi11:41:491:41:096:3115:57
6:35
#2473
30K
18.64 mi12:02:242:01:446:3220:35
6:38
#2380
20M
20.00 mi12:11:242:10:446:329:00
6:37
#2324
21M
21.00 mi12:18:202:17:406:336:56
6:56
#2277
35K
21.75 mi12:23:072:22:276:334:47
6:24
#2251
23M
23.00 mi12:31:272:30:476:338:20
6:39
#2209
24M
24.00 mi12:37:522:37:126:336:25
6:25
#2165
40K
24.85 mi12:43:252:42:456:335:33
6:29
#2119
25.2M
25.20 mi12:45:502:45:106:332:25
7:00
#2095
Finish
26.22 mi12:52:132:51:336:336:23
6:16
#2027
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM40-44Seg. OverallSeg. MalesSeg. M40-44
5K3.11 mi3.11 mi2200209920992670(Top 10%)2551(Top 17%)2551(Top 114%)
10K6.21 mi3.10 mi2338-1382232-1332232-1332544(Top 10%)2431(Top 16%)2431(Top 108%)
15K9.32 mi3.11 mi2455-1172346-1142346-1142670(Top 10%)2551(Top 17%)2551(Top 114%)
20K12.43 mi3.11 mi2450+52347-12347-12556(Top 10%)2445(Top 16%)2445(Top 109%)
Half13.11 mi0.68 mi2454-42351-42351-42570(Top 10%)2464(Top 16%)2464(Top 110%)
25K15.53 mi2.42 mi2473-192369-182369-182566(Top 10%)2455(Top 16%)2455(Top 110%)
30K18.64 mi3.11 mi2380+932281+882281+882064(Top 8%)1971(Top 13%)1971(Top 88%)
20M20.00 mi1.36 mi2324+562231+502231+501955(Top 7%)1865(Top 12%)1865(Top 83%)
21M21.00 mi1.00 mi2277+472182+492182+491884(Top 7%)1790(Top 12%)1790(Top 80%)
35K21.75 mi0.75 mi2251+262157+252157+251949(Top 7%)1853(Top 12%)1853(Top 83%)
23M23.00 mi1.25 mi2209+422117+402117+401982(Top 7%)1877(Top 12%)1877(Top 84%)
24M24.00 mi1.00 mi2165+442077+402077+401739(Top 7%)1640(Top 11%)1640(Top 73%)
40K24.85 mi0.85 mi2119+462033+442033+441503(Top 6%)1417(Top 9%)1417(Top 63%)
25.2M25.20 mi0.35 mi2095+242009+242009+241761(Top 7%)1654(Top 11%)1654(Top 74%)
Finish26.22 mi1.02 mi2027+681943+661943+661492(Top 6%)1411(Top 9%)1411(Top 63%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 10%
×21story building
+97ft-345ft

Overall

2670

Males

2551

M40-44

2551

5K→10K

3.1 - 6.2 mi

Top 10%
×5story building
+79ft-138ft

Overall

2544

Males

2431

M40-44

2431

10K→15K

6.2 - 9.3 mi

Top 10%
×3story building
+67ft-78ft

Overall

2670

Males

2551

M40-44

2551

15K→20K

9.3 - 12.4 mi

Top 10%
×5story building
+106ft-86ft

Overall

2556

Males

2445

M40-44

2445

20K→Half

12.4 - 13.1 mi

Top 10%
×2story building
+19ft-37ft

Overall

2570

Males

2464

M40-44

2464

Half→25K

13.1 - 15.5 mi

Top 10%
×4story building
+66ft-88ft

Overall

2566

Males

2455

M40-44

2455

25K→30K

15.5 - 18.6 mi

Top 8%
×9story building
+181ft-148ft

Overall

2064

Males

1971

M40-44

1971

30K→20M

18.6 - 20.0 mi

Top 7%
×5story building
+64ft-50ft

Overall

1955

Males

1865

M40-44

1865

20M→21M

20.0 - 21.0 mi

Top 7%
×8story building
+106ft-24ft

Overall

1884

Males

1790

M40-44

1790

21M→35K

21.0 - 21.8 mi

Top 7%
×7story building
+17ft-86ft

Overall

1949

Males

1853

M40-44

1853

35K→23M

21.8 - 23.0 mi

Top 7%
×5story building
+23ft-63ft

Overall

1982

Males

1877

M40-44

1877

23M→24M

23.0 - 24.0 mi

Top 7%
×6story building
+12ft-82ft

Overall

1739

Males

1640

M40-44

1640

24M→40K

24.0 - 24.9 mi

Top 6%
×1story
+6ft-20ft

Overall

1503

Males

1417

M40-44

1417

40K→25.2M

24.9 - 25.2 mi

Top 7%
×1story
+13ft-16ft

Overall

1761

Males

1654

M40-44

1654

25.2M→Finish

25.2 - 26.2 mi

Top 6%
×2story building
+22ft-21ft

Overall

1492

Males

1411

M40-44

1411

Passing Analysis

Category:
Athletes Passed
755
Passed By
582
Net Change
+173
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#2200
5K → 10K63201-138#2200#2338
10K → 15K39156-117#2338#2455
15K → 20K6459+5#2455#2450
20K → Half913-4#2450#2454
Half → 25K4261-19#2454#2473
25K → 30K11825+93#2473#2380
30K → 20M6812+56#2380#2324
20M → 21M5710+47#2324#2277
21M → 35K348+26#2277#2251
35K → 23M519+42#2251#2209
23M → 24M517+44#2209#2165
24M → 40K559+46#2165#2119
40K → 25.2M262+24#2119#2095
25.2M → Finish7810+68#2095#2027
TOTALS755582+173
📊

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