Boston Marathon logo
BOSTON MARATHON 2023

Ivan Lee

Bib: 14216•M

CA

0:00
0:00
/ mi
Masters
Be the first to cheer!
Overall
#0 / 26622
Top 44%
Gender (Male)
#0 / 15176
Masters (Masters Men)
#0 / 9891
Top 48%
Division (M60-64)
#0 / 1110
Top 14%
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
7:47/mi
24:11
↑ 97↓ 3451.5%
10K· 6.21 mi
7:46/mi
48:19
↑ 79↓ 1380.4%
15K· 9.32 mi
7:51/mi
1:12:42
↑ 67↓ 78
20K· 12.43 mi
8:06/mi
1:37:53
↑ 106↓ 860.1%
Half· 13.11 mi
7:45/mi
1:43:10
↑ 19↓ 370.5%
25K· 15.53 mi
7:47/mi
2:02:03
↑ 66↓ 880.2%
30K· 18.64 mi
8:12/mi
2:27:33
↑ 181↓ 1480.2%
20M
8:09/mi
2:38:38
↑ 64↓ 500.2%
21M
8:44/mi
2:47:22
↑ 106↓ 241.6%
35K· 21.75 mi
7:44/mi
2:53:09
↑ 17↓ 861.7%
23M
7:49/mi
3:02:56
↑ 23↓ 630.6%
24M
7:29/mi
3:10:25
↓ 821.3%
40K· 24.85 mi
7:47/mi
3:17:04
↓ 200.3%
25.2M
8:33/mi
3:20:01
↑ 13↓ 160.2%
Finish· 26.22 mi
7:58/mi
3:28:08
↑ 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
Time1:43:10
Pace7:52 /mi
2nd Half
Distance13.11 mi
Time1:44:58
Pace8:00 /mi
📊Positive Split: 1.7% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:53:2124:117:4724:11
7:47
-
10K
6.21 mi11:17:2948:197:4724:08
7:46
-0:01
15K
9.32 mi11:41:521:12:427:4824:23
7:51
+0:05
20K
12.43 mi12:07:031:37:537:5325:11
8:06
+0:15
Half
13.11 mi12:12:201:43:107:525:17
7:45
-0:21
25K
15.53 mi12:31:132:02:037:5118:53
7:47
+0:02
30K
18.64 mi12:56:432:27:337:5525:30
8:12
+0:25
20M
20.00 mi13:07:482:38:387:5611:05
8:09
-0:03
21M
21.00 mi13:16:322:47:227:588:44
8:44
+0:35
35K
21.75 mi13:22:192:53:097:585:47
7:44
-1:00
23M
23.00 mi13:32:063:02:567:579:47
7:49
+0:05
24M
24.00 mi13:39:353:10:257:567:29
7:29
-0:20
40K
24.85 mi13:46:143:17:047:566:39
7:47
+0:18
25.2M
25.20 mi13:49:113:20:017:562:57
8:33
+0:46
Finish
26.22 mi13:57:183:28:087:578:07
7:58
-0:35

