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SF MARATHON 2026

Kar Shun Tsoi

Bib: 4904•M•Age: 53

Sunnyvale, CA

0:00
0:00
/ mi
Masters
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Overall
#0 / 7166
Gender (Male)
#0 / 5052
Masters (Masters Men)
#0 / 1321
Division (M50-54)
#0 / 245
Race Day Weather
59°/49°F
scattered clouds

⏱️ Race Timeline

Watch your race unfold from start to finish

Start
0:00:00
Race begins
2M
19:41
Rank: #3897
Start → 2M
19:41 | 9:50/mi
4M
39:54
Rank: #4032 (-135)
2M → 4M
20:13 | 10:07/mi
6M
1:00:38
Rank: #4095 (-63)
4M → 6M
20:44 | 10:22/mi
8M
1:21:19
Rank: #4263 (-168)
6M → 8M
20:41 | 10:20/mi
9.6M
1:38:52
Rank: #4239 (+24)
8M → 9.6M
17:33 | 10:58/mi
10M
1:41:52
Rank: #4252 (-13)
9.6M → 10M
3:00 | 7:31/mi
10.5M
1:48:46
Rank: #4208 (+44)
10M → 10.5M
6:54 | 13:48/mi
12M
2:06:34
Rank: #4528 (-320)
10.5M → 12M
17:48 | 11:52/mi
14M
2:33:11
Rank: #4887 (-359)
12M → 14M
26:37 | 13:18/mi
16M
2:53:12
Rank: #4833 (+54)
14M → 16M
20:01 | 10:00/mi
18M
3:24:20
Rank: #5263 (-430)
16M → 18M
31:08 | 15:34/mi
20M
3:51:12
Rank: #5407 (-144)
18M → 20M
26:52 | 13:26/mi
22M
4:17:09
Rank: #5509 (-102)
20M → 22M
25:57 | 12:58/mi
24M
4:47:03
Rank: #5609 (-100)
22M → 24M
29:54 | 14:57/mi
Finish· 26.22 mi
5:19:34
Rank: #5711 (-102)
24M → Finish
32:31 | 14:39/mi
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Half Splits

1st Half· via 14MFaster
Distance14.00 mi
Time2:33:11
Pace10:56 /mi
2nd Half
Distance12.22 mi
Time2:46:23
Pace13:37 /mi
📊Positive Split: 8.6% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
2M
2.00 mi05:40:1719:419:5019:41
9:50
-
4M
4.00 mi06:00:3039:549:5920:13
10:07
+0:17
6M
6.00 mi06:21:141:00:3810:0620:44
10:22
+0:15
8M
8.00 mi06:41:551:21:1910:1020:41
10:20
-0:02
9.6M
9.60 mi06:59:281:38:5210:1817:33
10:58
+0:38
10M
10.00 mi07:02:281:41:5210:113:00
7:31
-3:27
10.5M
10.50 mi07:09:221:48:4610:226:54
13:48
+6:17
12M
12.00 mi07:27:102:06:3410:3317:48
11:52
-1:56
14M
14.00 mi07:53:472:33:1110:5626:37
13:18
+1:26
16M
16.00 mi08:13:482:53:1210:4920:01
10:00
-3:18
18M
18.00 mi08:44:563:24:2011:2131:08
15:34
+5:34
20M
20.00 mi09:11:483:51:1211:3426:52
13:26
-2:08
22M
22.00 mi09:37:454:17:0911:4125:57
12:58
-0:28
24M
24.00 mi10:07:394:47:0311:5829:54
14:57
+1:59
Finish
26.22 mi10:40:105:19:3412:1232:31
14:39
-0:18

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

7:31 /mi

Average Pace

12:12 /mi

Slowest Pace

15:34 /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

1:44:20

33% of race

Time at Steady Pace

1:01:18

19% of race

Time at Slower Pace

2:33:56

48% of race

Average Pace: 12:11 /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
2M
2.00 mi05:40:1719:419:5019:41
9:50
#3897
4M
4.00 mi06:00:3039:549:5920:13
10:07
#4032
6M
6.00 mi06:21:141:00:3810:0620:44
10:22
#4095
8M
8.00 mi06:41:551:21:1910:1020:41
10:20
#4263
9.6M
9.60 mi06:59:281:38:5210:1817:33
10:58
#4239
10M
10.00 mi07:02:281:41:5210:113:00
7:31
#4252
10.5M
10.50 mi07:09:221:48:4610:226:54
13:48
#4208
12M
12.00 mi07:27:102:06:3410:3317:48
11:52
#4528
14M
14.00 mi07:53:472:33:1110:5626:37
13:18
#4887
16M
16.00 mi08:13:482:53:1210:4920:01
10:00
#4833
18M
18.00 mi08:44:563:24:2011:2131:08
15:34
#5263
20M
20.00 mi09:11:483:51:1211:3426:52
13:26
#5407
22M
22.00 mi09:37:454:17:0911:4125:57
12:58
#5509
24M
24.00 mi10:07:394:47:0311:5829:54
14:57
#5609
Finish
26.22 mi10:40:105:19:3412:1232:31
14:39
#5711
Faster pace
Steady pace
Slower pace
Garmin Challenge
Featured Segment

