Boston Marathon logo
BOSTON MARATHON 2023

David Greene

Bib: 21701•M

IN

0:00
0:00
/ mi
Masters
Be the first to cheer!
Overall
#0 / 26622
Gender (Male)
#0 / 15176
Masters (Masters Men)
#0 / 9891
Division (M60-64)
#0 / 1110
Top 35%
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
8:12/mi
25:30
↑ 97↓ 3451.5%
10K· 6.21 mi
8:19/mi
51:19
↑ 79↓ 1380.4%
15K· 9.32 mi
8:22/mi
1:17:18
↑ 67↓ 78
20K· 12.43 mi
8:25/mi
1:43:27
↑ 106↓ 860.1%
Half· 13.11 mi
7:59/mi
1:48:54
↑ 19↓ 370.5%
25K· 15.53 mi
8:21/mi
2:09:09
↑ 66↓ 880.2%
30K· 18.64 mi
8:51/mi
2:36:38
↑ 181↓ 1480.2%
20M
8:53/mi
2:48:42
↑ 64↓ 500.2%
21M
9:28/mi
2:58:10
↑ 106↓ 241.6%
35K· 21.75 mi
8:45/mi
3:04:43
↑ 17↓ 861.7%
23M
8:42/mi
3:15:37
↑ 23↓ 630.6%
24M
8:30/mi
3:24:07
↓ 821.3%
40K· 24.85 mi
8:19/mi
3:31:14
↓ 200.3%
25.2M
9:02/mi
3:34:21
↑ 13↓ 160.2%
Finish· 26.22 mi
8:20/mi
3:42:51
↑ 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
Time1:48:54
Pace8:18 /mi
2nd Half
Distance13.11 mi
Time1:53:57
Pace8:42 /mi
📊Positive Split: 4.6% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:18:4925:308:1225:30
8:12
-
10K
6.21 mi11:44:3851:198:1625:49
8:19
+0:07
15K
9.32 mi12:10:371:17:188:1825:59
8:22
+0:03
20K
12.43 mi12:36:461:43:278:1926:09
8:25
+0:03
Half
13.11 mi12:42:131:48:548:185:27
7:59
-0:26
25K
15.53 mi13:02:282:09:098:1920:15
8:21
+0:22
30K
18.64 mi13:29:572:36:388:2427:29
8:51
+0:30
20M
20.00 mi13:42:012:48:428:2612:04
8:53
+0:02
21M
21.00 mi13:51:292:58:108:299:28
9:28
+0:35
35K
21.75 mi13:58:023:04:438:306:33
8:45
-0:43
23M
23.00 mi14:08:563:15:378:3010:54
8:42
-0:03
24M
24.00 mi14:17:263:24:078:308:30
8:30
-0:12
40K
24.85 mi14:24:333:31:148:307:07
8:19
-0:11
25.2M
25.20 mi14:27:403:34:218:303:07
9:02
+0:43
Finish
26.22 mi14:36:103:42:518:308:30
8:20
-0:42