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

7:29 /mi

Average Pace

7:57 /mi

Slowest Pace

8:44 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

3:16:27

94% of race

Time at Steady Pace

11:41

6% of race

Time at Slower Pace

0:00

0% of race

Average Pace: 7:56 /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 mi10:53:2124:117:4724:11
7:47
#12190
10K
6.21 mi11:17:2948:197:4724:08
7:46
#12492
15K
9.32 mi11:41:521:12:427:4824:23
7:51
#12679
20K
12.43 mi12:07:031:37:537:5325:11
8:06
#13086
Half
13.11 mi12:12:201:43:107:525:17
7:45
#13032
25K
15.53 mi12:31:132:02:037:5118:53
7:47
#12655
30K
18.64 mi12:56:432:27:337:5525:30
8:12
#12591
20M
20.00 mi13:07:482:38:387:5611:05
8:09
#12474
21M
21.00 mi13:16:322:47:227:588:44
8:44
#12401
35K
21.75 mi13:22:192:53:097:585:47
7:44
#12323
23M
23.00 mi13:32:063:02:567:579:47
7:49
#12072
24M
24.00 mi13:39:353:10:257:567:29
7:29
#11863
40K
24.85 mi13:46:143:17:047:566:39
7:47
#11718
25.2M
25.20 mi13:49:113:20:017:562:57
8:33
#11673
Finish
26.22 mi13:57:183:28:087:578:07
7:58
#11668
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM60-64Seg. OverallSeg. MalesSeg. M60-64
5K3.11 mi3.11 mi121909199919913097(Top 49%)9543(Top 63%)9543(Top 860%)
10K6.21 mi3.10 mi12492-3029321-1229321-12212827(Top 48%)9477(Top 62%)9477(Top 854%)
15K9.32 mi3.11 mi12679-1879389-689389-6813097(Top 49%)9543(Top 63%)9543(Top 860%)
20K12.43 mi3.11 mi13086-4079535-1469535-14614244(Top 54%)9972(Top 66%)9972(Top 898%)
Half13.11 mi0.68 mi13032+549510+259510+2512189(Top 46%)9143(Top 60%)9143(Top 824%)
25K15.53 mi2.42 mi12655+3779331+1799331+17910998(Top 41%)8504(Top 56%)8504(Top 766%)
30K18.64 mi3.11 mi12591+649258+739258+7312384(Top 47%)8964(Top 59%)8964(Top 808%)
20M20.00 mi1.36 mi12474+1179201+579201+5711382(Top 43%)8444(Top 56%)8444(Top 761%)
21M21.00 mi1.00 mi12401+739152+499152+4911849(Top 45%)8510(Top 56%)8510(Top 767%)
35K21.75 mi0.75 mi12323+789097+559097+5510146(Top 38%)7706(Top 51%)7706(Top 694%)
23M23.00 mi1.25 mi12072+2518958+1398958+1398514(Top 32%)6715(Top 44%)6715(Top 605%)
24M24.00 mi1.00 mi11863+2098857+1018857+1017607(Top 29%)6086(Top 40%)6086(Top 548%)
40K24.85 mi0.85 mi11718+1458770+878770+878529(Top 32%)6581(Top 43%)6581(Top 593%)
25.2M25.20 mi0.35 mi11673+458742+288742+289843(Top 37%)7229(Top 48%)7229(Top 651%)
Finish26.22 mi1.02 mi11668+58711+318711+3111836(Top 44%)8198(Top 54%)8198(Top 739%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 49%
×21story building
+97ft-345ft

Overall

13097

Males

9543

M60-64

9543

5K→10K

3.1 - 6.2 mi

Top 48%
×5story building
+79ft-138ft

Overall

12827

Males

9477

M60-64

9477

10K→15K

6.2 - 9.3 mi

Top 49%
×3story building
+67ft-78ft

Overall

13097

Males

9543

M60-64

9543

15K→20K

9.3 - 12.4 mi

Top 54%
×5story building
+106ft-86ft

Overall

14244

Males

9972

M60-64

9972

20K→Half

12.4 - 13.1 mi

Top 46%
×2story building
+19ft-37ft

Overall

12189

Males

9143

M60-64

9143

Half→25K

13.1 - 15.5 mi

Top 41%
×4story building
+66ft-88ft

Overall

10998

Males

8504

M60-64

8504

25K→30K

15.5 - 18.6 mi

Top 47%
×9story building
+181ft-148ft

Overall

12384

Males

8964

M60-64

8964

30K→20M

18.6 - 20.0 mi

Top 43%
×5story building
+64ft-50ft

Overall

11382

Males

8444

M60-64

8444

20M→21M

20.0 - 21.0 mi

Top 45%
×8story building
+106ft-24ft

Overall

11849

Males

8510

M60-64

8510

21M→35K

21.0 - 21.8 mi

Top 38%
×7story building
+17ft-86ft

Overall

10146

Males

7706

M60-64

7706

35K→23M

21.8 - 23.0 mi

Top 32%
×5story building
+23ft-63ft

Overall

8514

Males

6715

M60-64

6715

23M→24M

23.0 - 24.0 mi

Top 29%
×6story building
+12ft-82ft

Overall

7607

Males

6086

M60-64

6086

24M→40K

24.0 - 24.9 mi

Top 32%
×1story
+6ft-20ft

Overall

8529

Males

6581

M60-64

6581

40K→25.2M

24.9 - 25.2 mi

Top 37%
×1story
+13ft-16ft

Overall

9843

Males

7229

M60-64

7229

25.2M→Finish

25.2 - 26.2 mi

Top 44%
×2story building
+22ft-21ft

Overall

11836

Males

8198

M60-64

8198

Passing Analysis

Category:
Athletes Passed
2201
Passed By
1679
Net Change
+522
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#12190
5K → 10K190492-302#12190#12492
10K → 15K131318-187#12492#12679
15K → 20K78485-407#12679#13086
20K → Half6410+54#13086#13032
Half → 25K3825+377#13032#12655
25K → 30K223159+64#12655#12591
30K → 20M16346+117#12591#12474
20M → 21M12148+73#12474#12401
21M → 35K9113+78#12401#12323
35K → 23M2587+251#12323#12072
23M → 24M2134+209#12072#11863
24M → 40K1549+145#11863#11718
40K → 25.2M516+45#11718#11673
25.2M → Finish8277+5#11673#11668
TOTALS22011679+522
📊

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