Boston Marathon logo
BOSTON MARATHON 2023

Xiaohua Gong

Bib: 17390•M

CA

0:00
0:00
/ mi
Masters
Be the first to cheer!
Overall
#0 / 26622
Gender (Male)
#0 / 15176
Masters (Masters Men)
#0 / 9891
Division (M55-59)
#0 / 1422
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
7:53/mi
24:31
↑ 97↓ 3451.5%
10K· 6.21 mi
8:02/mi
49:30
↑ 79↓ 1380.4%
15K· 9.32 mi
8:14/mi
1:15:05
↑ 67↓ 78
20K· 12.43 mi
8:44/mi
1:42:13
↑ 106↓ 860.1%
Half· 13.11 mi
8:40/mi
1:48:08
↑ 19↓ 370.5%
25K· 15.53 mi
8:48/mi
2:09:28
↑ 66↓ 880.2%
30K· 18.64 mi
9:13/mi
2:38:07
↑ 181↓ 1480.2%
20M
9:29/mi
2:51:00
↑ 64↓ 500.2%
21M
10:17/mi
3:01:17
↑ 106↓ 241.6%
35K· 21.75 mi
8:59/mi
3:08:00
↑ 17↓ 861.7%
23M
9:33/mi
3:19:58
↑ 23↓ 630.6%
24M
9:25/mi
3:29:23
↓ 821.3%
40K· 24.85 mi
9:32/mi
3:37:32
↓ 200.3%
25.2M
10:44/mi
3:41:14
↑ 13↓ 160.2%
Finish· 26.22 mi
9:28/mi
3:50:53
↑ 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
Time1:48:08
Pace8:15 /mi
2nd Half
Distance13.11 mi
Time2:02:45
Pace9:22 /mi
📊Positive Split: 13.5% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:14:3524:317:5324:31
7:53
-
10K
6.21 mi11:39:3449:307:5824:59
8:02
+0:09
15K
9.32 mi12:05:091:15:058:0325:35
8:14
+0:12
20K
12.43 mi12:32:171:42:138:1427:08
8:44
+0:30
Half
13.11 mi12:38:121:48:088:155:55
8:40
-0:04
25K
15.53 mi12:59:322:09:288:2021:20
8:48
+0:08
30K
18.64 mi13:28:112:38:078:2928:39
9:13
+0:25
20M
20.00 mi13:41:042:51:008:3312:53
9:29
+0:16
21M
21.00 mi13:51:213:01:178:3810:17
10:17
+0:48
35K
21.75 mi13:58:043:08:008:396:43
8:59
-1:18
23M
23.00 mi14:10:023:19:588:4211:58
9:33
+0:34
24M
24.00 mi14:19:273:29:238:439:25
9:25
-0:08
40K
24.85 mi14:27:363:37:328:458:09
9:32
+0:07
25.2M
25.20 mi14:31:183:41:148:473:42
10:44
+1:12
Finish
26.22 mi14:40:573:50:538:499:39
9:28
-1:16

