Boston Marathon logo
BOSTON MARATHON 2023

Xiaogeng Jin

Bib: 11043•M

CA

0:00
0:00
/ mi
Masters
Be the first to cheer!
Overall
#0 / 26622
Top 28%
Gender (Male)
#0 / 15176
Top 42%
Masters (Masters Men)
#0 / 9891
Top 28%
Division (M45-49)
#0 / 2252
Top 38%
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
7:33/mi
23:27
↑ 97↓ 3451.5%
10K· 6.21 mi
7:19/mi
46:11
↑ 79↓ 1380.4%
15K· 9.32 mi
7:19/mi
1:08:55
↑ 67↓ 78
20K· 12.43 mi
7:27/mi
1:32:05
↑ 106↓ 860.1%
Half· 13.11 mi
7:09/mi
1:36:58
↑ 19↓ 370.5%
25K· 15.53 mi
7:27/mi
1:55:03
↑ 66↓ 880.2%
30K· 18.64 mi
7:28/mi
2:18:16
↑ 181↓ 1480.2%
20M
7:29/mi
2:28:26
↑ 64↓ 500.2%
21M
7:56/mi
2:36:22
↑ 106↓ 241.6%
35K· 21.75 mi
7:06/mi
2:41:41
↑ 17↓ 861.7%
23M
7:29/mi
2:51:03
↑ 23↓ 630.6%
24M
7:00/mi
2:58:03
↓ 821.3%
40K· 24.85 mi
7:03/mi
3:04:05
↓ 200.3%
25.2M
7:38/mi
3:06:43
↑ 13↓ 160.2%
Finish· 26.22 mi
6:49/mi
3:13:40
↑ 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 Half⚖️ Balanced
Distance13.11 mi
Time1:36:58
Pace7:24 /mi
2nd Half⚖️ Balanced
Distance13.11 mi
Time1:36:42
Pace7:23 /mi
📊Even Split: Consistent pacing between halves

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:51:3023:277:3323:27
7:33
-
10K
6.21 mi11:14:1446:117:2622:44
7:19
-0:14
15K
9.32 mi11:36:581:08:557:2422:44
7:19
0:00
20K
12.43 mi12:00:081:32:057:2523:10
7:27
+0:08
Half
13.11 mi12:05:011:36:587:244:53
7:09
-0:18
25K
15.53 mi12:23:061:55:037:2418:05
7:27
+0:18
30K
18.64 mi12:46:192:18:167:2523:13
7:28
+0:01
20M
20.00 mi12:56:292:28:267:2510:10
7:29
+0:01
21M
21.00 mi13:04:252:36:227:277:56
7:56
+0:27
35K
21.75 mi13:09:442:41:417:265:19
7:06
-0:50
23M
23.00 mi13:19:062:51:037:269:22
7:29
+0:23
24M
24.00 mi13:26:062:58:037:257:00
7:00
-0:29
40K
24.85 mi13:32:083:04:057:246:02
7:03
+0:03
25.2M
25.20 mi13:34:463:06:437:252:38
7:38
+0:35
Finish
26.22 mi13:41:433:13:407:246:57
6:49
-0:49

