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BOSTON MARATHON 2026

Runsong Xu

Bib: 13326•M

CA

Boston Marathon logo
0:00
0:00
/ mi
Masters
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Overall
#0 / 29021
Top 24%
Gender (Male)
#0 / 16340
Top 37%
Masters (Masters Men)
#0 / 10617
Top 23%
Age Group (M50-54)
#0 / 1868
Top 18%
Race Day Weather
51°/41°F
overcast clouds

Race Timeline and Course Information

Your journey through the course with elevation, pacing, and checkpoint details

⏱️ Race Timeline

Watch your race unfold from start to finish

Start
0:00:00
Race begins
5K
22:05
3.11 mi
Rank: #9391
Start → 5K
22:05 | 7:07/mi
10K
43:34
6.21 mi
Rank: #8661 (+730)
5K → 10K
21:29 | 6:55/mi
15K
1:04:49
9.32 mi
Rank: #8236 (+425)
10K → 15K
21:15 | 6:51/mi
20K
1:26:21
12.43 mi
Rank: #7989 (+247)
15K → 20K
21:32 | 6:56/mi
HALF
1:31:00
13.11 mi
Rank: #7941 (+48)
20K → HALF
4:39 | 6:50/mi
25K
1:48:04
15.53 mi
Rank: #7836 (+105)
HALF → 25K
17:04 | 7:03/mi
30K
2:10:33
18.64 mi
Rank: #7729 (+107)
25K → 30K
22:29 | 7:15/mi
20M
2:20:16
20.00 mi
Rank: #7602 (+127)
30K → 20M
9:43 | 7:10/mi
21M
2:27:56
21.00 mi
Rank: #7558 (+44)
20M → 21M
7:40 | 7:40/mi
35K
2:32:57
21.75 mi
Rank: #7432 (+126)
21M → 35K
5:01 | 6:43/mi
23M
2:42:01
23.00 mi
Rank: #7350 (+82)
35K → 23M
9:04 | 7:15/mi
24M
2:49:10
24.00 mi
Rank: #7292 (+58)
23M → 24M
7:09 | 7:09/mi
40K
2:55:13
24.85 mi
Rank: #7188 (+104)
24M → 40K
6:03 | 7:05/mi
25.2M
2:57:51
25.20 mi
Rank: #7139 (+49)
40K → 25.2M
2:38 | 7:39/mi
FINISH
3:04:47
26.22 mi
Rank: #7069 (+70)
25.2M → FINISH
6:56 | 6:49/mi

Splits & Pacing

Detailed breakdown of your race performance at each timing point

Half Splits

1st HalfFaster
via HALF
Distance13.11 mi
Time1:31:00
Pace6:57 /mi
2nd Half
Distance13.11 mi
Time1:33:47
Pace7:10 /mi
📊Positive Split: 3.1% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:51:0822:057:0722:05
7:07
-
10K
6.21 mi11:12:3743:347:0121:29
6:55
-0:12
15K
9.32 mi11:33:521:04:496:5821:15
6:51
-0:04
20K
12.43 mi11:55:241:26:216:5721:32
6:56
+0:05
HALF
13.11 mi12:00:031:31:006:574:39
6:50
-0:06
25K
15.53 mi12:17:071:48:046:5817:04
7:03
+0:13
30K
18.64 mi12:39:362:10:337:0122:29
7:15
+0:12
20M
20.00 mi12:49:192:20:167:019:43
7:10
-0:05
21M
21.00 mi12:56:592:27:567:037:40
7:40
+0:30
35K
21.75 mi13:02:002:32:577:025:01
6:43
-0:57
23M
23.00 mi13:11:042:42:017:039:04
7:15
+0:32
24M
24.00 mi13:18:132:49:107:037:09
7:09
-0:06
40K
24.85 mi13:24:162:55:137:036:03
7:05
-0:04
25.2M
25.20 mi13:26:542:57:517:042:38
7:39
+0:34
FINISH
26.22 mi13:33:503:04:477:046:56
6:49
-0:50

Checkpoint Splits Visualizations

Explore your race data through different visual perspectives. Scroll to discover each visualization.

📈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

6:43 /mi

Average Pace

7:03 /mi

Slowest Pace

7:40 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Bar length shows time spent in each segment. Colors mark your faster to slower segments, relative to your own pace.

Time at Faster Pace

2:54:29

94% of race

Time at Steady Pace

10:18

6% of race

Time at Slower Pace

0:00

0% of race

Average Pace: 7:03 /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

Enhanced split table showing pace trends through mini sparkline visualizations.

Overall Pace Trend

CheckpointDistanceTime of DayTimeAvg PaceSegmentPaceTrendRank
5K
3.11 mi10:51:0822:057:0722:05
7:07
#9391
10K
6.21 mi11:12:3743:347:0121:29
6:55
#8661
15K
9.32 mi11:33:521:04:496:5821:15
6:51
#8236
20K
12.43 mi11:55:241:26:216:5721:32
6:56
#7989
HALF
13.11 mi12:00:031:31:006:574:39
6:50
#7941
25K
15.53 mi12:17:071:48:046:5817:04
7:03
#7836
30K
18.64 mi12:39:362:10:337:0122:29
7:15
#7729
20M
20.00 mi12:49:192:20:167:019:43
7:10
#7602
21M
21.00 mi12:56:592:27:567:037:40
7:40
#7558
35K
21.75 mi13:02:002:32:577:025:01
6:43
#7432
23M
23.00 mi13:11:042:42:017:039:04
7:15
#7350
24M
24.00 mi13:18:132:49:107:037:09
7:09
#7292
40K
24.85 mi13:24:162:55:137:036:03
7:05
#7188
25.2M
25.20 mi13:26:542:57:517:042:38
7:39
#7139
FINISH
26.22 mi13:33:503:04:477:046:56
6:49
#7069
Faster pace
Steady pace
Slower pace

