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BOSTON MARATHON 2025

Tao Su

Bib: 12851 M CN

0:00
0:00
/ mi
Masters
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Overall
#0 / 28404
Top 39%
Gender (Male)
#0 / 16105
Masters (Masters Men)
#0 / 10463
Top 41%
Division (M55-59)
#0 / 1648
Top 24%
Race Day Weather
50°/40°F
broken clouds

⏱️ Race Timeline

Ribbon color based on
FasterSteadySlower· vs. your average pace
Start
0:00
Race begins
469 ft elev
5K· 3.11 mi
7:08/mi
22:11
↑ 97↓ 3451.5%
220 ft elev
10K· 6.21 mi
7:17/mi
44:48
↑ 79↓ 1380.4%
157 ft elev
15K· 9.32 mi
7:20/mi
1:07:36
↑ 67↓ 78
146 ft elev
20K· 12.43 mi
7:35/mi
1:31:11
↑ 106↓ 860.1%
165 ft elev
Half· 13.11 mi
7:30/mi
1:36:18
↑ 19↓ 370.5%
148 ft elev
25K· 15.53 mi
7:50/mi
1:55:17
↑ 66↓ 880.2%
127 ft elev
30K· 18.64 mi
8:14/mi
2:20:52
↑ 181↓ 1480.2%
138 ft elev
20M
8:15/mi
2:32:05
↑ 64↓ 500.2%
148 ft elev
21M
8:52/mi
2:40:57
↑ 106↓ 241.6%
227 ft elev
35K· 21.75 mi
8:31/mi
2:47:19
↑ 17↓ 861.7%
156 ft elev
23M
8:01/mi
2:57:21
↑ 23↓ 630.6%
116 ft elev
24M
7:51/mi
3:05:12
↓ 821.3%
34 ft elev
40K· 24.85 mi
8:02/mi
3:12:04
↓ 200.3%
20 ft elev
25.2M
8:59/mi
3:15:10
↑ 13↓ 160.2%
18 ft elev
Finish· 26.22 mi
7:55/mi
3:23:14
↑ 22↓ 21
17 ft elev
Course Elevation
7–469 ft
≈
×2stacked redwood trees
•▲ 890 ft climb · ▼ 1342 ft descent

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:36:18
Pace7:21 /mi
2nd Half
Distance13.11 mi
Time1:46:56
Pace8:09 /mi
📊Positive Split: 11.0% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:50:0722:117:0822:11
7:08
-
10K
6.21 mi11:12:4444:487:1322:37
7:17
+0:09
15K
9.32 mi11:35:321:07:367:1522:48
7:20
+0:03
20K
12.43 mi11:59:071:31:117:2023:35
7:35
+0:15
Half
13.11 mi12:04:141:36:187:215:07
7:30
-0:05
25K
15.53 mi12:23:131:55:177:2518:59
7:50
+0:20
30K
18.64 mi12:48:482:20:527:3325:35
8:14
+0:24
20M
20.00 mi13:00:012:32:057:3611:13
8:15
+0:01
21M
21.00 mi13:08:532:40:577:408:52
8:52
+0:37
35K
21.75 mi13:15:152:47:197:426:22
8:31
-0:21
23M
23.00 mi13:25:172:57:217:4310:02
8:01
-0:30
24M
24.00 mi13:33:083:05:127:437:51
7:51
-0:10
40K
24.85 mi13:40:003:12:047:446:52
8:02
+0:11
25.2M
25.20 mi13:43:063:15:107:453:06
8:59
+0:57
Finish
26.22 mi13:51:103:23:147:458:04
7:55
-1:04