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

6:49 /mi

Average Pace

7:24 /mi

Slowest Pace

7:56 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

2:39:39

82% of race

Time at Steady Pace

34:01

18% of race

Time at Slower Pace

0:00

0% of race

Average Pace: 7:23 /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 mi10:51:3023:277:3323:27
7:33
#10038
10K
6.21 mi11:14:1446:117:2622:44
7:19
#9427
15K
9.32 mi11:36:581:08:557:2422:44
7:19
#9133
20K
12.43 mi12:00:081:32:057:2523:10
7:27
#9071
Half
13.11 mi12:05:011:36:587:244:53
7:09
#8993
25K
15.53 mi12:23:061:55:037:2418:05
7:27
#8872
30K
18.64 mi12:46:192:18:167:2523:13
7:28
#8497
20M
20.00 mi12:56:292:28:267:2510:10
7:29
#8328
21M
21.00 mi13:04:252:36:227:277:56
7:56
#8238
35K
21.75 mi13:09:442:41:417:265:19
7:06
#8123
23M
23.00 mi13:19:062:51:037:269:22
7:29
#7971
24M
24.00 mi13:26:062:58:037:257:00
7:00
#7775
40K
24.85 mi13:32:083:04:057:246:02
7:03
#7582
25.2M
25.20 mi13:34:463:06:437:252:38
7:38
#7532
Finish
26.22 mi13:41:433:13:407:246:57
6:49
#7341
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM45-49Seg. OverallSeg. MalesSeg. M45-49
5K3.11 mi3.11 mi10038814281428690(Top 33%)7360(Top 48%)7360(Top 327%)
10K6.21 mi3.10 mi9427+6117831+3117831+3118953(Top 34%)7548(Top 50%)7548(Top 335%)
15K9.32 mi3.11 mi9133+2947645+1867645+1868690(Top 33%)7360(Top 48%)7360(Top 327%)
20K12.43 mi3.11 mi9071+627594+517594+518949(Top 34%)7467(Top 49%)7467(Top 332%)
Half13.11 mi0.68 mi8993+787540+547540+547529(Top 28%)6588(Top 43%)6588(Top 293%)
25K15.53 mi2.42 mi8872+1217464+767464+768451(Top 32%)7091(Top 47%)7091(Top 315%)
30K18.64 mi3.11 mi8497+3757187+2777187+2777037(Top 26%)6095(Top 40%)6095(Top 271%)
20M20.00 mi1.36 mi8328+1697054+1337054+1336662(Top 25%)5750(Top 38%)5750(Top 255%)
21M21.00 mi1.00 mi8238+906985+696985+696918(Top 26%)5814(Top 38%)5814(Top 258%)
35K21.75 mi0.75 mi8123+1156901+846901+845959(Top 22%)5212(Top 34%)5212(Top 231%)
23M23.00 mi1.25 mi7971+1526783+1186783+1186315(Top 24%)5387(Top 35%)5387(Top 239%)
24M24.00 mi1.00 mi7775+1966638+1456638+1454692(Top 18%)4206(Top 28%)4206(Top 187%)
40K24.85 mi0.85 mi7582+1936501+1376501+1374165(Top 16%)3726(Top 25%)3726(Top 165%)
25.2M25.20 mi0.35 mi7532+506458+436458+434591(Top 17%)4004(Top 26%)4004(Top 178%)
Finish26.22 mi1.02 mi7341+1916309+1496309+1494202(Top 16%)3706(Top 24%)3706(Top 165%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 33%
×21story building
+97ft-345ft

Overall

8690

Males

7360

M45-49

7360

5K→10K

3.1 - 6.2 mi

Top 34%
×5story building
+79ft-138ft

Overall

8953

Males

7548

M45-49

7548

10K→15K

6.2 - 9.3 mi

Top 33%
×3story building
+67ft-78ft

Overall

8690

Males

7360

M45-49

7360

15K→20K

9.3 - 12.4 mi

Top 34%
×5story building
+106ft-86ft

Overall

8949

Males

7467

M45-49

7467

20K→Half

12.4 - 13.1 mi

Top 28%
×2story building
+19ft-37ft

Overall

7529

Males

6588

M45-49

6588

Half→25K

13.1 - 15.5 mi

Top 32%
×4story building
+66ft-88ft

Overall

8451

Males

7091

M45-49

7091

25K→30K

15.5 - 18.6 mi

Top 26%
×9story building
+181ft-148ft

Overall

7037

Males

6095

M45-49

6095

30K→20M

18.6 - 20.0 mi

Top 25%
×5story building
+64ft-50ft

Overall

6662

Males

5750

M45-49

5750

20M→21M

20.0 - 21.0 mi

Top 26%
×8story building
+106ft-24ft

Overall

6918

Males

5814

M45-49

5814

21M→35K

21.0 - 21.8 mi

Top 22%
×7story building
+17ft-86ft

Overall

5959

Males

5212

M45-49

5212

35K→23M

21.8 - 23.0 mi

Top 24%
×5story building
+23ft-63ft

Overall

6315

Males

5387

M45-49

5387

23M→24M

23.0 - 24.0 mi

Top 18%
×6story building
+12ft-82ft

Overall

4692

Males

4206

M45-49

4206

24M→40K

24.0 - 24.9 mi

Top 16%
×1story
+6ft-20ft

Overall

4165

Males

3726

M45-49

3726

40K→25.2M

24.9 - 25.2 mi

Top 17%
×1story
+13ft-16ft

Overall

4591

Males

4004

M45-49

4004

25.2M→Finish

25.2 - 26.2 mi

Top 16%
×2story building
+22ft-21ft

Overall

4202

Males

3706

M45-49

3706

Passing Analysis

Category:
Athletes Passed
3052*
Passed By
355
Net Change
+2697
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#10038
5K → 10K696*85+611#10038#9427
10K → 15K32935+294#9427#9133
15K → 20K16098+62#9133#9071
20K → Half813+78#9071#8993
Half → 25K15837+121#8993#8872
25K → 30K39318+375#8872#8497
30K → 20M18112+169#8497#8328
20M → 21M11828+90#8328#8238
21M → 35K1205+115#8238#8123
35K → 23M17119+152#8123#7971
23M → 24M2004+196#7971#7775
24M → 40K1941+193#7775#7582
40K → 25.2M555+50#7582#7532
25.2M → Finish1965+191#7532#7341
TOTALS3052*355+2697

* Includes athletes who did not complete a segment (DNF/DNQ).

📊

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