Garmin Challenge

The climb, presented by Garmin

Top 59%
Garmin Challenge
Course map with the garmin challenge highlighted
Garmin Challenge · 9.6–10.5 mi · © Mapbox © OpenStreetMap

9:54

Segment Time

11:00/mi

Pace

0.90 mi

Distance

Overall

4219

Men

3265

Division

141

See the full Garmin Challenge leaderboard

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM50-54Seg. OverallSeg. MalesSeg. M50-54
2M2.00 mi2.00 mi389730961365926(Top 83%)4343(Top 86%)184(Top 75%)
4M4.00 mi2.00 mi4032-1353201-105139-34208(Top 59%)3308(Top 65%)138(Top 56%)
6M6.00 mi2.00 mi4095-633230-29136+34393(Top 61%)3408(Top 67%)141(Top 58%)
8M8.00 mi2.00 mi4263-1683329-99139-34742(Top 66%)3634(Top 72%)152(Top 62%)
9.6M9.60 mi1.60 mi4239+243301+28137+24398(Top 61%)3385(Top 67%)149(Top 61%)
10M10.00 mi0.40 mi4252-133309-8136+15027(Top 70%)3781(Top 75%)171(Top 70%)
10.5M10.50 mi0.50 mi4208+443282+271364089(Top 57%)3179(Top 63%)135(Top 55%)
12M12.00 mi1.50 mi4528-3203482-200148-125926(Top 83%)4343(Top 86%)184(Top 75%)
14M14.00 mi2.00 mi4887-3593698-216160-126165(Top 86%)4467(Top 88%)204(Top 83%)
16M16.00 mi2.00 mi4833+543661+371604661(Top 65%)3508(Top 69%)160(Top 65%)
18M18.00 mi2.00 mi5263-4303912-251174-146676(Top 93%)4734(Top 94%)227(Top 93%)
20M20.00 mi2.00 mi5407-1443993-81175-15997(Top 84%)4276(Top 85%)203(Top 83%)
22M22.00 mi2.00 mi5509-1024050-57177-26005(Top 84%)4250(Top 84%)198(Top 81%)
24M24.00 mi2.00 mi5609-1004109-59182-56207(Top 87%)4392(Top 87%)210(Top 86%)
Finish26.22 mi2.22 mi5711-1024173-64187-56326(Top 88%)4464(Top 88%)210(Top 86%)

Segment Performance Analysis

10.5M→12M

0.0 - 2.0 mi

Top 83%
×1human
+6ft-11ft

Overall

5926

Males

4343

M50-54

187

2M→4M

2.0 - 4.0 mi

Top 59%
×4stories
+75ft-70ft

Overall

4208

Males

3308

M50-54

140

4M→6M

4.0 - 6.0 mi

Top 61%
×5stories
+71ft-18ft

Overall

4393

Males

3408

M50-54

143

6M→8M

6.0 - 8.0 mi

Top 66%
×9stories
+106ft-21ft

Overall

4742

Males

3634

M50-54

154

8M→9.6M

8.0 - 9.6 mi

Top 61%
×13stories
+117ft-177ft

Overall

4398

Males

3385

M50-54

151

9.6M→10M

9.6 - 10.0 mi

Top 70%
×1story
+17ft-12ft

Overall

5027

Males

3781

M50-54

174

10M→10.5M

10.0 - 10.5 mi

Top 57%
×9stories
+0ft-102ft

Overall

4089

Males

3179

M50-54

137

10.5M→12M

10.5 - 12.0 mi

Top 83%
×18stories
+304ft-125ft

Overall

5926

Males

4343

M50-54

187

12M→14M

12.0 - 14.0 mi

Top 86%
×9stories
+99ft-125ft

Overall

6165

Males

4467

M50-54

205

14M→16M

14.0 - 16.0 mi

Top 65%
×9stories
+124ft-78ft

Overall

4661

Males

3508

M50-54

160

16M→18M

16.0 - 18.0 mi

Top 93%
×8stories
+106ft-45ft

Overall

6676

Males

4734

M50-54

227

18M→20M

18.0 - 20.0 mi

Top 84%
×3stories
+52ft-26ft

Overall

5997

Males

4276

M50-54

203

20M→22M

20.0 - 22.0 mi

Top 84%
×21stories
+17ft-266ft

Overall

6005

Males

4250

M50-54

198

22M→24M

22.0 - 24.0 mi

Top 87%
×3stories
+70ft-85ft

Overall

6207

Males

4392

M50-54

210

24M→Finish

24.0 - 26.2 mi

Top 88%
~flat
+2ft-2ft

Overall

6326

Males

4464

M50-54

210

Passing Analysis

Category:
Athletes Passed
642*
Passed By
2456
Net Change
-1814
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 2M----#3897
2M → 4M90*225-135#3897#4032
4M → 6M93156-63#4032#4095
6M → 8M32*200-168#4095#4263
8M → 9.6M101*77+24#4263#4239
9.6M → 10M1528-13#4239#4252
10M → 10.5M6420+44#4252#4208
10.5M → 12M11331-320#4208#4528
12M → 14M10*369-359#4528#4887
14M → 16M129*75+54#4887#4833
16M → 18M11441-430#4833#5263
18M → 20M23*167-144#5263#5407
20M → 22M21*123-102#5407#5509
22M → 24M20*120-100#5509#5609
24M → Finish22*124-102#5609#5711
TOTALS642*2456-1814

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

📊

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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