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

7:53 /mi

Average Pace

8:49 /mi

Slowest Pace

10:44 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

2:09:28

56% of race

Time at Steady Pace

1:27:26

38% of race

Time at Slower Pace

13:59

6% of race

Average Pace: 8:48 /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 mi11:14:3524:317:5324:31
7:53
#13157
10K
6.21 mi11:39:3449:307:5824:59
8:02
#14125
15K
9.32 mi12:05:091:15:058:0325:35
8:14
#14786
20K
12.43 mi12:32:171:42:138:1427:08
8:44
#15747
Half
13.11 mi12:38:121:48:088:155:55
8:40
#15902
25K
15.53 mi12:59:322:09:288:2021:20
8:48
#16279
30K
18.64 mi13:28:112:38:078:2928:39
9:13
#16662
20M
20.00 mi13:41:042:51:008:3312:53
9:29
#16830
21M
21.00 mi13:51:213:01:178:3810:17
10:17
#16981
35K
21.75 mi13:58:043:08:008:396:43
8:59
#17024
23M
23.00 mi14:10:023:19:588:4211:58
9:33
#17131
24M
24.00 mi14:19:273:29:238:439:25
9:25
#17242
40K
24.85 mi14:27:363:37:328:458:09
9:32
#17308
25.2M
25.20 mi14:31:183:41:148:473:42
10:44
#17380
Finish
26.22 mi14:40:573:50:538:499:39
9:28
#17543
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM55-59Seg. OverallSeg. MalesSeg. M55-59
5K3.11 mi3.11 mi131579615961516104(Top 60%)10732(Top 71%)10732(Top 755%)
10K6.21 mi3.10 mi14125-9689992-3779992-37715096(Top 57%)10354(Top 68%)10354(Top 728%)
15K9.32 mi3.11 mi14786-66110235-24310235-24316104(Top 60%)10732(Top 71%)10732(Top 755%)
20K12.43 mi3.11 mi15747-96110582-34710582-34718312(Top 69%)11610(Top 77%)11610(Top 816%)
Half13.11 mi0.68 mi15902-15510637-5510637-5518730(Top 70%)11785(Top 78%)11785(Top 829%)
25K15.53 mi2.42 mi16279-37710759-12210759-12217927(Top 67%)11383(Top 75%)11383(Top 800%)
30K18.64 mi3.11 mi16662-38310858-9910858-9918252(Top 69%)11441(Top 75%)11441(Top 805%)
20M20.00 mi1.36 mi16830-16810933-7510933-7518777(Top 71%)11577(Top 76%)11577(Top 814%)
21M21.00 mi1.00 mi16981-15110982-4910982-4918963(Top 71%)11622(Top 77%)11622(Top 817%)
35K21.75 mi0.75 mi17024-4310989-710989-717800(Top 67%)11056(Top 73%)11056(Top 777%)
23M23.00 mi1.25 mi17131-10711015-2611015-2618527(Top 70%)11362(Top 75%)11362(Top 799%)
24M24.00 mi1.00 mi17242-11111050-3511050-3518894(Top 71%)11485(Top 76%)11485(Top 808%)
40K24.85 mi0.85 mi17308-6611055-511055-518428(Top 69%)11235(Top 74%)11235(Top 790%)
25.2M25.20 mi0.35 mi17380-7211076-2111076-2119739(Top 74%)11791(Top 78%)11791(Top 829%)
Finish26.22 mi1.02 mi17543-16311138-6211138-6219996(Top 75%)11974(Top 79%)11974(Top 842%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 60%
×21story building
+97ft-345ft

Overall

16104

Males

10732

M55-59

10732

5K→10K

3.1 - 6.2 mi

Top 57%
×5story building
+79ft-138ft

Overall

15096

Males

10354

M55-59

10354

10K→15K

6.2 - 9.3 mi

Top 60%
×3story building
+67ft-78ft

Overall

16104

Males

10732

M55-59

10732

15K→20K

9.3 - 12.4 mi

Top 69%
×5story building
+106ft-86ft

Overall

18312

Males

11610

M55-59

11610

20K→Half

12.4 - 13.1 mi

Top 70%
×2story building
+19ft-37ft

Overall

18730

Males

11785

M55-59

11785

Half→25K

13.1 - 15.5 mi

Top 67%
×4story building
+66ft-88ft

Overall

17927

Males

11383

M55-59

11383

25K→30K

15.5 - 18.6 mi

Top 69%
×9story building
+181ft-148ft

Overall

18252

Males

11441

M55-59

11441

30K→20M

18.6 - 20.0 mi

Top 71%
×5story building
+64ft-50ft

Overall

18777

Males

11577

M55-59

11577

20M→21M

20.0 - 21.0 mi

Top 71%
×8story building
+106ft-24ft

Overall

18963

Males

11622

M55-59

11622

21M→35K

21.0 - 21.8 mi

Top 67%
×7story building
+17ft-86ft

Overall

17800

Males

11056

M55-59

11056

35K→23M

21.8 - 23.0 mi

Top 70%
×5story building
+23ft-63ft

Overall

18527

Males

11362

M55-59

11362

23M→24M

23.0 - 24.0 mi

Top 71%
×6story building
+12ft-82ft

Overall

18894

Males

11485

M55-59

11485

24M→40K

24.0 - 24.9 mi

Top 69%
×1story
+6ft-20ft

Overall

18428

Males

11235

M55-59

11235

40K→25.2M

24.9 - 25.2 mi

Top 74%
×1story
+13ft-16ft

Overall

19739

Males

11791

M55-59

11791

25.2M→Finish

25.2 - 26.2 mi

Top 75%
×2story building
+22ft-21ft

Overall

19996

Males

11974

M55-59

11974

Passing Analysis

Category:
Athletes Passed
561
Passed By
4947
Net Change
-4386
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#13157
5K → 10K491017-968#13157#14125
10K → 15K50711-661#14125#14786
15K → 20K30991-961#14786#15747
20K → Half7162-155#15747#15902
Half → 25K55432-377#15902#16279
25K → 30K89472-383#16279#16662
30K → 20M43211-168#16662#16830
20M → 21M40191-151#16830#16981
21M → 35K3477-43#16981#17024
35K → 23M53160-107#17024#17131
23M → 24M30141-111#17131#17242
24M → 40K46112-66#17242#17308
40K → 25.2M1486-72#17308#17380
25.2M → Finish21184-163#17380#17543
TOTALS5614947-4386
📊

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