Boston Marathon logo
BOSTON MARATHON 2023

Lanie Van Heerden

Bib: 6518•M

NY

0:00
0:00
/ mi
Be the first to cheer!
Overall
#0 / 26622
Top 16%
Gender (Male)
#0 / 15176
Top 26%
Division (M18-39)
#0 / 5285
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
6:47/mi
21:06
↑ 97↓ 3451.5%
10K· 6.21 mi
6:43/mi
41:57
↑ 79↓ 1380.4%
15K· 9.32 mi
6:42/mi
1:02:46
↑ 67↓ 78
20K· 12.43 mi
6:46/mi
1:23:48
↑ 106↓ 860.1%
Half· 13.11 mi
6:42/mi
1:28:22
↑ 19↓ 370.5%
25K· 15.53 mi
6:44/mi
1:44:42
↑ 66↓ 880.2%
30K· 18.64 mi
6:59/mi
2:06:25
↑ 181↓ 1480.2%
20M
7:11/mi
2:16:11
↑ 64↓ 500.2%
21M
7:29/mi
2:23:40
↑ 106↓ 241.6%
35K· 21.75 mi
8:28/mi
2:30:00
↑ 17↓ 861.7%
23M
8:12/mi
2:40:16
↑ 23↓ 630.6%
24M
6:15/mi
2:46:31
↓ 821.3%
40K· 24.85 mi
6:20/mi
2:51:56
↓ 200.3%
25.2M
6:40/mi
2:54:14
↑ 13↓ 160.2%
Finish· 26.22 mi
6:01/mi
3:00:22
↑ 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
Time1:28:22
Pace6:44 /mi
2nd Half
Distance13.11 mi
Time1:32:00
Pace7:01 /mi
📊Positive Split: 4.1% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:24:2221:066:4721:06
6:47
-
10K
6.21 mi10:45:1341:576:4520:51
6:43
-0:04
15K
9.32 mi11:06:021:02:466:4420:49
6:42
-0:01
20K
12.43 mi11:27:041:23:486:4521:02
6:46
+0:04
Half
13.11 mi11:31:381:28:226:444:34
6:42
-0:04
25K
15.53 mi11:47:581:44:426:4416:20
6:44
+0:02
30K
18.64 mi12:09:412:06:256:4721:43
6:59
+0:15
20M
20.00 mi12:19:272:16:116:499:46
7:11
+0:12
21M
21.00 mi12:26:562:23:406:507:29
7:29
+0:18
35K
21.75 mi12:33:162:30:006:546:20
8:28
+0:59
23M
23.00 mi12:43:322:40:166:5810:16
8:12
-0:16
24M
24.00 mi12:49:472:46:316:566:15
6:15
-1:57
40K
24.85 mi12:55:122:51:566:555:25
6:20
+0:05
25.2M
25.20 mi12:57:302:54:146:552:18
6:40
+0:20
Finish
26.22 mi13:03:383:00:226:536:08
6:01
-0:39