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

7:59 /mi

Average Pace

8:30 /mi

Slowest Pace

9:28 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

2:50:43

77% of race

Time at Steady Pace

42:40

19% of race

Time at Slower Pace

9:28

4% of race

Average Pace: 8:30 /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 mi11:18:4925:308:1225:30
8:12
#15514
10K
6.21 mi11:44:3851:198:1625:49
8:19
#16221
15K
9.32 mi12:10:371:17:188:1825:59
8:22
#16468
20K
12.43 mi12:36:461:43:278:1926:09
8:25
#16456
Half
13.11 mi12:42:131:48:548:185:27
7:59
#16347
25K
15.53 mi13:02:282:09:098:1920:15
8:21
#16128
30K
18.64 mi13:29:572:36:388:2427:29
8:51
#16168
20M
20.00 mi13:42:012:48:428:2612:04
8:53
#16130
21M
21.00 mi13:51:292:58:108:299:28
9:28
#16079
35K
21.75 mi13:58:023:04:438:306:33
8:45
#16090
23M
23.00 mi14:08:563:15:378:3010:54
8:42
#15987
24M
24.00 mi14:17:263:24:078:308:30
8:30
#15905
40K
24.85 mi14:24:333:31:148:307:07
8:19
#15766
25.2M
25.20 mi14:27:403:34:218:303:07
9:02
#15711
Finish
26.22 mi14:36:103:42:518:308:30
8:20
#15655
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM60-64Seg. OverallSeg. MalesSeg. M60-64
5K3.11 mi3.11 mi15514105191051916920(Top 64%)11041(Top 73%)11041(Top 995%)
10K6.21 mi3.10 mi16221-70710794-27510794-27516984(Top 64%)11098(Top 73%)11098(Top 1000%)
15K9.32 mi3.11 mi16468-24710878-8410878-8416920(Top 64%)11041(Top 73%)11041(Top 995%)
20K12.43 mi3.11 mi16456+1210858+2010858+2016337(Top 61%)10766(Top 71%)10766(Top 970%)
Half13.11 mi0.68 mi16347+10910805+5310805+5314248(Top 54%)10020(Top 66%)10020(Top 903%)
25K15.53 mi2.42 mi16128+21910694+11110694+11115258(Top 57%)10248(Top 68%)10248(Top 923%)
30K18.64 mi3.11 mi16168-4010663+3110663+3116340(Top 61%)10625(Top 70%)10625(Top 957%)
20M20.00 mi1.36 mi16130+3810638+2510638+2515874(Top 60%)10357(Top 68%)10357(Top 933%)
21M21.00 mi1.00 mi16079+5110598+4010598+4015785(Top 59%)10259(Top 68%)10259(Top 924%)
35K21.75 mi0.75 mi16090-1110580+1810580+1816673(Top 63%)10559(Top 70%)10559(Top 951%)
23M23.00 mi1.25 mi15987+10310518+6210518+6214405(Top 54%)9537(Top 63%)9537(Top 859%)
24M24.00 mi1.00 mi15905+8210468+5010468+5014458(Top 54%)9511(Top 63%)9511(Top 857%)
40K24.85 mi0.85 mi15766+13910403+6510403+6512213(Top 46%)8423(Top 56%)8423(Top 759%)
25.2M25.20 mi0.35 mi15711+5510382+2110382+2112717(Top 48%)8630(Top 57%)8630(Top 777%)
Finish26.22 mi1.02 mi15655+5610350+3210350+3214334(Top 54%)9406(Top 62%)9406(Top 847%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 64%
×21story building
+97ft-345ft

Overall

16920

Males

11041

M60-64

11041

5K→10K

3.1 - 6.2 mi

Top 64%
×5story building
+79ft-138ft

Overall

16984

Males

11098

M60-64

11098

10K→15K

6.2 - 9.3 mi

Top 64%
×3story building
+67ft-78ft

Overall

16920

Males

11041

M60-64

11041

15K→20K

9.3 - 12.4 mi

Top 61%
×5story building
+106ft-86ft

Overall

16337

Males

10766

M60-64

10766

20K→Half

12.4 - 13.1 mi

Top 54%
×2story building
+19ft-37ft

Overall

14248

Males

10020

M60-64

10020

Half→25K

13.1 - 15.5 mi

Top 57%
×4story building
+66ft-88ft

Overall

15258

Males

10248

M60-64

10248

25K→30K

15.5 - 18.6 mi

Top 61%
×9story building
+181ft-148ft

Overall

16340

Males

10625

M60-64

10625

30K→20M

18.6 - 20.0 mi

Top 60%
×5story building
+64ft-50ft

Overall

15874

Males

10357

M60-64

10357

20M→21M

20.0 - 21.0 mi

Top 59%
×8story building
+106ft-24ft

Overall

15785

Males

10259

M60-64

10259

21M→35K

21.0 - 21.8 mi

Top 63%
×7story building
+17ft-86ft

Overall

16673

Males

10559

M60-64

10559

35K→23M

21.8 - 23.0 mi

Top 54%
×5story building
+23ft-63ft

Overall

14405

Males

9537

M60-64

9537

23M→24M

23.0 - 24.0 mi

Top 54%
×6story building
+12ft-82ft

Overall

14458

Males

9511

M60-64

9511

24M→40K

24.0 - 24.9 mi

Top 46%
×1story
+6ft-20ft

Overall

12213

Males

8423

M60-64

8423

40K→25.2M

24.9 - 25.2 mi

Top 48%
×1story
+13ft-16ft

Overall

12717

Males

8630

M60-64

8630

25.2M→Finish

25.2 - 26.2 mi

Top 54%
×2story building
+22ft-21ft

Overall

14334

Males

9406

M60-64

9406

Passing Analysis

Category:
Athletes Passed
1708
Passed By
1849
Net Change
-141
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#15514
5K → 10K89796-707#15514#16221
10K → 15K106353-247#16221#16468
15K → 20K169157+12#16468#16456
20K → Half1145+109#16456#16347
Half → 25K26748+219#16347#16128
25K → 30K170210-40#16128#16168
30K → 20M9759+38#16168#16130
20M → 21M9746+51#16130#16079
21M → 35K5465-11#16079#16090
35K → 23M13936+103#16090#15987
23M → 24M11230+82#15987#15905
24M → 40K1489+139#15905#15766
40K → 25.2M616+55#15766#15711
25.2M → Finish8529+56#15711#15655
TOTALS17081849-141
📊

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