Rankings

Your position at each checkpoint and how you ranked in each segment

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM50-54Seg. OverallSeg. MalesSeg. M50-54
5K3.11 mi3.11 mi9391775877587211(Top 25%)6332(Top 39%)6332(Top 339%)
10K6.21 mi3.10 mi8661+7307301+4577301+4578034(Top 28%)6909(Top 42%)6909(Top 370%)
15K9.32 mi3.11 mi8236+4257027+2747027+2747211(Top 25%)6332(Top 39%)6332(Top 339%)
20K12.43 mi3.11 mi7989+2476861+1666861+1667353(Top 25%)6405(Top 39%)6405(Top 343%)
HALF13.11 mi0.68 mi7941+486836+256836+257287(Top 25%)6372(Top 39%)6372(Top 341%)
25K15.53 mi2.42 mi7836+1056758+786758+787646(Top 26%)6548(Top 40%)6548(Top 351%)
30K18.64 mi3.11 mi7729+1076656+1026656+1027634(Top 26%)6391(Top 39%)6391(Top 342%)
20M20.00 mi1.36 mi7602+1276563+936563+936615(Top 23%)5660(Top 35%)5660(Top 303%)
21M21.00 mi1.00 mi7558+446519+446519+447595(Top 26%)6124(Top 37%)6124(Top 328%)
35K21.75 mi0.75 mi7432+1266421+986421+985036(Top 17%)4463(Top 27%)4463(Top 239%)
23M23.00 mi1.25 mi7350+826344+776344+777064(Top 24%)5792(Top 35%)5792(Top 310%)
24M24.00 mi1.00 mi7292+586286+586286+587487(Top 26%)5959(Top 36%)5959(Top 319%)
40K24.85 mi0.85 mi7188+1046184+1026184+1025955(Top 21%)4967(Top 30%)4967(Top 266%)
25.2M25.20 mi0.35 mi7139+496142+426142+426023(Top 21%)4942(Top 30%)4942(Top 265%)
FINISH26.22 mi1.02 mi7069+706084+586084+586139(Top 21%)4960(Top 30%)4960(Top 266%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 25%
×21
+97ft-345ft

Overall

7211

Males

6332

M50-54

6332

5K→10K

3.1 - 6.2 mi

Top 28%
×5
+79ft-138ft

Overall

8034

Males

6909

M50-54

6909

10K→15K

6.2 - 9.3 mi

Top 25%
×3
+67ft-78ft

Overall

7211

Males

6332

M50-54

6332

15K→20K

9.3 - 12.4 mi

Top 25%
×5
+106ft-86ft

Overall

7353

Males

6405

M50-54

6405

20K→HALF

12.4 - 13.1 mi

Top 25%
×2
+19ft-37ft

Overall

7287

Males

6372

M50-54

6372

HALF→25K

13.1 - 15.5 mi

Top 26%
×4
+66ft-88ft

Overall

7646

Males

6548

M50-54

6548

25K→30K

15.5 - 18.6 mi

Top 26%
×9
+181ft-148ft

Overall

7634

Males

6391

M50-54

6391

30K→20M

18.6 - 20.0 mi

Top 23%
×5
+64ft-50ft

Overall

6615

Males

5660

M50-54

5660

20M→21M

20.0 - 21.0 mi

Top 26%
×8
+106ft-24ft

Overall

7595

Males

6124

M50-54

6124

21M→35K

21.0 - 21.8 mi

Top 17%
×7
+17ft-86ft

Overall

5036

Males

4463

M50-54

4463

35K→23M

21.8 - 23.0 mi

Top 24%
×5
+23ft-63ft

Overall

7064

Males

5792

M50-54

5792

23M→24M

23.0 - 24.0 mi

Top 26%
×6
+12ft-82ft

Overall

7487

Males

5959

M50-54

5959

24M→40K

24.0 - 24.9 mi

Top 21%
×1
+6ft-20ft

Overall

5955

Males

4967

M50-54

4967

40K→25.2M

24.9 - 25.2 mi

Top 21%
×1
+13ft-16ft

Overall

6023

Males

4942

M50-54

4942

25.2M→FINISH

25.2 - 26.2 mi

Top 21%
×2
+22ft-21ft

Overall

6139

Males

4960

M50-54

4960

Passing

Athletes you passed and who passed you throughout the race

Passing Analysis

Category:
Athletes Passed
2714
Passed By
392
Net Change
+2322
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#9391
5K → 10K75222+730#9391#8661
10K → 15K43813+425#8661#8236
15K → 20K27932+247#8236#7989
20K → HALF546+48#7989#7941
HALF → 25K16156+105#7941#7836
25K → 30K19588+107#7836#7729
30K → 20M14215+127#7729#7602
20M → 21M8642+44#7602#7558
21M → 35K1271+126#7558#7432
35K → 23M11634+82#7432#7350
23M → 24M9537+58#7350#7292
24M → 40K12016+104#7292#7188
40K → 25.2M567+49#7188#7139
25.2M → FINISH9323+70#7139#7069
TOTALS2714392+2322
📊

Passing Analysis Visualizations

Explore your passing analysis through 5 different visualizations. Scroll to discover each one.

Time:
Category:

📈Position Graph

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🎨Heatmap Timeline

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🔄Passing Circle

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🌊Position Flow

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🏃Race Lanes

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Qualifying & Age Grade

See how your performance stacks up against qualifying standards

OTQ

Olympic Trials Qualifying analysis available

Activity Data

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Public Race Data

Boston Athletic Association

Boston Athletic Association

Mika Timing

Mika Timing