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

7:08 /mi

Average Pace

7:45 /mi

Slowest Pace

8:59 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

1:36:18

47% of race

Time at Steady Pace

51:48

25% of race

Time at Slower Pace

55:08

27% of race

Average Pace: 7:45 /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 mi10:50:0722:117:0822:11
7:08
#8966
10K
6.21 mi11:12:4444:487:1322:37
7:17
#9529
15K
9.32 mi11:35:321:07:367:1522:48
7:20
#9769
20K
12.43 mi11:59:071:31:117:2023:35
7:35
#10191
Half
13.11 mi12:04:141:36:187:215:07
7:30
#10262
25K
15.53 mi12:23:131:55:177:2518:59
7:50
#10617
30K
18.64 mi12:48:482:20:527:3325:35
8:14
#11087
20M
20.00 mi13:00:012:32:057:3611:13
8:15
#11114
21M
21.00 mi13:08:532:40:577:408:52
8:52
#11183
35K
21.75 mi13:15:152:47:197:426:22
8:31
#11339
23M
23.00 mi13:25:172:57:217:4310:02
8:01
#11234
24M
24.00 mi13:33:083:05:127:437:51
7:51
#11140
40K
24.85 mi13:40:003:12:047:446:52
8:02
#11076
25.2M
25.20 mi13:43:063:15:107:453:06
8:59
#11072
Finish
26.22 mi13:51:103:23:147:458:04
7:55
#11098
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM55-59Seg. OverallSeg. MalesSeg. M55-59
5K3.11 mi3.11 mi8966759275921030582518251
10K6.21 mi3.10 mi9529-5637916-3247916-3241017782498249
15K9.32 mi3.11 mi9769-2408016-1008016-1001030582518251
20K12.43 mi3.11 mi10191-4228206-1908206-1901150587358735
Half13.11 mi0.68 mi10262-718237-318237-311162888388838
25K15.53 mi2.42 mi10617-3558396-1598396-1591256990959095
30K18.64 mi3.11 mi11087-4708547-1518547-1511304691599159
20M20.00 mi1.36 mi11114-278523+248523+241213985818581
21M21.00 mi1.00 mi11183-698504+198504+191267986758675
35K21.75 mi0.75 mi11339-1568557-538557-531548299139913
23M23.00 mi1.25 mi11234+1058467+908467+901010272877287
24M24.00 mi1.00 mi11140+948380+878380+871017572567256
40K24.85 mi0.85 mi11076+648318+628318+621040972557255
25.2M25.20 mi0.35 mi11072+48298+208298+201168878227822
Finish26.22 mi1.02 mi11098-268272+268272+261226481678167

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 36%
×21story building
+97ft-345ft

Overall

10305

Males

8251

M55-59

8251

5K→10K

3.1 - 6.2 mi

Top 36%
×5story building
+79ft-138ft

Overall

10177

Males

8249

M55-59

8249

10K→15K

6.2 - 9.3 mi

Top 36%
×3story building
+67ft-78ft

Overall

10305

Males

8251

M55-59

8251

15K→20K

9.3 - 12.4 mi

Top 41%
×5story building
+106ft-86ft

Overall

11505

Males

8735

M55-59

8735

20K→Half

12.4 - 13.1 mi

Top 41%
×2story building
+19ft-37ft

Overall

11628

Males

8838

M55-59

8838

Half→25K

13.1 - 15.5 mi

Top 44%
×4story building
+66ft-88ft

Overall

12569

Males

9095

M55-59

9095

25K→30K

15.5 - 18.6 mi

Top 46%
×9story building
+181ft-148ft

Overall

13046

Males

9159

M55-59

9159

30K→20M

18.6 - 20.0 mi

Top 43%
×5story building
+64ft-50ft

Overall

12139

Males

8581

M55-59

8581

20M→21M

20.0 - 21.0 mi

Top 45%
×8story building
+106ft-24ft

Overall

12679

Males

8675

M55-59

8675

21M→35K

21.0 - 21.8 mi

Top 55%
×7story building
+17ft-86ft

Overall

15482

Males

9913

M55-59

9913

35K→23M

21.8 - 23.0 mi

Top 36%
×5story building
+23ft-63ft

Overall

10102

Males

7287

M55-59

7287

23M→24M

23.0 - 24.0 mi

Top 36%
×6story building
+12ft-82ft

Overall

10175

Males

7256

M55-59

7256

24M→40K

24.0 - 24.9 mi

Top 37%
×1story
+6ft-20ft

Overall

10409

Males

7255

M55-59

7255

40K→25.2M

24.9 - 25.2 mi

Top 41%
×1story
+13ft-16ft

Overall

11688

Males

7822

M55-59

7822

25.2M→Finish

25.2 - 26.2 mi

Top 43%
×2story building
+22ft-21ft

Overall

12264

Males

8167

M55-59

8167

Passing Analysis

Category:
Athletes Passed
1175
Passed By
3302
Net Change
-2132
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#8966
5K → 10K72634-563#8966#9529
10K → 15K100339-240#9529#9769
15K → 20K85505-422#9769#10191
20K → Half1384-71#10191#10262
Half → 25K84439-355#10262#10617
25K → 30K113582-470#10617#11087
30K → 20M106133-27#11087#11114
20M → 21M77146-69#11114#11183
21M → 35K27183-156#11183#11339
35K → 23M15954+105#11339#11234
23M → 24M12834+94#11234#11140
24M → 40K10945+64#11140#11076
40K → 25.2M3733+4#11076#11072
25.2M → Finish6591-26#11072#11098
TOTALS11753302-2132

Passing Charts

Category:
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Passing Circle

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Position Flow

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Race Lanes

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Public Race Data

Boston Athletic Association

Boston Athletic Association

Mika Timing

Mika Timing