Justin Tsai

Bib: 14659MAge: 42

San Jose, CA

0:00
0:00
/ mi
Masters
Be the first to cheer!
Overall
#0 / 4103
Top 25%
Gender (Male)
#0 / 2158
Top 34%
Masters (Masters Men)
#0 / 709
Top 25%
Division (M40-44)
#0 / 203
Top 31%
Race Day Weather
54°/44°F
overcast clouds

⏱️ Race Timeline

Course Elevation
10277 ft
×22story building
774 ft climb · 557 ft descent
Ribbon color based on
FasterSteadySlower· vs. your average pace
Start
0:00
Race begins
2.2M
7:46/mi
17:05
→ flat
5.7M
9:41/mi
50:57
100780.1%
6.43M
12:48/mi
1:00:18
1473.8%
8.3M
7:36/mi
1:14:31
88530.3%
11.45M
9:40/mi
1:44:57
2933310.2%
FINISH· 13.11 mi
8:50/mi
1:59:36
61910.3%

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.

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
2.2M
2.20 mi06:55:2817:057:4617:05
7:46
-
5.7M
5.70 mi07:29:2050:578:5633:52
9:41
+1:55
6.43M
6.43 mi07:38:411:00:189:239:21
12:48
+3:07
8.3M
8.30 mi07:52:541:14:318:5914:13
7:36
-5:12
11.45M
11.45 mi08:23:201:44:579:1030:26
9:40
+2:04
FINISH
13.11 mi08:37:591:59:369:0714:39
8:50
-0:50

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

7:36 /mi

Average Pace

9:07 /mi

Slowest Pace

12:48 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

31:18

26% of race

Time at Steady Pace

1:18:57

66% of race

Time at Slower Pace

9:21

8% of race

Average Pace: 9:07 /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...
0mi3.3mi6.6mi9.8mi13.1mi
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
2.2M
2.20 mi06:55:2817:057:4617:05
7:46
#1116
5.7M
5.70 mi07:29:2050:578:5633:52
9:41
#1171
6.43M
6.43 mi07:38:411:00:189:239:21
12:48
#1159
8.3M
8.30 mi07:52:541:14:318:5914:13
7:36
#1155
11.45M
11.45 mi08:23:201:44:579:1030:26
9:40
#1141
FINISH
13.11 mi08:37:591:59:369:0714:39
8:50
#1023
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM40-44Seg. OverallSeg. MalesSeg. M40-44
2.2M2.20 mi2.20 mi1116788611116(Top 27%)788(Top 37%)61(Top 30%)
5.7M5.70 mi3.50 mi1171-55822-3465-41217(Top 30%)854(Top 40%)65(Top 32%)
6.43M6.43 mi0.73 mi1159+12816+6651156(Top 28%)835(Top 39%)63(Top 31%)
8.3M8.30 mi1.87 mi1155+4819-3651272(Top 31%)893(Top 41%)74(Top 36%)
11.45M11.45 mi3.15 mi1141+14812+768-31162(Top 28%)822(Top 38%)71(Top 35%)
FINISH13.11 mi1.66 mi1023+118740+7263+5460(Top 11%)356(Top 16%)25(Top 12%)

Segment Performance Analysis

Start → 2.2M

0.0 - 2.2 mi

Top 27%
~flat
+6ft-3ft

Overall

1116

Males

788

M40-44

61

2.2M→5.7M

2.2 - 5.7 mi

Top 30%
×5story building
+100ft-78ft

Overall

1217

Males

854

M40-44

66

5.7M→6.43M

5.7 - 6.4 mi

Top 28%
×12story building
+147ft-0ft

Overall

1156

Males

835

M40-44

63

6.43M→8.3M

6.4 - 8.3 mi

Top 31%
×4story building
+88ft-53ft

Overall

1272

Males

893

M40-44

74

8.3M→11.45M

8.3 - 11.4 mi

Top 28%
×20story building
+293ft-331ft

Overall

1162

Males

822

M40-44

71

11.45M→FINISH

11.4 - 13.1 mi

Top 11%
×7story building
+61ft-91ft

Overall

460

Males

356

M40-44

25

Passing Analysis

Category:
Athletes Passed
325*
Passed By
232
Net Change
+93
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 2.2M----#1116
2.2M5.7M92147-55#1116#1171
5.7M6.43M2715+12#1171#1159
6.43M8.3M2622+4#1159#1155
8.3M11.45M58*44+14#1155#1141
11.45MFINISH122*4+118#1141#1023
TOTALS325*232+93

* 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

Official Timing Data

The San Francisco Marathon

The San Francisco Marathon