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

6:01 /mi

Average Pace

6:53 /mi

Slowest Pace

8:28 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

17:48

10% of race

Time at Steady Pace

2:08:43

71% of race

Time at Slower Pace

33:51

19% of race

Average Pace: 6:53 /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 mi10:24:2221:066:4721:06
6:47
#4593
10K
6.21 mi10:45:1341:576:4520:51
6:43
#4494
15K
9.32 mi11:06:021:02:466:4420:49
6:42
#4360
20K
12.43 mi11:27:041:23:486:4521:02
6:46
#4287
Half
13.11 mi11:31:381:28:226:444:34
6:42
#4270
25K
15.53 mi11:47:581:44:426:4416:20
6:44
#4135
30K
18.64 mi12:09:412:06:256:4721:43
6:59
#4133
20M
20.00 mi12:19:272:16:116:499:46
7:11
#4236
21M
21.00 mi12:26:562:23:406:507:29
7:29
#4233
35K
21.75 mi12:33:162:30:006:546:20
8:28
#4697
23M
23.00 mi12:43:322:40:166:5810:16
8:12
#5040
24M
24.00 mi12:49:472:46:316:566:15
6:15
#4790
40K
24.85 mi12:55:122:51:566:555:25
6:20
#4582
25.2M
25.20 mi12:57:302:54:146:552:18
6:40
#4491
Finish
26.22 mi13:03:383:00:226:536:08
6:01
#4274
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM18-39Seg. OverallSeg. MalesSeg. M18-39
5K3.11 mi3.11 mi4593428142814132(Top 16%)3878(Top 26%)3878(Top 73%)
10K6.21 mi3.10 mi4494+994201+804201+804439(Top 17%)4150(Top 27%)4150(Top 79%)
15K9.32 mi3.11 mi4360+1344080+1214080+1214132(Top 16%)3878(Top 26%)3878(Top 73%)
20K12.43 mi3.11 mi4287+734017+634017+634167(Top 16%)3906(Top 26%)3906(Top 74%)
Half13.11 mi0.68 mi4270+173998+193998+194283(Top 16%)4007(Top 26%)4007(Top 76%)
25K15.53 mi2.42 mi4135+1353877+1213877+1213660(Top 14%)3449(Top 23%)3449(Top 65%)
30K18.64 mi3.11 mi4133+23885-83885-84284(Top 16%)3986(Top 26%)3986(Top 75%)
20M20.00 mi1.36 mi4236-1033972-873972-875028(Top 19%)4561(Top 30%)4561(Top 86%)
21M21.00 mi1.00 mi4233+33963+93963+94481(Top 17%)4083(Top 27%)4083(Top 77%)
35K21.75 mi0.75 mi4697-4644371-4084371-40815051(Top 57%)9877(Top 65%)9877(Top 187%)
23M23.00 mi1.25 mi5040-3434642-2714642-27111153(Top 42%)8036(Top 53%)8036(Top 152%)
24M24.00 mi1.00 mi4790+2504440+2024440+2021221(Top 5%)1158(Top 8%)1158(Top 22%)
40K24.85 mi0.85 mi4582+2084263+1774263+1771027(Top 4%)974(Top 6%)974(Top 18%)
25.2M25.20 mi0.35 mi4491+914184+794184+79872(Top 3%)833(Top 5%)833(Top 16%)
Finish26.22 mi1.02 mi4274+2173988+1963988+196795(Top 3%)762(Top 5%)762(Top 14%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 16%
×21story building
+97ft-345ft

Overall

4132

Males

3878

M18-39

3878

5K→10K

3.1 - 6.2 mi

Top 17%
×5story building
+79ft-138ft

Overall

4439

Males

4150

M18-39

4150

10K→15K

6.2 - 9.3 mi

Top 16%
×3story building
+67ft-78ft

Overall

4132

Males

3878

M18-39

3878

15K→20K

9.3 - 12.4 mi

Top 16%
×5story building
+106ft-86ft

Overall

4167

Males

3906

M18-39

3906

20K→Half

12.4 - 13.1 mi

Top 16%
×2story building
+19ft-37ft

Overall

4283

Males

4007

M18-39

4007

Half→25K

13.1 - 15.5 mi

Top 14%
×4story building
+66ft-88ft

Overall

3660

Males

3449

M18-39

3449

25K→30K

15.5 - 18.6 mi

Top 16%
×9story building
+181ft-148ft

Overall

4284

Males

3986

M18-39

3986

30K→20M

18.6 - 20.0 mi

Top 19%
×5story building
+64ft-50ft

Overall

5028

Males

4561

M18-39

4561

20M→21M

20.0 - 21.0 mi

Top 17%
×8story building
+106ft-24ft

Overall

4481

Males

4083

M18-39

4083

21M→35K

21.0 - 21.8 mi

Top 57%
×7story building
+17ft-86ft

Overall

15051

Males

9877

M18-39

9877

35K→23M

21.8 - 23.0 mi

Top 42%
×5story building
+23ft-63ft

Overall

11153

Males

8036

M18-39

8036

23M→24M

23.0 - 24.0 mi

Top 5%
×6story building
+12ft-82ft

Overall

1221

Males

1158

M18-39

1158

24M→40K

24.0 - 24.9 mi

Top 4%
×1story
+6ft-20ft

Overall

1027

Males

974

M18-39

974

40K→25.2M

24.9 - 25.2 mi

Top 3%
×1story
+13ft-16ft

Overall

872

Males

833

M18-39

833

25.2M→Finish

25.2 - 26.2 mi

Top 3%
×2story building
+22ft-21ft

Overall

795

Males

762

M18-39

762

Passing Analysis

Category:
Athletes Passed
1781
Passed By
1462
Net Change
+319
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#4593
5K → 10K264165+99#4593#4494
10K → 15K19965+134#4494#4360
15K → 20K12754+73#4360#4287
20K → Half2710+17#4287#4270
Half → 25K15520+135#4270#4135
25K → 30K122120+2#4135#4133
30K → 20M36139-103#4133#4236
20M → 21M6663+3#4236#4233
21M → 35K3467-464#4233#4697
35K → 23M16359-343#4697#5040
23M → 24M2500+250#5040#4790
24M → 40K2080+208#4790#4582
40K → 25.2M910+91#4582#4491
25.2M → Finish2170+217#4491#4274
TOTALS17811462+319
📊

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